TY  - JOUR
AU  - Milenković, Ivan
AU  - Keča, Nenad
AU  - Karadžić, Dragan
AU  - Radulović, Zlatan
AU  - Nowakowska, Justyna A.
AU  - Oszako, Tomasz
AU  - Sikora, Katarzyna
AU  - Corcobado, Tamara
AU  - Jung, Thomas
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/916
AB  - During a survey in three declining and three healthy poplar plantations in Serbia, six different Phytophthora species were obtained. Phytophthora plurivora was the most common, followed by P. pini, P. polonica, P. lacustris, P. cactorum, and P. gonapodyides. Pathogenicity of all isolated species to four-month and one-year-old cuttings of Populus hybrid clones I-214 and Pannonia, respectively, was tested using both a soil infestation and stem inoculation test. Isolates of P. polonica, P. x cambivora, P. cryptogea, and P. x serendipita from other host plants were included as a comparison. In the soil infestation test, the most aggressive species to clone I-214 were P. plurivora, P. x serendipita, and P. pini. On clone Pannonia, P. gonapodyides and P. pini were the most aggressive, both causing 100% mortality, followed by P. cactorum, P. x cambivora, and P. polonica. In the underbark inoculation test, the susceptibility of both poplar clones to the different Phytophthora species was largely similar, as in the soil infestation test, with the exception of P. polonica, which proved to be only weakly pathogenic to poplar bark. The most aggressive species to clone I-214 was P. pini, while on clone Pannonia, the longest lesions and highest disease incidence were caused by P. gonapodyides. Phytophthora cactorum and P. plurivora were pathogenic to both clones, whereas P. x cambivora showed only weak pathogenicity. The implications of these findings and possible pathways of dispersion of the pathogens are discussed.
T2  - Forests
T1  - Isolation and Pathogenicity of Phytophthora Species from Poplar Plantations in Serbia
IS  - 6
VL  - 9
DO  - 10.3390/f9060330
UR  - conv_1351
ER  - 

@article{
author = "Milenković, Ivan and Keča, Nenad and Karadžić, Dragan and Radulović, Zlatan and Nowakowska, Justyna A. and Oszako, Tomasz and Sikora, Katarzyna and Corcobado, Tamara and Jung, Thomas",
year = "2018",
abstract = "During a survey in three declining and three healthy poplar plantations in Serbia, six different Phytophthora species were obtained. Phytophthora plurivora was the most common, followed by P. pini, P. polonica, P. lacustris, P. cactorum, and P. gonapodyides. Pathogenicity of all isolated species to four-month and one-year-old cuttings of Populus hybrid clones I-214 and Pannonia, respectively, was tested using both a soil infestation and stem inoculation test. Isolates of P. polonica, P. x cambivora, P. cryptogea, and P. x serendipita from other host plants were included as a comparison. In the soil infestation test, the most aggressive species to clone I-214 were P. plurivora, P. x serendipita, and P. pini. On clone Pannonia, P. gonapodyides and P. pini were the most aggressive, both causing 100% mortality, followed by P. cactorum, P. x cambivora, and P. polonica. In the underbark inoculation test, the susceptibility of both poplar clones to the different Phytophthora species was largely similar, as in the soil infestation test, with the exception of P. polonica, which proved to be only weakly pathogenic to poplar bark. The most aggressive species to clone I-214 was P. pini, while on clone Pannonia, the longest lesions and highest disease incidence were caused by P. gonapodyides. Phytophthora cactorum and P. plurivora were pathogenic to both clones, whereas P. x cambivora showed only weak pathogenicity. The implications of these findings and possible pathways of dispersion of the pathogens are discussed.",
journal = "Forests",
title = "Isolation and Pathogenicity of Phytophthora Species from Poplar Plantations in Serbia",
number = "6",
volume = "9",
doi = "10.3390/f9060330",
url = "conv_1351"
}

Milenković, I., Keča, N., Karadžić, D., Radulović, Z., Nowakowska, J. A., Oszako, T., Sikora, K., Corcobado, T.,& Jung, T.. (2018). Isolation and Pathogenicity of Phytophthora Species from Poplar Plantations in Serbia. in Forests, 9(6).
https://doi.org/10.3390/f9060330
conv_1351

Milenković I, Keča N, Karadžić D, Radulović Z, Nowakowska JA, Oszako T, Sikora K, Corcobado T, Jung T. Isolation and Pathogenicity of Phytophthora Species from Poplar Plantations in Serbia. in Forests. 2018;9(6).
doi:10.3390/f9060330
conv_1351 .

Milenković, Ivan, Keča, Nenad, Karadžić, Dragan, Radulović, Zlatan, Nowakowska, Justyna A., Oszako, Tomasz, Sikora, Katarzyna, Corcobado, Tamara, Jung, Thomas, "Isolation and Pathogenicity of Phytophthora Species from Poplar Plantations in Serbia" in Forests, 9, no. 6 (2018),
https://doi.org/10.3390/f9060330 .,
conv_1351 .

TY  - JOUR
AU  - Milenković, Ivan
AU  - Keča, Nenad
AU  - Karadžić, Dragan
AU  - Nowakowska, Justyna A.
AU  - Oszako, Tomasz
AU  - Sikora, Katarzyna
AU  - Tkaczyk, Milosz
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/911
AB  - Common pathogenicity tests on 16-month-old ash plants were performed using isolates of Hymenoscyphus fraxineus and three different Phytophthora spp. isolated under declining ash trees in Wolica Nature reserve in Poland. There were no statistically significant differences among the different inoculation treatments and lesion lengths averaged 1.67 cm. After analyses of inoculated roots, five out of 10 root parameters showed statistically significant differences, and after a Dun can's Multiple Range test, significant differences were found with control plants while there were no differences among the treatments. The largest root loss was with the treatment inoculated with both H fraxineus and P. plurivora (HF + PP), and both fine and total root lengths were 2.30 and 2.27 times smaller, respectively, than the non-inoculated control. The earliest mortality of young ash plants was observed also with the I IF + PP treatment. Results showed high aggressiveness of IL fraxineus to young ash plants, with indications that root infections with Phytophthora spp. may contribute to greater damage, but more research is needed to clarify the interaction between H. fraxineus and Phytophthora spp. in ash dieback.
T2  - Forestry Chronicle
T1  - Interaction between Hymenoscyphus fraxineus and Phytophthora species on young Fraxinus excelsior seedlings
EP  - 139
IS  - 2
SP  - 135
VL  - 94
DO  - 10.5558/tfc2018-020
UR  - conv_1338
ER  - 

@article{
author = "Milenković, Ivan and Keča, Nenad and Karadžić, Dragan and Nowakowska, Justyna A. and Oszako, Tomasz and Sikora, Katarzyna and Tkaczyk, Milosz",
year = "2018",
abstract = "Common pathogenicity tests on 16-month-old ash plants were performed using isolates of Hymenoscyphus fraxineus and three different Phytophthora spp. isolated under declining ash trees in Wolica Nature reserve in Poland. There were no statistically significant differences among the different inoculation treatments and lesion lengths averaged 1.67 cm. After analyses of inoculated roots, five out of 10 root parameters showed statistically significant differences, and after a Dun can's Multiple Range test, significant differences were found with control plants while there were no differences among the treatments. The largest root loss was with the treatment inoculated with both H fraxineus and P. plurivora (HF + PP), and both fine and total root lengths were 2.30 and 2.27 times smaller, respectively, than the non-inoculated control. The earliest mortality of young ash plants was observed also with the I IF + PP treatment. Results showed high aggressiveness of IL fraxineus to young ash plants, with indications that root infections with Phytophthora spp. may contribute to greater damage, but more research is needed to clarify the interaction between H. fraxineus and Phytophthora spp. in ash dieback.",
journal = "Forestry Chronicle",
title = "Interaction between Hymenoscyphus fraxineus and Phytophthora species on young Fraxinus excelsior seedlings",
pages = "139-135",
number = "2",
volume = "94",
doi = "10.5558/tfc2018-020",
url = "conv_1338"
}

Milenković, I., Keča, N., Karadžić, D., Nowakowska, J. A., Oszako, T., Sikora, K.,& Tkaczyk, M.. (2018). Interaction between Hymenoscyphus fraxineus and Phytophthora species on young Fraxinus excelsior seedlings. in Forestry Chronicle, 94(2), 135-139.
https://doi.org/10.5558/tfc2018-020
conv_1338

Milenković I, Keča N, Karadžić D, Nowakowska JA, Oszako T, Sikora K, Tkaczyk M. Interaction between Hymenoscyphus fraxineus and Phytophthora species on young Fraxinus excelsior seedlings. in Forestry Chronicle. 2018;94(2):135-139.
doi:10.5558/tfc2018-020
conv_1338 .

Milenković, Ivan, Keča, Nenad, Karadžić, Dragan, Nowakowska, Justyna A., Oszako, Tomasz, Sikora, Katarzyna, Tkaczyk, Milosz, "Interaction between Hymenoscyphus fraxineus and Phytophthora species on young Fraxinus excelsior seedlings" in Forestry Chronicle, 94, no. 2 (2018):135-139,
https://doi.org/10.5558/tfc2018-020 .,
conv_1338 .

TY  - JOUR
AU  - Milenković, Ivan
AU  - Keča, Nenad
AU  - Karadžić, Dragan
AU  - Radulović, Zlatan
AU  - Tomsovsky, M.
AU  - Jung, T.
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/970
AB  - Cherry laurel (Prunus laurocerasus) is a native plant species in Serbian forests, but is also widely used for ornamental plantings. Following two extremely wet summers in 2014 and 2015, in spring and summer of 2016 and 2017, numerous cherry laurel plants with symptoms indicative for Phytophthora diseases, like wilting and chlorosis of leaves, dieback and bleeding bark necroses, were recorded in a park in Belgrade and in two ornamental nurseries in central Serbia. From necrotic bark samples and rhizosphere soil, self-sterile Phytophthora isolates with woolly colonies were obtained. Due to the production of ellipsoid and elongated, non-papillate sporangia in water and of ornamented oogonia with two-celled antheridia in mating tests with tester strains of both Phytophthora x cambivora and P.cryptogea, these isolates were identified as P.xcambivora which was confirmed by ITS sequence analysis. Pathogenicity of P.xcambivora from cherry laurel (PCCL) was tested by inoculating one-year-old seedlings of cherry laurel under the bark. P.xcambivora from European beech (PCB), and isolates of P.cactorum (CAC), P.cryptogea (CRY), P.plurivora (PLU) and P.xserendipita (SER) were included as comparison. Three and a half months after inoculation, nine of the twelve plants in PCB, three in PCCL and CAC and two in PLU declined with longitudinal necroses and chlorosis, wilting and premature shedding of leaves. These results demonstrate the ability of P.xcambivora to infect and cause decline of cherry laurel plants. The particularly high aggressiveness of the P.xcambivora isolate from beech shows that this pathogen poses a serious risk to cherry laurel in the rare natural communities of cherry laurel and beech in Serbia.
T2  - Forest Pathology
T1  - Occurrence and pathogenicity of Phytophthora x cambivora on Prunus laurocerasus in Serbia
IS  - 4
VL  - 48
DO  - 10.1111/efp.12436
UR  - conv_1361
ER  - 

@article{
author = "Milenković, Ivan and Keča, Nenad and Karadžić, Dragan and Radulović, Zlatan and Tomsovsky, M. and Jung, T.",
year = "2018",
abstract = "Cherry laurel (Prunus laurocerasus) is a native plant species in Serbian forests, but is also widely used for ornamental plantings. Following two extremely wet summers in 2014 and 2015, in spring and summer of 2016 and 2017, numerous cherry laurel plants with symptoms indicative for Phytophthora diseases, like wilting and chlorosis of leaves, dieback and bleeding bark necroses, were recorded in a park in Belgrade and in two ornamental nurseries in central Serbia. From necrotic bark samples and rhizosphere soil, self-sterile Phytophthora isolates with woolly colonies were obtained. Due to the production of ellipsoid and elongated, non-papillate sporangia in water and of ornamented oogonia with two-celled antheridia in mating tests with tester strains of both Phytophthora x cambivora and P.cryptogea, these isolates were identified as P.xcambivora which was confirmed by ITS sequence analysis. Pathogenicity of P.xcambivora from cherry laurel (PCCL) was tested by inoculating one-year-old seedlings of cherry laurel under the bark. P.xcambivora from European beech (PCB), and isolates of P.cactorum (CAC), P.cryptogea (CRY), P.plurivora (PLU) and P.xserendipita (SER) were included as comparison. Three and a half months after inoculation, nine of the twelve plants in PCB, three in PCCL and CAC and two in PLU declined with longitudinal necroses and chlorosis, wilting and premature shedding of leaves. These results demonstrate the ability of P.xcambivora to infect and cause decline of cherry laurel plants. The particularly high aggressiveness of the P.xcambivora isolate from beech shows that this pathogen poses a serious risk to cherry laurel in the rare natural communities of cherry laurel and beech in Serbia.",
journal = "Forest Pathology",
title = "Occurrence and pathogenicity of Phytophthora x cambivora on Prunus laurocerasus in Serbia",
number = "4",
volume = "48",
doi = "10.1111/efp.12436",
url = "conv_1361"
}

Milenković, I., Keča, N., Karadžić, D., Radulović, Z., Tomsovsky, M.,& Jung, T.. (2018). Occurrence and pathogenicity of Phytophthora x cambivora on Prunus laurocerasus in Serbia. in Forest Pathology, 48(4).
https://doi.org/10.1111/efp.12436
conv_1361

Milenković I, Keča N, Karadžić D, Radulović Z, Tomsovsky M, Jung T. Occurrence and pathogenicity of Phytophthora x cambivora on Prunus laurocerasus in Serbia. in Forest Pathology. 2018;48(4).
doi:10.1111/efp.12436
conv_1361 .

Milenković, Ivan, Keča, Nenad, Karadžić, Dragan, Radulović, Zlatan, Tomsovsky, M., Jung, T., "Occurrence and pathogenicity of Phytophthora x cambivora on Prunus laurocerasus in Serbia" in Forest Pathology, 48, no. 4 (2018),
https://doi.org/10.1111/efp.12436 .,
conv_1361 .

TY  - CONF
AU  - Keča, Ljiljana
AU  - Keča, Nenad
AU  - Borota, Dragan
AU  - Marčeta, Milica
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/901
AB  - The majority of non-native forest species, which have been brought to Europe (such as Grand fir, Black locust, Douglas fir, Red oak, Sitka spruce, Red ash, Maple ash) are species with extensive natural distribution ranges. They come from different climatic environments. We analyzed the prospects and challenges for non-native tree species in Serbia according to elements of ecology, silviculture and climate change. We have used the strengths, weaknesses, opportunities, and threats approach in combination with analytic hierarchy process. We used preference data from opinion leaders in NNTSs in Serbia who have an intensive knowledge and experience in this area. Results reveal that strengths and treats in all three cases are dominant strategy in NNTSs. The analysis is based on data collected from a survey made throughout Serbia between December 2015 and June 2016. There were 28 respondents dealing with NNTSs in Serbia. Within-group analysis of preferences shows that faster adaptation to changing ecological conditions was the most important strength of NNTSs ecological characteristics with a priority score of 0.075. With a priority score of 0.1 replacements of native species of decreasing health condition was shown to be the major opportunity factor. The most serious weakness, with a factor priority score of 0.05, was invasiveness and possible disappearance of native tree species. The greatest problems of NNTSs in Serbia are: lack of experience in the silviculture of NNTS, non-visibility of the state to NNTSs, and degradation of tree physiological status and susceptibility to pathogens. Strengths are: faster adaptation to changing ecological conditions, good adaptive to local climate and biodiversity richness. In this study, we attempt to assess the effect of ecologic, silviculture and climate changes on NNTSs adoption decisions. We use the strengths, weaknesses, opportunities, and threats (SWOT) approach in combination with analytic hierarchy process (AHP) to achieve this task.
C3  - Soil and Water Resources Protection in the Changing Environment
T1  - Prospectives of non-native tree species in Serbia
EP  - 160
SP  - 150
VL  - 45
UR  - conv_1412
ER  - 

@conference{
author = "Keča, Ljiljana and Keča, Nenad and Borota, Dragan and Marčeta, Milica",
year = "2018",
abstract = "The majority of non-native forest species, which have been brought to Europe (such as Grand fir, Black locust, Douglas fir, Red oak, Sitka spruce, Red ash, Maple ash) are species with extensive natural distribution ranges. They come from different climatic environments. We analyzed the prospects and challenges for non-native tree species in Serbia according to elements of ecology, silviculture and climate change. We have used the strengths, weaknesses, opportunities, and threats approach in combination with analytic hierarchy process. We used preference data from opinion leaders in NNTSs in Serbia who have an intensive knowledge and experience in this area. Results reveal that strengths and treats in all three cases are dominant strategy in NNTSs. The analysis is based on data collected from a survey made throughout Serbia between December 2015 and June 2016. There were 28 respondents dealing with NNTSs in Serbia. Within-group analysis of preferences shows that faster adaptation to changing ecological conditions was the most important strength of NNTSs ecological characteristics with a priority score of 0.075. With a priority score of 0.1 replacements of native species of decreasing health condition was shown to be the major opportunity factor. The most serious weakness, with a factor priority score of 0.05, was invasiveness and possible disappearance of native tree species. The greatest problems of NNTSs in Serbia are: lack of experience in the silviculture of NNTS, non-visibility of the state to NNTSs, and degradation of tree physiological status and susceptibility to pathogens. Strengths are: faster adaptation to changing ecological conditions, good adaptive to local climate and biodiversity richness. In this study, we attempt to assess the effect of ecologic, silviculture and climate changes on NNTSs adoption decisions. We use the strengths, weaknesses, opportunities, and threats (SWOT) approach in combination with analytic hierarchy process (AHP) to achieve this task.",
journal = "Soil and Water Resources Protection in the Changing Environment",
title = "Prospectives of non-native tree species in Serbia",
pages = "160-150",
volume = "45",
url = "conv_1412"
}

Keča, L., Keča, N., Borota, D.,& Marčeta, M.. (2018). Prospectives of non-native tree species in Serbia. in Soil and Water Resources Protection in the Changing Environment, 45, 150-160.
conv_1412

Keča L, Keča N, Borota D, Marčeta M. Prospectives of non-native tree species in Serbia. in Soil and Water Resources Protection in the Changing Environment. 2018;45:150-160.
conv_1412 .

Keča, Ljiljana, Keča, Nenad, Borota, Dragan, Marčeta, Milica, "Prospectives of non-native tree species in Serbia" in Soil and Water Resources Protection in the Changing Environment, 45 (2018):150-160,
conv_1412 .

TY  - JOUR
AU  - Jung, T.
AU  - Orlikowski, L.
AU  - Henricot, B.
AU  - Abad-Campos, P.
AU  - Aday, A. G.
AU  - Aguin Casal, O.
AU  - Bakonyi, J.
AU  - Cacciola, S. O.
AU  - Cech, T.
AU  - Chavarriaga, D.
AU  - Corcobado, Tamara
AU  - Cravador, A.
AU  - Decourcelle, T.
AU  - Denton, G.
AU  - Diamandis, S.
AU  - Dogmus-Lehtijaervi, H. T.
AU  - Franceschini, A.
AU  - Ginetti, B.
AU  - Green, Samantha
AU  - Glavendekić, Milka
AU  - Hantula, J.
AU  - Hartmann, G.
AU  - Herrero, M.
AU  - Ivić, D.
AU  - Horta Jung, M.
AU  - Lilja, A.
AU  - Keča, Nenad
AU  - Kramarets, V.
AU  - Lyubenova, A.
AU  - Machado, H.
AU  - Magnano di San Lio, G.
AU  - Mansilla Vazquez, P. J.
AU  - Marcais, B.
AU  - Matsiakh, I.
AU  - Milenković, Ivan
AU  - Moricca, S.
AU  - Nagy, Zoltan
AU  - Nechwatal, J.
AU  - Olsson, C.
AU  - Oszako, Tomasz
AU  - Pane, A.
AU  - Paplomatas, E. J.
AU  - Pintos Varela, C.
AU  - Prospero, Simone
AU  - Rial Martinez, C.
AU  - Rigling, D.
AU  - Robin, Cecile
AU  - Rytkoenen, A.
AU  - Sanchez, M. E.
AU  - Sanz Ros, A. V.
AU  - Scanu, Bruno
AU  - Schlenzig, A.
AU  - Schumacher, J.
AU  - Slavov, S.
AU  - Solla, Alejandro
AU  - Sousa, E.
AU  - Stenlid, J.
AU  - Talgo, Venche
AU  - Tomić, Z.
AU  - Tsopelas, Panaghiotis
AU  - Vannini, A.
AU  - Vettraino, Anna Maria
AU  - Wenneker, M.
AU  - Woodward, S.
AU  - Perez-Sierra, Ana
PY  - 2016
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/723
AB  - An analysis of incidence of Phytophthora spp. in 732 European nurseries producing forest transplants, larger specimen trees, landscape plants and ornamentals, plus 2525 areas in which trees and shrubs were planted, is presented based on work conducted by 38 research groups in 23 European countries between 1972 and 2013. Forty-nine Phytophthora taxa were recorded in 670 nurseries (91.5%); within these nurseries, 1614 of 1992 nursery stands (81.0%) were infested, although most affected plants appeared healthy. In forest and landscape plantings, 56 Phytophthora taxa were recovered from 1667 of 2525 tested sites (66.0%). Affected plants frequently showed symptoms such as crown thinning, chlorosis and dieback caused by extensive fine root losses and/or collar rot. Many well-known highly damaging host-Phytophthora combinations were frequently detected but 297 and 407 new Phytophthora-host associations were also observed in nurseries and plantings, respectively. On average, 1.3 Phytophthora species/taxa per infested nursery stand and planting site were isolated. At least 47 of the 68 Phytophthora species/taxa detected in nurseries and plantings were exotic species several of which are considered well established in both nurseries and plantings in Europe. Seven known Phytophthora species/taxa were found for the first time in Europe, while 10 taxa had not been previously recorded from nurseries or plantings; in addition, 5 taxa were first detections on woody plant species. Seven Phytophthora taxa were previously unknown to science. The reasons for these failures of plant biosecurity in Europe, implications for forest and semi-natural ecosystems and possible ways to improve biosecurity are discussed.
T2  - Forest Pathology
T1  - Widespread Phytophthora infestations in European nurseries put forest, semi-natural and horticultural ecosystems at high risk of Phytophthora diseases
EP  - 163
IS  - 2
SP  - 134
VL  - 46
DO  - 10.1111/efp.12239
UR  - conv_1209
ER  - 

@article{
author = "Jung, T. and Orlikowski, L. and Henricot, B. and Abad-Campos, P. and Aday, A. G. and Aguin Casal, O. and Bakonyi, J. and Cacciola, S. O. and Cech, T. and Chavarriaga, D. and Corcobado, Tamara and Cravador, A. and Decourcelle, T. and Denton, G. and Diamandis, S. and Dogmus-Lehtijaervi, H. T. and Franceschini, A. and Ginetti, B. and Green, Samantha and Glavendekić, Milka and Hantula, J. and Hartmann, G. and Herrero, M. and Ivić, D. and Horta Jung, M. and Lilja, A. and Keča, Nenad and Kramarets, V. and Lyubenova, A. and Machado, H. and Magnano di San Lio, G. and Mansilla Vazquez, P. J. and Marcais, B. and Matsiakh, I. and Milenković, Ivan and Moricca, S. and Nagy, Zoltan and Nechwatal, J. and Olsson, C. and Oszako, Tomasz and Pane, A. and Paplomatas, E. J. and Pintos Varela, C. and Prospero, Simone and Rial Martinez, C. and Rigling, D. and Robin, Cecile and Rytkoenen, A. and Sanchez, M. E. and Sanz Ros, A. V. and Scanu, Bruno and Schlenzig, A. and Schumacher, J. and Slavov, S. and Solla, Alejandro and Sousa, E. and Stenlid, J. and Talgo, Venche and Tomić, Z. and Tsopelas, Panaghiotis and Vannini, A. and Vettraino, Anna Maria and Wenneker, M. and Woodward, S. and Perez-Sierra, Ana",
year = "2016",
abstract = "An analysis of incidence of Phytophthora spp. in 732 European nurseries producing forest transplants, larger specimen trees, landscape plants and ornamentals, plus 2525 areas in which trees and shrubs were planted, is presented based on work conducted by 38 research groups in 23 European countries between 1972 and 2013. Forty-nine Phytophthora taxa were recorded in 670 nurseries (91.5%); within these nurseries, 1614 of 1992 nursery stands (81.0%) were infested, although most affected plants appeared healthy. In forest and landscape plantings, 56 Phytophthora taxa were recovered from 1667 of 2525 tested sites (66.0%). Affected plants frequently showed symptoms such as crown thinning, chlorosis and dieback caused by extensive fine root losses and/or collar rot. Many well-known highly damaging host-Phytophthora combinations were frequently detected but 297 and 407 new Phytophthora-host associations were also observed in nurseries and plantings, respectively. On average, 1.3 Phytophthora species/taxa per infested nursery stand and planting site were isolated. At least 47 of the 68 Phytophthora species/taxa detected in nurseries and plantings were exotic species several of which are considered well established in both nurseries and plantings in Europe. Seven known Phytophthora species/taxa were found for the first time in Europe, while 10 taxa had not been previously recorded from nurseries or plantings; in addition, 5 taxa were first detections on woody plant species. Seven Phytophthora taxa were previously unknown to science. The reasons for these failures of plant biosecurity in Europe, implications for forest and semi-natural ecosystems and possible ways to improve biosecurity are discussed.",
journal = "Forest Pathology",
title = "Widespread Phytophthora infestations in European nurseries put forest, semi-natural and horticultural ecosystems at high risk of Phytophthora diseases",
pages = "163-134",
number = "2",
volume = "46",
doi = "10.1111/efp.12239",
url = "conv_1209"
}

Jung, T., Orlikowski, L., Henricot, B., Abad-Campos, P., Aday, A. G., Aguin Casal, O., Bakonyi, J., Cacciola, S. O., Cech, T., Chavarriaga, D., Corcobado, T., Cravador, A., Decourcelle, T., Denton, G., Diamandis, S., Dogmus-Lehtijaervi, H. T., Franceschini, A., Ginetti, B., Green, S., Glavendekić, M., Hantula, J., Hartmann, G., Herrero, M., Ivić, D., Horta Jung, M., Lilja, A., Keča, N., Kramarets, V., Lyubenova, A., Machado, H., Magnano di San Lio, G., Mansilla Vazquez, P. J., Marcais, B., Matsiakh, I., Milenković, I., Moricca, S., Nagy, Z., Nechwatal, J., Olsson, C., Oszako, T., Pane, A., Paplomatas, E. J., Pintos Varela, C., Prospero, S., Rial Martinez, C., Rigling, D., Robin, C., Rytkoenen, A., Sanchez, M. E., Sanz Ros, A. V., Scanu, B., Schlenzig, A., Schumacher, J., Slavov, S., Solla, A., Sousa, E., Stenlid, J., Talgo, V., Tomić, Z., Tsopelas, P., Vannini, A., Vettraino, A. M., Wenneker, M., Woodward, S.,& Perez-Sierra, A.. (2016). Widespread Phytophthora infestations in European nurseries put forest, semi-natural and horticultural ecosystems at high risk of Phytophthora diseases. in Forest Pathology, 46(2), 134-163.
https://doi.org/10.1111/efp.12239
conv_1209

Jung T, Orlikowski L, Henricot B, Abad-Campos P, Aday AG, Aguin Casal O, Bakonyi J, Cacciola SO, Cech T, Chavarriaga D, Corcobado T, Cravador A, Decourcelle T, Denton G, Diamandis S, Dogmus-Lehtijaervi HT, Franceschini A, Ginetti B, Green S, Glavendekić M, Hantula J, Hartmann G, Herrero M, Ivić D, Horta Jung M, Lilja A, Keča N, Kramarets V, Lyubenova A, Machado H, Magnano di San Lio G, Mansilla Vazquez PJ, Marcais B, Matsiakh I, Milenković I, Moricca S, Nagy Z, Nechwatal J, Olsson C, Oszako T, Pane A, Paplomatas EJ, Pintos Varela C, Prospero S, Rial Martinez C, Rigling D, Robin C, Rytkoenen A, Sanchez ME, Sanz Ros AV, Scanu B, Schlenzig A, Schumacher J, Slavov S, Solla A, Sousa E, Stenlid J, Talgo V, Tomić Z, Tsopelas P, Vannini A, Vettraino AM, Wenneker M, Woodward S, Perez-Sierra A. Widespread Phytophthora infestations in European nurseries put forest, semi-natural and horticultural ecosystems at high risk of Phytophthora diseases. in Forest Pathology. 2016;46(2):134-163.
doi:10.1111/efp.12239
conv_1209 .

Jung, T., Orlikowski, L., Henricot, B., Abad-Campos, P., Aday, A. G., Aguin Casal, O., Bakonyi, J., Cacciola, S. O., Cech, T., Chavarriaga, D., Corcobado, Tamara, Cravador, A., Decourcelle, T., Denton, G., Diamandis, S., Dogmus-Lehtijaervi, H. T., Franceschini, A., Ginetti, B., Green, Samantha, Glavendekić, Milka, Hantula, J., Hartmann, G., Herrero, M., Ivić, D., Horta Jung, M., Lilja, A., Keča, Nenad, Kramarets, V., Lyubenova, A., Machado, H., Magnano di San Lio, G., Mansilla Vazquez, P. J., Marcais, B., Matsiakh, I., Milenković, Ivan, Moricca, S., Nagy, Zoltan, Nechwatal, J., Olsson, C., Oszako, Tomasz, Pane, A., Paplomatas, E. J., Pintos Varela, C., Prospero, Simone, Rial Martinez, C., Rigling, D., Robin, Cecile, Rytkoenen, A., Sanchez, M. E., Sanz Ros, A. V., Scanu, Bruno, Schlenzig, A., Schumacher, J., Slavov, S., Solla, Alejandro, Sousa, E., Stenlid, J., Talgo, Venche, Tomić, Z., Tsopelas, Panaghiotis, Vannini, A., Vettraino, Anna Maria, Wenneker, M., Woodward, S., Perez-Sierra, Ana, "Widespread Phytophthora infestations in European nurseries put forest, semi-natural and horticultural ecosystems at high risk of Phytophthora diseases" in Forest Pathology, 46, no. 2 (2016):134-163,
https://doi.org/10.1111/efp.12239 .,
conv_1209 .

TY  - JOUR
AU  - Keča, Nenad
AU  - Milenković, Ivan
AU  - Keča, Ljiljana
PY  - 2015
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/714
AB  - Poplars are fast-growing broadleaved tree species inhabiting river banks and sites with accessible water supplies. Vegetative propagation makes them suitable for establishing highly productive plantations along big rivers and in flooded plains. The production of large quantities of biomass provides a good substrate for various organisms. The aim of this study was to identify fungal species occurring in the poplar plantations in Serbia and to determine their frequency and role in decomposition of tree parts. Fifty species belonging to the divisions Ascomycota, Basidimycota and Deuteromycota as well as two species from Oomycota (the genus Phytophthora) were reported. Bark was the substrate for 27 species, 14 species were found on leaves and 9 species were wood-decaying fungi.
PB  - Institute of Agricultural and Food Information
T2  - Journal of Forest Science
T1  - Mycological complex of poplars in Serbia
EP  - 174
IS  - 4
SP  - 169
VL  - 61
DO  - 10.17221/13/2014-JFS
UR  - conv_2180
ER  - 

@article{
author = "Keča, Nenad and Milenković, Ivan and Keča, Ljiljana",
year = "2015",
abstract = "Poplars are fast-growing broadleaved tree species inhabiting river banks and sites with accessible water supplies. Vegetative propagation makes them suitable for establishing highly productive plantations along big rivers and in flooded plains. The production of large quantities of biomass provides a good substrate for various organisms. The aim of this study was to identify fungal species occurring in the poplar plantations in Serbia and to determine their frequency and role in decomposition of tree parts. Fifty species belonging to the divisions Ascomycota, Basidimycota and Deuteromycota as well as two species from Oomycota (the genus Phytophthora) were reported. Bark was the substrate for 27 species, 14 species were found on leaves and 9 species were wood-decaying fungi.",
publisher = "Institute of Agricultural and Food Information",
journal = "Journal of Forest Science",
title = "Mycological complex of poplars in Serbia",
pages = "174-169",
number = "4",
volume = "61",
doi = "10.17221/13/2014-JFS",
url = "conv_2180"
}

Keča, N., Milenković, I.,& Keča, L.. (2015). Mycological complex of poplars in Serbia. in Journal of Forest Science
Institute of Agricultural and Food Information., 61(4), 169-174.
https://doi.org/10.17221/13/2014-JFS
conv_2180

Keča N, Milenković I, Keča L. Mycological complex of poplars in Serbia. in Journal of Forest Science. 2015;61(4):169-174.
doi:10.17221/13/2014-JFS
conv_2180 .

Keča, Nenad, Milenković, Ivan, Keča, Ljiljana, "Mycological complex of poplars in Serbia" in Journal of Forest Science, 61, no. 4 (2015):169-174,
https://doi.org/10.17221/13/2014-JFS .,
conv_2180 .

TY  - JOUR
AU  - Fodor, E.
AU  - Haruta, O.
AU  - Milenković, Ivan
AU  - Lyubenova, A.
AU  - Tziros, G.
AU  - Keča, Nenad
AU  - Slavov, S.
AU  - Diamandis, S.
AU  - Kostov, K.
PY  - 2015
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/691
AB  - Eigenshape analysis and Relative Warp Analysis were employed in the study of the shape of highly variable sporangia of Phytophthora plurivora, a widespread oomycetous pathogen isolated from woody species, in several South-East European countries: Bulgaria, Greece, Serbia and Romania. The aim of the study was to estimate whether shape variables permitted the quantitative assessment of sporangial shape variability in P. plurivora and also, the discrimination between species based solely on sporangial shape, P. cactorum being selected for comparisons. Both Eigenshape and Relative Warp Analyses showed that the most variable sporangial areas were apical and basal regions. More than half of the shape variation was accounted for the first 2 ES axes (66.75%) and first two RW axes (61.74%). ESA performed better in terms of species shape (P. plurivora and P. cactorum) separation. Canonical Variate Analysis/MANOVA and Discriminant Analysis indicated the clear discrimination between species and between isolates of P. plurivora. Mean or consensus shape performed as the best shape descriptor of sporangia. High dimensional variation considered in terms of centroid size corroborated with shape variation spanning from symmetrical consensus shape to conspicuously asymmetric shapes.
PB  - Editura Silvica
T2  - Annals of Forest Research
T1  - Geometric morphometry of Phytophihora plurivora sporangia
EP  - 294
IS  - 2
SP  - 275
VL  - 58
DO  - 10.15287/afr.2015.411
UR  - conv_2125
ER  - 

@article{
author = "Fodor, E. and Haruta, O. and Milenković, Ivan and Lyubenova, A. and Tziros, G. and Keča, Nenad and Slavov, S. and Diamandis, S. and Kostov, K.",
year = "2015",
abstract = "Eigenshape analysis and Relative Warp Analysis were employed in the study of the shape of highly variable sporangia of Phytophthora plurivora, a widespread oomycetous pathogen isolated from woody species, in several South-East European countries: Bulgaria, Greece, Serbia and Romania. The aim of the study was to estimate whether shape variables permitted the quantitative assessment of sporangial shape variability in P. plurivora and also, the discrimination between species based solely on sporangial shape, P. cactorum being selected for comparisons. Both Eigenshape and Relative Warp Analyses showed that the most variable sporangial areas were apical and basal regions. More than half of the shape variation was accounted for the first 2 ES axes (66.75%) and first two RW axes (61.74%). ESA performed better in terms of species shape (P. plurivora and P. cactorum) separation. Canonical Variate Analysis/MANOVA and Discriminant Analysis indicated the clear discrimination between species and between isolates of P. plurivora. Mean or consensus shape performed as the best shape descriptor of sporangia. High dimensional variation considered in terms of centroid size corroborated with shape variation spanning from symmetrical consensus shape to conspicuously asymmetric shapes.",
publisher = "Editura Silvica",
journal = "Annals of Forest Research",
title = "Geometric morphometry of Phytophihora plurivora sporangia",
pages = "294-275",
number = "2",
volume = "58",
doi = "10.15287/afr.2015.411",
url = "conv_2125"
}

Fodor, E., Haruta, O., Milenković, I., Lyubenova, A., Tziros, G., Keča, N., Slavov, S., Diamandis, S.,& Kostov, K.. (2015). Geometric morphometry of Phytophihora plurivora sporangia. in Annals of Forest Research
Editura Silvica., 58(2), 275-294.
https://doi.org/10.15287/afr.2015.411
conv_2125

Fodor E, Haruta O, Milenković I, Lyubenova A, Tziros G, Keča N, Slavov S, Diamandis S, Kostov K. Geometric morphometry of Phytophihora plurivora sporangia. in Annals of Forest Research. 2015;58(2):275-294.
doi:10.15287/afr.2015.411
conv_2125 .

Fodor, E., Haruta, O., Milenković, Ivan, Lyubenova, A., Tziros, G., Keča, Nenad, Slavov, S., Diamandis, S., Kostov, K., "Geometric morphometry of Phytophihora plurivora sporangia" in Annals of Forest Research, 58, no. 2 (2015):275-294,
https://doi.org/10.15287/afr.2015.411 .,
conv_2125 .

TY  - JOUR
AU  - Keča, Ljiljana
AU  - Mitrović, Marija
AU  - Marčeta, Milica
AU  - Keča, Nenad
AU  - Pupovac, Ljubomir
PY  - 2015
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/678
AB  - Jedan od glavnih zadataka istraživanja marketinga jeste ocena tržišnog potencijala. Cilj istraživanja je da se u okviru analiziranih preduzeća unutar Jablaničkog okruga utvrdi dinamika otkupa i plasmana drvnih i nedrvnih šumskih proizvoda (NDŠP). Svrha istraživanja je da se ispitaju mogućnosti za razvoj malih i srednjih preduzeća (MSP) usmerenih ka održivom korišćenju šumskih proizvoda na području Jablaničkog okruga. Predmet istraživanja su: količine koje otkupljuju i plasiraju analizirana preduzeća, kao i cene po kojima se proizvodi realizuju, sa posebnim osvrtom na komercijalno značajne gljive. Istraživanjem sprovedenim na teritoriji Jablaničkog okruga, obuhvaćeno je 5 preduzeća koja se bave otkupom, preradom i plasmanom NDŠP i ŠG 'Šuma' Leskovac (ŠGŠL). Otkup šumskog voća i lekovitog bilja u sirovom stanju od 2006-2013. godine imao je rastući trend (+17,8%) u analiziranom periodu. Prosečna godišnja stopa rasta prodaje (PGSR) lekovitog bilja iznosila je 3,4%, a gljiva 30,6%. PGSR izvoza NDŠP je +32,6%. Plasman sortimenata bukve K klase beleži PGSR otkupa od oko +12,7%. U 2013. godini utvrđeno je da su NDŠP sa najvećom tržišnom vrednošću: borovnica, suvi vrganj i lisičarka. Njihov ukupan bruto prihod na domaćem tržištu je u 2013. godini 82.350.000 RSD. Ukupan bruto prihod na domaćem tržištu ŠGŠL od analiziranih sortimenata bukve je 86.963.022,49 RSD.
AB  - One of the main tasks of marketing research is the assessment of market potential. The aim of this research was to analyze the dynamics of selling and buying of wood and nonwood forest products (NWFPs) within the analyzed enterprises in the Jablanica District. The purpose of this research was to examine the possibilities for the development of small and medium-sized enterprises (SMEs) directed towards a sustainable use of forest products in the area of the Jablanica District. The subject of this research is: purchased and placed quantities in the analyzed enterprises, as well as the prices that were realized for the products, with special emphasis on commercially important mushrooms. The research was conducted in the territory of Jablanica and it included five enterprises engaged in the purchasing, processing and sale of NWFPs and the Forest Estate (FE) 'Forest' Leskovac. The purchase of raw forest fruits and herbs had a growing trend (+ 17.8%) in the 2006-2013 period. The average annual growth rate (AAGR) of sales was 3.4% for medicinal plants and 30.6% for mushrooms. The AAGR of NWFPs export was + 32.6%. The placement of beech wood assortments (K class) recorded a purchase AAGR of app. + 12.7%. In 2013, it was found that the NWFPs with the highest market value were: blueberry, dried boletus and chanterelle. In 2013, their total gross revenue in the domestic market amounted to 82.3 million RSD, whereas the total gross revenue of the analyzed beech wood assortments was 87 million RSD.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Ocena tržišnog potencijala šumskih proizvoda kao osnova za razvoj sektora šumarstva u Jablaničkom okrugu
T1  - Assessment of forest products market potential as a basis for forest sector development in the Jablanica district
EP  - 62
IS  - 111
SP  - 45
DO  - 10.2298/GSF1511045K
UR  - conv_424
ER  - 

@article{
author = "Keča, Ljiljana and Mitrović, Marija and Marčeta, Milica and Keča, Nenad and Pupovac, Ljubomir",
year = "2015",
abstract = "Jedan od glavnih zadataka istraživanja marketinga jeste ocena tržišnog potencijala. Cilj istraživanja je da se u okviru analiziranih preduzeća unutar Jablaničkog okruga utvrdi dinamika otkupa i plasmana drvnih i nedrvnih šumskih proizvoda (NDŠP). Svrha istraživanja je da se ispitaju mogućnosti za razvoj malih i srednjih preduzeća (MSP) usmerenih ka održivom korišćenju šumskih proizvoda na području Jablaničkog okruga. Predmet istraživanja su: količine koje otkupljuju i plasiraju analizirana preduzeća, kao i cene po kojima se proizvodi realizuju, sa posebnim osvrtom na komercijalno značajne gljive. Istraživanjem sprovedenim na teritoriji Jablaničkog okruga, obuhvaćeno je 5 preduzeća koja se bave otkupom, preradom i plasmanom NDŠP i ŠG 'Šuma' Leskovac (ŠGŠL). Otkup šumskog voća i lekovitog bilja u sirovom stanju od 2006-2013. godine imao je rastući trend (+17,8%) u analiziranom periodu. Prosečna godišnja stopa rasta prodaje (PGSR) lekovitog bilja iznosila je 3,4%, a gljiva 30,6%. PGSR izvoza NDŠP je +32,6%. Plasman sortimenata bukve K klase beleži PGSR otkupa od oko +12,7%. U 2013. godini utvrđeno je da su NDŠP sa najvećom tržišnom vrednošću: borovnica, suvi vrganj i lisičarka. Njihov ukupan bruto prihod na domaćem tržištu je u 2013. godini 82.350.000 RSD. Ukupan bruto prihod na domaćem tržištu ŠGŠL od analiziranih sortimenata bukve je 86.963.022,49 RSD., One of the main tasks of marketing research is the assessment of market potential. The aim of this research was to analyze the dynamics of selling and buying of wood and nonwood forest products (NWFPs) within the analyzed enterprises in the Jablanica District. The purpose of this research was to examine the possibilities for the development of small and medium-sized enterprises (SMEs) directed towards a sustainable use of forest products in the area of the Jablanica District. The subject of this research is: purchased and placed quantities in the analyzed enterprises, as well as the prices that were realized for the products, with special emphasis on commercially important mushrooms. The research was conducted in the territory of Jablanica and it included five enterprises engaged in the purchasing, processing and sale of NWFPs and the Forest Estate (FE) 'Forest' Leskovac. The purchase of raw forest fruits and herbs had a growing trend (+ 17.8%) in the 2006-2013 period. The average annual growth rate (AAGR) of sales was 3.4% for medicinal plants and 30.6% for mushrooms. The AAGR of NWFPs export was + 32.6%. The placement of beech wood assortments (K class) recorded a purchase AAGR of app. + 12.7%. In 2013, it was found that the NWFPs with the highest market value were: blueberry, dried boletus and chanterelle. In 2013, their total gross revenue in the domestic market amounted to 82.3 million RSD, whereas the total gross revenue of the analyzed beech wood assortments was 87 million RSD.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Ocena tržišnog potencijala šumskih proizvoda kao osnova za razvoj sektora šumarstva u Jablaničkom okrugu, Assessment of forest products market potential as a basis for forest sector development in the Jablanica district",
pages = "62-45",
number = "111",
doi = "10.2298/GSF1511045K",
url = "conv_424"
}

Keča, L., Mitrović, M., Marčeta, M., Keča, N.,& Pupovac, L.. (2015). Ocena tržišnog potencijala šumskih proizvoda kao osnova za razvoj sektora šumarstva u Jablaničkom okrugu. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(111), 45-62.
https://doi.org/10.2298/GSF1511045K
conv_424

Keča L, Mitrović M, Marčeta M, Keča N, Pupovac L. Ocena tržišnog potencijala šumskih proizvoda kao osnova za razvoj sektora šumarstva u Jablaničkom okrugu. in Glasnik Šumarskog fakulteta. 2015;(111):45-62.
doi:10.2298/GSF1511045K
conv_424 .

Keča, Ljiljana, Mitrović, Marija, Marčeta, Milica, Keča, Nenad, Pupovac, Ljubomir, "Ocena tržišnog potencijala šumskih proizvoda kao osnova za razvoj sektora šumarstva u Jablaničkom okrugu" in Glasnik Šumarskog fakulteta, no. 111 (2015):45-62,
https://doi.org/10.2298/GSF1511045K .,
conv_424 .

TY  - JOUR
AU  - Milenković, Ivan
AU  - Keča, Nenad
AU  - Zlatković, Milica
AU  - Nowakowska, Justyna A.
AU  - Oszako, Tomasz
AU  - Karadžić, Dragan
PY  - 2013
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/558
AB  - Veliki broj studija je pokazao da je više vrsta iz roda Phytophthora direktno povezano sa propadanjem stabala u različitim šumama, i da su ovi organizmi glavni izazivači truleži i gubitka finog korenja, nekroza i ozleda na matičnom korenju. Uzimajući u obzir sve navedene simptome, kao i rizike po šumarstvo i biodiverzitet, koje prisustvo ovih patogenih vrsta nosi, sprovedeno je istraživanje u Šumskom gazdinstvu 'Šumarstvo' - Raška u gazdinskoj jedinici 'Turjak-Vršne', Šumska uprava Novi Pazar, sa ciljem da se izoluju i identifikuju najvažnije vrste ovih patogenih organizama, kao i da se utvrde glavni domaćini. Sakupljani su uzorci supstrata oko korena, vode i nekrotičnih tkiva, a izolacija je vršena prema poznatoj metodologiji pomoću mamaka i direktnim postavljanjem tkiva na hranljive podloge. Testirano je 11 različitih domaćina, od čega je pet bilo pozitivno i nakon izvedenih testova izolacije, dobijeno je ukupno 29 izolata. Domaćini sa kojih je dobijeno najviše izolata su Alnus glutinosa sa 12 i Fagus sylvatica sa sedam izolata. Najčešće izolovana vrsta je bila Phytophthora plurivora i izolovana je sa tri različita domaćina. Takođe, dobijena je i P. cactorum, a identifikacija pet izolata je još uvek u toku. Ovo je prvi nalaz Phytophthora plurivora, P. gonapodyides i Phytophthora spp. na jovi u Srbiji.
AB  - Numerous studies have shown that several Phytophthora species are directly connected with the tree decline in various forests, and that these organisms are the main cause of decay and loss of fine roots, necrosis as well as of the wounds of mother roots. Due to the previously recorded symptoms and high risk to forestry and biodiversity posed by the presence of these species, a study was performed in the Forest Estate 'Šumarstvo' - Raška, in the forest management unit 'Turjak-Vršine', Forest administration in Novi Pazar. The aims of the research were to isolate and identify the Phytophthora species and their associated hosts. The samples of rhizophere soil, water and necrotic tissues were taken, and the isolation was performed according to a known methodology, using baits and direct setting of tissue culture on the media. Eleven hosts were tested, five hosts were positive and a total of 29 isolates were obtained. The hosts with the most isolates obtained were Alnus glutinosa with 12 and Fagus sylvatica with 7 isolates. The most frequently isolated species was Phytophthora plurivora, which occurred on three hosts. P. cactorum was also obtained, and the identification of five other isolates is currently going on. This is the first record of P. plurivora, P. gonapodyides and Phytophthora spp. on alder trees in Serbia.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Pojava Phytophthora vrsta na području gazdinske jedinice 'Turjak-Vršine'
T1  - Occurrence of Phytophthora species in the management unit 'Turjak-Vršine'
EP  - 128
IS  - 108
SP  - 109
DO  - 10.2298/GSF1308109M
UR  - conv_397
ER  - 

@article{
author = "Milenković, Ivan and Keča, Nenad and Zlatković, Milica and Nowakowska, Justyna A. and Oszako, Tomasz and Karadžić, Dragan",
year = "2013",
abstract = "Veliki broj studija je pokazao da je više vrsta iz roda Phytophthora direktno povezano sa propadanjem stabala u različitim šumama, i da su ovi organizmi glavni izazivači truleži i gubitka finog korenja, nekroza i ozleda na matičnom korenju. Uzimajući u obzir sve navedene simptome, kao i rizike po šumarstvo i biodiverzitet, koje prisustvo ovih patogenih vrsta nosi, sprovedeno je istraživanje u Šumskom gazdinstvu 'Šumarstvo' - Raška u gazdinskoj jedinici 'Turjak-Vršne', Šumska uprava Novi Pazar, sa ciljem da se izoluju i identifikuju najvažnije vrste ovih patogenih organizama, kao i da se utvrde glavni domaćini. Sakupljani su uzorci supstrata oko korena, vode i nekrotičnih tkiva, a izolacija je vršena prema poznatoj metodologiji pomoću mamaka i direktnim postavljanjem tkiva na hranljive podloge. Testirano je 11 različitih domaćina, od čega je pet bilo pozitivno i nakon izvedenih testova izolacije, dobijeno je ukupno 29 izolata. Domaćini sa kojih je dobijeno najviše izolata su Alnus glutinosa sa 12 i Fagus sylvatica sa sedam izolata. Najčešće izolovana vrsta je bila Phytophthora plurivora i izolovana je sa tri različita domaćina. Takođe, dobijena je i P. cactorum, a identifikacija pet izolata je još uvek u toku. Ovo je prvi nalaz Phytophthora plurivora, P. gonapodyides i Phytophthora spp. na jovi u Srbiji., Numerous studies have shown that several Phytophthora species are directly connected with the tree decline in various forests, and that these organisms are the main cause of decay and loss of fine roots, necrosis as well as of the wounds of mother roots. Due to the previously recorded symptoms and high risk to forestry and biodiversity posed by the presence of these species, a study was performed in the Forest Estate 'Šumarstvo' - Raška, in the forest management unit 'Turjak-Vršine', Forest administration in Novi Pazar. The aims of the research were to isolate and identify the Phytophthora species and their associated hosts. The samples of rhizophere soil, water and necrotic tissues were taken, and the isolation was performed according to a known methodology, using baits and direct setting of tissue culture on the media. Eleven hosts were tested, five hosts were positive and a total of 29 isolates were obtained. The hosts with the most isolates obtained were Alnus glutinosa with 12 and Fagus sylvatica with 7 isolates. The most frequently isolated species was Phytophthora plurivora, which occurred on three hosts. P. cactorum was also obtained, and the identification of five other isolates is currently going on. This is the first record of P. plurivora, P. gonapodyides and Phytophthora spp. on alder trees in Serbia.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Pojava Phytophthora vrsta na području gazdinske jedinice 'Turjak-Vršine', Occurrence of Phytophthora species in the management unit 'Turjak-Vršine'",
pages = "128-109",
number = "108",
doi = "10.2298/GSF1308109M",
url = "conv_397"
}

Milenković, I., Keča, N., Zlatković, M., Nowakowska, J. A., Oszako, T.,& Karadžić, D.. (2013). Pojava Phytophthora vrsta na području gazdinske jedinice 'Turjak-Vršine'. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(108), 109-128.
https://doi.org/10.2298/GSF1308109M
conv_397

Milenković I, Keča N, Zlatković M, Nowakowska JA, Oszako T, Karadžić D. Pojava Phytophthora vrsta na području gazdinske jedinice 'Turjak-Vršine'. in Glasnik Šumarskog fakulteta. 2013;(108):109-128.
doi:10.2298/GSF1308109M
conv_397 .

Milenković, Ivan, Keča, Nenad, Zlatković, Milica, Nowakowska, Justyna A., Oszako, Tomasz, Karadžić, Dragan, "Pojava Phytophthora vrsta na području gazdinske jedinice 'Turjak-Vršine'" in Glasnik Šumarskog fakulteta, no. 108 (2013):109-128,
https://doi.org/10.2298/GSF1308109M .,
conv_397 .

TY  - JOUR
AU  - Keča, Ljiljana
AU  - Keča, Nenad
PY  - 2013
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/513
AB  - U radu je prikazana analiza komercijalne isplativosti uzgoja topola, na primeru plantaže starosti 42 godine. Cilj istraživanja je da se na osnovu analize troškova i prihoda u periodu od 42 godine, korišćenjem metoda dinamičke analize, proveri opravdanost uloženih finansijskih sredstava u veštačke topoline zasade. Proračun je vršen za diskontnu stopu od 12%. Plantaža se nalazi na zemljištu aluvijalni semiglej, Populus x euramericana cl. I-214, razmaka sadnje 6 x 3 m. Pri diskontnoj stopi od 12%, projekat je za trajanje proizvodnog ciklusa od 42 godine neisplativ. Interna stopa prinosa je 5,51%, što je znatno ispod kalkulativne diskontne stope od 12%, pa bi finansiranje projekta pomoću nekog kreditnog aranžmana bilo praktično nemoguće pod ovim uslovima. Odnos korist-trošak je 0,24, a analizom rezultat roka povraćaja novca došlo se do zaključka da je praktično neprihvatljivo finansirati sastojinu na ovaj način primenjujući diskontnu stopu od 6%.
AB  - Commercial profitability of poplar cultivation was analyzed in an artificial poplar plantation in Serbia. The aim of this study was to validate the invested financial means in the artificial poplar plantation, on the basis of the analysis of costs and receipts during a 42-year rotation, on alluvial semigley, at a discount rate of 12%. Methods of dynamic investment calculation (net present value - NPV, internal rate of return - IRR, benefit-cost method - B/C and payback period - PBP) were used. The investigated plantations were established from Populus x euramericana cl. I-214, with a planting spacing of 6 x 3 m. At the calculation discount rate of 12%, the project for the production cycle of 42 years was not cost-effective from the economic aspect. The discount rate of 6% can be accepted in the studied plot because of the better site (alluvial semigley), but the oldness of the stand is unfavorable. For the studied sample plot, IRR was 5.51 %. B/C at r=12% in the study compartment was 0.24. The analysis shows that PBP is practically unacceptable for the investor at the discount rate of 6%. In practice, it is necessary to improve the position of producers in getting financial means for investment in poplar cultivation, so as to stimulate the establishment of artificial poplar plantations, especially in the private sector (on private land).
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Procena investicija u plantaži topole starosti 42 godine
T1  - Investment appraisal of a poplar plantation aged 42 years
EP  - 140
IS  - 107
SP  - 127
DO  - 10.2298/GSF120706002K
UR  - conv_386
ER  - 

@article{
author = "Keča, Ljiljana and Keča, Nenad",
year = "2013",
abstract = "U radu je prikazana analiza komercijalne isplativosti uzgoja topola, na primeru plantaže starosti 42 godine. Cilj istraživanja je da se na osnovu analize troškova i prihoda u periodu od 42 godine, korišćenjem metoda dinamičke analize, proveri opravdanost uloženih finansijskih sredstava u veštačke topoline zasade. Proračun je vršen za diskontnu stopu od 12%. Plantaža se nalazi na zemljištu aluvijalni semiglej, Populus x euramericana cl. I-214, razmaka sadnje 6 x 3 m. Pri diskontnoj stopi od 12%, projekat je za trajanje proizvodnog ciklusa od 42 godine neisplativ. Interna stopa prinosa je 5,51%, što je znatno ispod kalkulativne diskontne stope od 12%, pa bi finansiranje projekta pomoću nekog kreditnog aranžmana bilo praktično nemoguće pod ovim uslovima. Odnos korist-trošak je 0,24, a analizom rezultat roka povraćaja novca došlo se do zaključka da je praktično neprihvatljivo finansirati sastojinu na ovaj način primenjujući diskontnu stopu od 6%., Commercial profitability of poplar cultivation was analyzed in an artificial poplar plantation in Serbia. The aim of this study was to validate the invested financial means in the artificial poplar plantation, on the basis of the analysis of costs and receipts during a 42-year rotation, on alluvial semigley, at a discount rate of 12%. Methods of dynamic investment calculation (net present value - NPV, internal rate of return - IRR, benefit-cost method - B/C and payback period - PBP) were used. The investigated plantations were established from Populus x euramericana cl. I-214, with a planting spacing of 6 x 3 m. At the calculation discount rate of 12%, the project for the production cycle of 42 years was not cost-effective from the economic aspect. The discount rate of 6% can be accepted in the studied plot because of the better site (alluvial semigley), but the oldness of the stand is unfavorable. For the studied sample plot, IRR was 5.51 %. B/C at r=12% in the study compartment was 0.24. The analysis shows that PBP is practically unacceptable for the investor at the discount rate of 6%. In practice, it is necessary to improve the position of producers in getting financial means for investment in poplar cultivation, so as to stimulate the establishment of artificial poplar plantations, especially in the private sector (on private land).",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Procena investicija u plantaži topole starosti 42 godine, Investment appraisal of a poplar plantation aged 42 years",
pages = "140-127",
number = "107",
doi = "10.2298/GSF120706002K",
url = "conv_386"
}

Keča, L.,& Keča, N.. (2013). Procena investicija u plantaži topole starosti 42 godine. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(107), 127-140.
https://doi.org/10.2298/GSF120706002K
conv_386

Keča L, Keča N. Procena investicija u plantaži topole starosti 42 godine. in Glasnik Šumarskog fakulteta. 2013;(107):127-140.
doi:10.2298/GSF120706002K
conv_386 .

Keča, Ljiljana, Keča, Nenad, "Procena investicija u plantaži topole starosti 42 godine" in Glasnik Šumarskog fakulteta, no. 107 (2013):127-140,
https://doi.org/10.2298/GSF120706002K .,
conv_386 .

TY  - JOUR
AU  - Keča, Ljiljana
AU  - Keča, Nenad
AU  - Rekola, M.
PY  - 2013
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/530
AB  - In recent decades, gathering and utilization of non-wood forest products (NWFPs) have enjoyed a noticeable increase in the interest of both scientific and professional organizations, non-governmental institutions and private sector in Serbia. The Western Balkans have a rich biodiversity with a long history of collection and use of NWFPs and an increasing level of commercialisation. The paper presents an analysis of NWFPs commercialization using value chain method. The analysis is useful in determining the importance of stakeholders or individuals, such as collectors, processors, enterprises and exporters, in driving the trade in NWFPs from Serbia. The objective was to assess the constraints and opportunities for NWFP - based enterprises, and to design more efficient and competitive business solutions by analyzing relationships between chain actors. Primary data were collected through in-depth interview and using open-ended questionnaires with NWFP pickers and processors from around the Serbia. The data were analysed using value chain analysis (VCA), marketing mix, SWOT analysis and analytic hierarchy process (AHP). The results show the most important raw and final products, prices, types of promotion and structure of distribution channels for NWFPs in Serbia. Processors face challenges of a lack of finance, support from state, insufficient processing technology, and poor transport and communication infrastructure.
T2  - International Forestry Review
T1  - Value chains of Serbian non-wood forest products
EP  - 335
IS  - 3
SP  - 315
VL  - 15
DO  - 10.1505/146554813807700164
UR  - conv_2149
ER  - 

@article{
author = "Keča, Ljiljana and Keča, Nenad and Rekola, M.",
year = "2013",
abstract = "In recent decades, gathering and utilization of non-wood forest products (NWFPs) have enjoyed a noticeable increase in the interest of both scientific and professional organizations, non-governmental institutions and private sector in Serbia. The Western Balkans have a rich biodiversity with a long history of collection and use of NWFPs and an increasing level of commercialisation. The paper presents an analysis of NWFPs commercialization using value chain method. The analysis is useful in determining the importance of stakeholders or individuals, such as collectors, processors, enterprises and exporters, in driving the trade in NWFPs from Serbia. The objective was to assess the constraints and opportunities for NWFP - based enterprises, and to design more efficient and competitive business solutions by analyzing relationships between chain actors. Primary data were collected through in-depth interview and using open-ended questionnaires with NWFP pickers and processors from around the Serbia. The data were analysed using value chain analysis (VCA), marketing mix, SWOT analysis and analytic hierarchy process (AHP). The results show the most important raw and final products, prices, types of promotion and structure of distribution channels for NWFPs in Serbia. Processors face challenges of a lack of finance, support from state, insufficient processing technology, and poor transport and communication infrastructure.",
journal = "International Forestry Review",
title = "Value chains of Serbian non-wood forest products",
pages = "335-315",
number = "3",
volume = "15",
doi = "10.1505/146554813807700164",
url = "conv_2149"
}

Keča, L., Keča, N.,& Rekola, M.. (2013). Value chains of Serbian non-wood forest products. in International Forestry Review, 15(3), 315-335.
https://doi.org/10.1505/146554813807700164
conv_2149

Keča L, Keča N, Rekola M. Value chains of Serbian non-wood forest products. in International Forestry Review. 2013;15(3):315-335.
doi:10.1505/146554813807700164
conv_2149 .

Keča, Ljiljana, Keča, Nenad, Rekola, M., "Value chains of Serbian non-wood forest products" in International Forestry Review, 15, no. 3 (2013):315-335,
https://doi.org/10.1505/146554813807700164 .,
conv_2149 .

TY  - JOUR
AU  - Keča, Ljiljana
AU  - Keča, Nenad
PY  - 2012
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/423
AB  - Background and purpose: Due to the fact that poplar rotation is one of the shortest in forestry, and as production of poplar wood requires rational and well-planned management, the potentials of sites and species must be maximally utilised. The main characteristics of the procedure of investment in poplar cultivation, is the fact that the conditions for the beginning of production and their exploitation are not created simultaneously. The main goal of the work reported in this paper was to examine the financial effects of different discount rates on the cost-efficiency values of studied poplar plantation, based on an analysis of the present value of costs and revenues over a stated time period using different methods of investment appraisal. Material and methods: Investment Appraisal also known as Capital Budgeting is used to asses whether capital expenditure on particular poplar plantations will be beneficial for the entity or not. The investigated plantation was established from Populus x euramericana cl. I-214 on alluvial semigley, with planting spacing 6 x 3 m, aged 26 years, for technical wood production. The data used in this study were collected from the archives of the, according to the age at plantation established and from the management and materials books of the forest enterprise "Vojvodinasume". During two-year study, the material was collected from study plot in order to assess the density, distribution and significance of individual fungal organisms present in the plantation. Identification was based on the morphological characteristics of species. Results and conclusions: Under the calculation discount rate of 12%, the project for the production cycle of 26 years was not cost-effective from the economic aspect. The discount rate of 6% can be accepted in this studied plot because of the better sites (alluvial semigley) and youngness of the stand. For the studied sample plot IRR is 6.94. R for the r= 12% in the study compartment is 0.407. The analysis shows that PBP is practically unacceptable for the investor under the discount rate of 6%. In the studied plot altogether 11 species of fungi causing significant damages in hybrid poplar plantations were identified. Two were found on cortical tissue, 6 on leaves and 3 species are causing decay. Number of trees attacked with decaying fungi, like Fomes fomentarius, Trametes suaveolens, was bellow 2%/ two percentage.
PB  - Croatian Forest Research Institute
T2  - South-East European Forestry
T1  - Commercial Profitability of Poplar Plantation with Reference to the Damages Caused by Fungi
EP  - 31
IS  - 1
SP  - 23
VL  - 3
DO  - 10.15177/seefor.12-03
UR  - conv_2378
ER  - 

@article{
author = "Keča, Ljiljana and Keča, Nenad",
year = "2012",
abstract = "Background and purpose: Due to the fact that poplar rotation is one of the shortest in forestry, and as production of poplar wood requires rational and well-planned management, the potentials of sites and species must be maximally utilised. The main characteristics of the procedure of investment in poplar cultivation, is the fact that the conditions for the beginning of production and their exploitation are not created simultaneously. The main goal of the work reported in this paper was to examine the financial effects of different discount rates on the cost-efficiency values of studied poplar plantation, based on an analysis of the present value of costs and revenues over a stated time period using different methods of investment appraisal. Material and methods: Investment Appraisal also known as Capital Budgeting is used to asses whether capital expenditure on particular poplar plantations will be beneficial for the entity or not. The investigated plantation was established from Populus x euramericana cl. I-214 on alluvial semigley, with planting spacing 6 x 3 m, aged 26 years, for technical wood production. The data used in this study were collected from the archives of the, according to the age at plantation established and from the management and materials books of the forest enterprise "Vojvodinasume". During two-year study, the material was collected from study plot in order to assess the density, distribution and significance of individual fungal organisms present in the plantation. Identification was based on the morphological characteristics of species. Results and conclusions: Under the calculation discount rate of 12%, the project for the production cycle of 26 years was not cost-effective from the economic aspect. The discount rate of 6% can be accepted in this studied plot because of the better sites (alluvial semigley) and youngness of the stand. For the studied sample plot IRR is 6.94. R for the r= 12% in the study compartment is 0.407. The analysis shows that PBP is practically unacceptable for the investor under the discount rate of 6%. In the studied plot altogether 11 species of fungi causing significant damages in hybrid poplar plantations were identified. Two were found on cortical tissue, 6 on leaves and 3 species are causing decay. Number of trees attacked with decaying fungi, like Fomes fomentarius, Trametes suaveolens, was bellow 2%/ two percentage.",
publisher = "Croatian Forest Research Institute",
journal = "South-East European Forestry",
title = "Commercial Profitability of Poplar Plantation with Reference to the Damages Caused by Fungi",
pages = "31-23",
number = "1",
volume = "3",
doi = "10.15177/seefor.12-03",
url = "conv_2378"
}

Keča, L.,& Keča, N.. (2012). Commercial Profitability of Poplar Plantation with Reference to the Damages Caused by Fungi. in South-East European Forestry
Croatian Forest Research Institute., 3(1), 23-31.
https://doi.org/10.15177/seefor.12-03
conv_2378

Keča L, Keča N. Commercial Profitability of Poplar Plantation with Reference to the Damages Caused by Fungi. in South-East European Forestry. 2012;3(1):23-31.
doi:10.15177/seefor.12-03
conv_2378 .

Keča, Ljiljana, Keča, Nenad, "Commercial Profitability of Poplar Plantation with Reference to the Damages Caused by Fungi" in South-East European Forestry, 3, no. 1 (2012):23-31,
https://doi.org/10.15177/seefor.12-03 .,
conv_2378 .

TY  - JOUR
AU  - Keča, Ljiljana
AU  - Keča, Nenad
AU  - Pantić, Damjan
PY  - 2012
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/469
AB  - Net Present Value and Internal Rate of Return were indicators used in the cost analysis of commercial poplar plantations in Serbia. The study was conducted on four types of sites under plantations of Populus x euramericana cl. 1-214 aged 24-42 years. The aim was to examine the financial results of plantations of different ages at different discount rates. For a discount rate r = 12%, all the tested areas had a negative NPV, regardless of age and site quality. At r = 6%, shorter production cycles to up to 28 years of age on better site classes had positive NPVs (80-580 (sic) ha(-1)), while at r = 4% the investments were financially justified in all cases. IRRs varied in the range 4.32-6.94% at a discount rate of 12%. The best financial results are achieved on the best sites, with the shortest rotation cycles. Determined financial rotation length was 17 years.
T2  - International Forestry Review
T1  - Net Present Value and Internal Rate of Return as indicators for assessment of cost-efficiency of poplar plantations: a Serbian case study
EP  - 156
IS  - 2
SP  - 145
VL  - 14
DO  - 10.1505/146554812800923345
UR  - conv_2205
ER  - 

@article{
author = "Keča, Ljiljana and Keča, Nenad and Pantić, Damjan",
year = "2012",
abstract = "Net Present Value and Internal Rate of Return were indicators used in the cost analysis of commercial poplar plantations in Serbia. The study was conducted on four types of sites under plantations of Populus x euramericana cl. 1-214 aged 24-42 years. The aim was to examine the financial results of plantations of different ages at different discount rates. For a discount rate r = 12%, all the tested areas had a negative NPV, regardless of age and site quality. At r = 6%, shorter production cycles to up to 28 years of age on better site classes had positive NPVs (80-580 (sic) ha(-1)), while at r = 4% the investments were financially justified in all cases. IRRs varied in the range 4.32-6.94% at a discount rate of 12%. The best financial results are achieved on the best sites, with the shortest rotation cycles. Determined financial rotation length was 17 years.",
journal = "International Forestry Review",
title = "Net Present Value and Internal Rate of Return as indicators for assessment of cost-efficiency of poplar plantations: a Serbian case study",
pages = "156-145",
number = "2",
volume = "14",
doi = "10.1505/146554812800923345",
url = "conv_2205"
}

Keča, L., Keča, N.,& Pantić, D.. (2012). Net Present Value and Internal Rate of Return as indicators for assessment of cost-efficiency of poplar plantations: a Serbian case study. in International Forestry Review, 14(2), 145-156.
https://doi.org/10.1505/146554812800923345
conv_2205

Keča L, Keča N, Pantić D. Net Present Value and Internal Rate of Return as indicators for assessment of cost-efficiency of poplar plantations: a Serbian case study. in International Forestry Review. 2012;14(2):145-156.
doi:10.1505/146554812800923345
conv_2205 .

Keča, Ljiljana, Keča, Nenad, Pantić, Damjan, "Net Present Value and Internal Rate of Return as indicators for assessment of cost-efficiency of poplar plantations: a Serbian case study" in International Forestry Review, 14, no. 2 (2012):145-156,
https://doi.org/10.1505/146554812800923345 .,
conv_2205 .

TY  - JOUR
AU  - Keča, Nenad
AU  - Keča, Ljiljana
PY  - 2012
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/439
AB  - North temperate coniferous forests are known to suffer from root and butt rot caused by Heterobasidion spp., resulting in severe economic losses. Since the mid-twentieth century, various intensities of fungus-inflicted damage have been reported in Scots pine and Norway spruce stands first in the former Yugoslavia and later on in Serbia. Despite the observed damage, the measures taken to protect tree stumps, which serve as an entry for basidiospore infections, have been rare or absent. Sodium borate (borax) has been used at certain locations to prevent Heterobasidion infection following damage caused by wind or snowstorms. This study aimed to compare the efficiency of sodium borate and Phlebiopsis gigailtea to control the establishment of new Heterobasidion infections and to assess the cost of stump protection using these protective agents. Two sites were chosen and both products were applied to the freshly cut stumps. Thirty stumps per treatment and 15 control stumps were analysed at both the sites after 3, 9 and 12 months; therefore, a total of 450 stumps were included in the analysis. The percentages of infection in the borax- and P. gigantea-treated stumps and the untreated stumps were 4, 7 and 20%, respectively. The efficiency of these treatments was very high and ranged from 78% (for borax) to 94% (for P. gigantea). The stump area occupied by P. gigantea ranged from 20-91%, and mycelia could be observed up to 50 cm inside the stumps after 12 months of treatment. The estimated costs of these treatments 5-5.7 Euro cents per stump, depending on the price of the product applied. Thus, the results of this research reveal that stump protection is both ecologically and economically justified.
T2  - Baltic Forestry
T1  - The Efficiency of Rotstop and Sodium Borate to Control Primary Infections of Heterobasidion to Picea abeis Stumps: a Serbian Study
EP  - 254
IS  - 2
SP  - 247
VL  - 18
UR  - conv_839
ER  - 

@article{
author = "Keča, Nenad and Keča, Ljiljana",
year = "2012",
abstract = "North temperate coniferous forests are known to suffer from root and butt rot caused by Heterobasidion spp., resulting in severe economic losses. Since the mid-twentieth century, various intensities of fungus-inflicted damage have been reported in Scots pine and Norway spruce stands first in the former Yugoslavia and later on in Serbia. Despite the observed damage, the measures taken to protect tree stumps, which serve as an entry for basidiospore infections, have been rare or absent. Sodium borate (borax) has been used at certain locations to prevent Heterobasidion infection following damage caused by wind or snowstorms. This study aimed to compare the efficiency of sodium borate and Phlebiopsis gigailtea to control the establishment of new Heterobasidion infections and to assess the cost of stump protection using these protective agents. Two sites were chosen and both products were applied to the freshly cut stumps. Thirty stumps per treatment and 15 control stumps were analysed at both the sites after 3, 9 and 12 months; therefore, a total of 450 stumps were included in the analysis. The percentages of infection in the borax- and P. gigantea-treated stumps and the untreated stumps were 4, 7 and 20%, respectively. The efficiency of these treatments was very high and ranged from 78% (for borax) to 94% (for P. gigantea). The stump area occupied by P. gigantea ranged from 20-91%, and mycelia could be observed up to 50 cm inside the stumps after 12 months of treatment. The estimated costs of these treatments 5-5.7 Euro cents per stump, depending on the price of the product applied. Thus, the results of this research reveal that stump protection is both ecologically and economically justified.",
journal = "Baltic Forestry",
title = "The Efficiency of Rotstop and Sodium Borate to Control Primary Infections of Heterobasidion to Picea abeis Stumps: a Serbian Study",
pages = "254-247",
number = "2",
volume = "18",
url = "conv_839"
}

Keča, N.,& Keča, L.. (2012). The Efficiency of Rotstop and Sodium Borate to Control Primary Infections of Heterobasidion to Picea abeis Stumps: a Serbian Study. in Baltic Forestry, 18(2), 247-254.
conv_839

Keča N, Keča L. The Efficiency of Rotstop and Sodium Borate to Control Primary Infections of Heterobasidion to Picea abeis Stumps: a Serbian Study. in Baltic Forestry. 2012;18(2):247-254.
conv_839 .

Keča, Nenad, Keča, Ljiljana, "The Efficiency of Rotstop and Sodium Borate to Control Primary Infections of Heterobasidion to Picea abeis Stumps: a Serbian Study" in Baltic Forestry, 18, no. 2 (2012):247-254,
conv_839 .

TY  - JOUR
AU  - Milenković, Ivan
AU  - Keča, Nenad
AU  - Karadžić, Dragan
AU  - Nowakowska, Justyna A.
AU  - Borys, M.
AU  - Sikora, Katarzyna
AU  - Oszako, Tomasz
PY  - 2012
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/429
AB  - According to many surveys of pathogenic organisms in forest soils, the presence of the Phytophthora genus is very common in both dominant and mixed stands of European beech. In Serbia, Phytophthora species were isolated from rhizosphere soil in declining, as well as apparently healthy stands. After detailed morphological and molecular identification, several Phytophthora species were confirmed. The most common pathogen of fine roots in Serbian European beech stands was Phytophthora plurivora Jung and Burgess. This species was characterized as homothallic, semipapillate, produces sporangia of various shapes, and has an optimum temperature for growth at around 25°C.P. plurivora occurred on 58% of positive samples, followed by P. cambivora (Petri) Buisman at 17%, P. gonapodyides (Petersen) Buisman at 8%, with other unidentified species accounting for the remaining 17%. A pathogenicity test performed with P. plurivora and young beech germinants from ten Polish beech provenances demonstrated the ability of this pathogen to colonize and cause deterioration of plant tissue.
T2  - Folia Forestalia Polonica, Series A
T1  - Incidence of Phytophthora species in beech stands in Serbia
EP  - 232
IS  - 4
SP  - 223
VL  - 54
UR  - conv_2220
ER  - 

@article{
author = "Milenković, Ivan and Keča, Nenad and Karadžić, Dragan and Nowakowska, Justyna A. and Borys, M. and Sikora, Katarzyna and Oszako, Tomasz",
year = "2012",
abstract = "According to many surveys of pathogenic organisms in forest soils, the presence of the Phytophthora genus is very common in both dominant and mixed stands of European beech. In Serbia, Phytophthora species were isolated from rhizosphere soil in declining, as well as apparently healthy stands. After detailed morphological and molecular identification, several Phytophthora species were confirmed. The most common pathogen of fine roots in Serbian European beech stands was Phytophthora plurivora Jung and Burgess. This species was characterized as homothallic, semipapillate, produces sporangia of various shapes, and has an optimum temperature for growth at around 25°C.P. plurivora occurred on 58% of positive samples, followed by P. cambivora (Petri) Buisman at 17%, P. gonapodyides (Petersen) Buisman at 8%, with other unidentified species accounting for the remaining 17%. A pathogenicity test performed with P. plurivora and young beech germinants from ten Polish beech provenances demonstrated the ability of this pathogen to colonize and cause deterioration of plant tissue.",
journal = "Folia Forestalia Polonica, Series A",
title = "Incidence of Phytophthora species in beech stands in Serbia",
pages = "232-223",
number = "4",
volume = "54",
url = "conv_2220"
}

Milenković, I., Keča, N., Karadžić, D., Nowakowska, J. A., Borys, M., Sikora, K.,& Oszako, T.. (2012). Incidence of Phytophthora species in beech stands in Serbia. in Folia Forestalia Polonica, Series A, 54(4), 223-232.
conv_2220

Milenković I, Keča N, Karadžić D, Nowakowska JA, Borys M, Sikora K, Oszako T. Incidence of Phytophthora species in beech stands in Serbia. in Folia Forestalia Polonica, Series A. 2012;54(4):223-232.
conv_2220 .

Milenković, Ivan, Keča, Nenad, Karadžić, Dragan, Nowakowska, Justyna A., Borys, M., Sikora, Katarzyna, Oszako, Tomasz, "Incidence of Phytophthora species in beech stands in Serbia" in Folia Forestalia Polonica, Series A, 54, no. 4 (2012):223-232,
conv_2220 .

TY  - JOUR
AU  - Keča, Ljiljana
AU  - Keča, Nenad
AU  - Pajić, Sanja
PY  - 2011
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/362
AB  - In conditions of increasing wood consumption and demand in the world, the aim of the majority of national economies is to intensify local resource production. Due to the fact that poplar rotation is one of the shortest in forestry, and as production of poplar wood requires rational and well-planned management, the potentials of sites and species must be maximally utilised. Favourable financial effects of such a production should be realized. The commercial profitability of poplar cultivation was analysed in an artificial poplar plantation in Serbia. The aim of the study was to validate the invested financial means in artificial poplar plantations, based on the analysis of costs and receipts in different rotation (25-42) years, on different fluvisols (alluvial semigley, humifluvisol, humogley and alpha/beta-beta gley), at different discount rates (4-12%). Methods of analysis of commercial profitability, especially some methods of dynamic investment calculation (net present value - NPV, internal rate of return - IRR, benefit-cost method - R and pay back period - PBP) were used. The investigated plantations were established from Populus x euramericana cl. I-214. with planting spacing 6 x 6 m. Thirteen study plots - management units (55 stands), with a total area of 331.05 ha were investigated in the period 2002-2010. For a discount rate r = 12%, all tested areas had a negative NPV of 11 088 to 23 676 (sic).ha(-1), regardless of age and site quality. The discount rate of 6% can be accepted by shorter production cycles in younger stands (to the age of 28 years) on better sites (alluvial semigley). IRRs varied in the range 4.32-6.94% (average 5.63%) at a discount rate of 12%. Internal rates were larger for plantations on good quality soil types and for shorter rotations and vice versa. The analysis showed that PBP is practically unacceptable for the investor under the discount rate of 6%. The most favourable situation is the discount rate of 2% in younger plantations. The average amount of R was 0.36 for all studied plots.
T2  - Baltic Forestry
T1  - Investment Appraisal of Poplar Plantations in Serbia
EP  - 279
IS  - 2
SP  - 268
VL  - 17
UR  - conv_2215
ER  - 

@article{
author = "Keča, Ljiljana and Keča, Nenad and Pajić, Sanja",
year = "2011",
abstract = "In conditions of increasing wood consumption and demand in the world, the aim of the majority of national economies is to intensify local resource production. Due to the fact that poplar rotation is one of the shortest in forestry, and as production of poplar wood requires rational and well-planned management, the potentials of sites and species must be maximally utilised. Favourable financial effects of such a production should be realized. The commercial profitability of poplar cultivation was analysed in an artificial poplar plantation in Serbia. The aim of the study was to validate the invested financial means in artificial poplar plantations, based on the analysis of costs and receipts in different rotation (25-42) years, on different fluvisols (alluvial semigley, humifluvisol, humogley and alpha/beta-beta gley), at different discount rates (4-12%). Methods of analysis of commercial profitability, especially some methods of dynamic investment calculation (net present value - NPV, internal rate of return - IRR, benefit-cost method - R and pay back period - PBP) were used. The investigated plantations were established from Populus x euramericana cl. I-214. with planting spacing 6 x 6 m. Thirteen study plots - management units (55 stands), with a total area of 331.05 ha were investigated in the period 2002-2010. For a discount rate r = 12%, all tested areas had a negative NPV of 11 088 to 23 676 (sic).ha(-1), regardless of age and site quality. The discount rate of 6% can be accepted by shorter production cycles in younger stands (to the age of 28 years) on better sites (alluvial semigley). IRRs varied in the range 4.32-6.94% (average 5.63%) at a discount rate of 12%. Internal rates were larger for plantations on good quality soil types and for shorter rotations and vice versa. The analysis showed that PBP is practically unacceptable for the investor under the discount rate of 6%. The most favourable situation is the discount rate of 2% in younger plantations. The average amount of R was 0.36 for all studied plots.",
journal = "Baltic Forestry",
title = "Investment Appraisal of Poplar Plantations in Serbia",
pages = "279-268",
number = "2",
volume = "17",
url = "conv_2215"
}

Keča, L., Keča, N.,& Pajić, S.. (2011). Investment Appraisal of Poplar Plantations in Serbia. in Baltic Forestry, 17(2), 268-279.
conv_2215

Keča L, Keča N, Pajić S. Investment Appraisal of Poplar Plantations in Serbia. in Baltic Forestry. 2011;17(2):268-279.
conv_2215 .

Keča, Ljiljana, Keča, Nenad, Pajić, Sanja, "Investment Appraisal of Poplar Plantations in Serbia" in Baltic Forestry, 17, no. 2 (2011):268-279,
conv_2215 .