TY  - JOUR
AU  - Knežević, Stevan Z.
AU  - Elezović, Igor
AU  - Datta, Avishek
AU  - Vrbničanin, Sava
AU  - Glamočlija, Djordje
AU  - Simić, Milena
AU  - Malidža, Goran
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3139
AB  - The critical time for weed removal (CTWR) is a period in the crop growth cycle when weed control must be initiated to prevent yield losses. Knowing the CTWR is useful for making decisions about the timing of weed control and in achieving efficient herbicide use from both biological and economic perspectives. Field studies were conducted in 2008 and 2009 at three locations in Serbia and one location in the USA to determine the CTWR in imidazolinone (IMI)-resistant sunflower grown with and without application of pre-emergence (PRE) herbicide. A four-parameter log-logistic model was fitted to data relating relative crop yield to increasing duration of weed presence. The CTWR without PRE herbicide treatment ranged from 14 to 26d after emergence (DAE) corresponding to the V3 (three leaves) to V4 stages compared to 25 to 37 DAE, which corresponded to the V6 to V8 stages with PRE herbicide. The CTWR in IMI-resistant sunflower grown with PRE herbicide can be delayed by an additional 6 to 12 d compared to the crop grown without PRE herbicide under the present experimental conditions. The practical implication of this study is that the use of PRE herbicide could extend post-herbicide treatments by another 6 to 12d with respect to the critical time required for weed removal without PRE herbicide in IMI-resistant sunflower.
PB  - Taylor & Francis Ltd, Abingdon
T2  - International Journal of Pest Management
T1  - Delay in the critical time for weed removal in imidazolinone-resistant sunflower (Helianthus annuus) caused by application of pre-emergence herbicide
EP  - 235
IS  - 3
SP  - 229
VL  - 59
DO  - 10.1080/09670874.2013.830797
ER  - 

@article{
author = "Knežević, Stevan Z. and Elezović, Igor and Datta, Avishek and Vrbničanin, Sava and Glamočlija, Djordje and Simić, Milena and Malidža, Goran",
year = "2013",
abstract = "The critical time for weed removal (CTWR) is a period in the crop growth cycle when weed control must be initiated to prevent yield losses. Knowing the CTWR is useful for making decisions about the timing of weed control and in achieving efficient herbicide use from both biological and economic perspectives. Field studies were conducted in 2008 and 2009 at three locations in Serbia and one location in the USA to determine the CTWR in imidazolinone (IMI)-resistant sunflower grown with and without application of pre-emergence (PRE) herbicide. A four-parameter log-logistic model was fitted to data relating relative crop yield to increasing duration of weed presence. The CTWR without PRE herbicide treatment ranged from 14 to 26d after emergence (DAE) corresponding to the V3 (three leaves) to V4 stages compared to 25 to 37 DAE, which corresponded to the V6 to V8 stages with PRE herbicide. The CTWR in IMI-resistant sunflower grown with PRE herbicide can be delayed by an additional 6 to 12 d compared to the crop grown without PRE herbicide under the present experimental conditions. The practical implication of this study is that the use of PRE herbicide could extend post-herbicide treatments by another 6 to 12d with respect to the critical time required for weed removal without PRE herbicide in IMI-resistant sunflower.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "International Journal of Pest Management",
title = "Delay in the critical time for weed removal in imidazolinone-resistant sunflower (Helianthus annuus) caused by application of pre-emergence herbicide",
pages = "235-229",
number = "3",
volume = "59",
doi = "10.1080/09670874.2013.830797"
}

Knežević, S. Z., Elezović, I., Datta, A., Vrbničanin, S., Glamočlija, D., Simić, M.,& Malidža, G.. (2013). Delay in the critical time for weed removal in imidazolinone-resistant sunflower (Helianthus annuus) caused by application of pre-emergence herbicide. in International Journal of Pest Management
Taylor & Francis Ltd, Abingdon., 59(3), 229-235.
https://doi.org/10.1080/09670874.2013.830797

Knežević SZ, Elezović I, Datta A, Vrbničanin S, Glamočlija D, Simić M, Malidža G. Delay in the critical time for weed removal in imidazolinone-resistant sunflower (Helianthus annuus) caused by application of pre-emergence herbicide. in International Journal of Pest Management. 2013;59(3):229-235.
doi:10.1080/09670874.2013.830797 .

Knežević, Stevan Z., Elezović, Igor, Datta, Avishek, Vrbničanin, Sava, Glamočlija, Djordje, Simić, Milena, Malidža, Goran, "Delay in the critical time for weed removal in imidazolinone-resistant sunflower (Helianthus annuus) caused by application of pre-emergence herbicide" in International Journal of Pest Management, 59, no. 3 (2013):229-235,
https://doi.org/10.1080/09670874.2013.830797 . .

TY  - JOUR
AU  - Elezović, Igor
AU  - Datta, Avishek
AU  - Vrbničanin, Sava
AU  - Glamočlija, Djordje
AU  - Simić, Milena
AU  - Malidža, Goran
AU  - Knežević, Stevan Z.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3031
AB  - With an increase in the use of imidazolinone (IMI)-resistant sunflower, it is important to determine the influence of weed interference and herbicide presence on seed yield and yield components of sunflower. The objective of this study was to determine the effect of different periods of weed presence on seed yield and yield components of IMI-resistant sunflower grown with and without ore-emergence (PRE) herbicide. Field studies were conducted in 2008 and 2009 at three locations in Serbia and one location in Nebraska, USA. A four-parameter log-logistic model described relationship between the crop yield and yield components to increasing duration of weed presence. Sunflower yield and yield components varied between years and among locations. Increasing periods of weed interference decreased yield and yield components of sunflower; however, the reductions were greater without PRE herbicide compared to the PRE herbicide treated plots. The length of time weeds could remain in the crop grown without PRE herbicide ranged from 14 to 26 days after emergence (DAE), which corresponded to the V3 (three leaves) to V4 growth stages on the basis of the 5% acceptable yield loss level. The duration of time that weeds could remain in the crop grown with PRE herbicide ranged from 25 to 37 DAE, which corresponded to the V6-V8 growth stages of sunflower. Practical implication of this study is that post-emergence weed control in IMI-resistant sunflower grown with PRE herbicide can be delayed approximately by two weeks compared to the crop grown without PRE herbicide.
PB  - Elsevier Science Bv, Amsterdam
T2  - Field Crops Research
T1  - Yield and yield components of imidazolinone-resistant sunflower (Helianthus annuus L.) are influenced by pre-emergence herbicide and time of post-emergence weed removal
EP  - 146
SP  - 137
VL  - 128
DO  - 10.1016/j.fcr.2011.12.020
ER  - 

@article{
author = "Elezović, Igor and Datta, Avishek and Vrbničanin, Sava and Glamočlija, Djordje and Simić, Milena and Malidža, Goran and Knežević, Stevan Z.",
year = "2012",
abstract = "With an increase in the use of imidazolinone (IMI)-resistant sunflower, it is important to determine the influence of weed interference and herbicide presence on seed yield and yield components of sunflower. The objective of this study was to determine the effect of different periods of weed presence on seed yield and yield components of IMI-resistant sunflower grown with and without ore-emergence (PRE) herbicide. Field studies were conducted in 2008 and 2009 at three locations in Serbia and one location in Nebraska, USA. A four-parameter log-logistic model described relationship between the crop yield and yield components to increasing duration of weed presence. Sunflower yield and yield components varied between years and among locations. Increasing periods of weed interference decreased yield and yield components of sunflower; however, the reductions were greater without PRE herbicide compared to the PRE herbicide treated plots. The length of time weeds could remain in the crop grown without PRE herbicide ranged from 14 to 26 days after emergence (DAE), which corresponded to the V3 (three leaves) to V4 growth stages on the basis of the 5% acceptable yield loss level. The duration of time that weeds could remain in the crop grown with PRE herbicide ranged from 25 to 37 DAE, which corresponded to the V6-V8 growth stages of sunflower. Practical implication of this study is that post-emergence weed control in IMI-resistant sunflower grown with PRE herbicide can be delayed approximately by two weeks compared to the crop grown without PRE herbicide.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Field Crops Research",
title = "Yield and yield components of imidazolinone-resistant sunflower (Helianthus annuus L.) are influenced by pre-emergence herbicide and time of post-emergence weed removal",
pages = "146-137",
volume = "128",
doi = "10.1016/j.fcr.2011.12.020"
}

Elezović, I., Datta, A., Vrbničanin, S., Glamočlija, D., Simić, M., Malidža, G.,& Knežević, S. Z.. (2012). Yield and yield components of imidazolinone-resistant sunflower (Helianthus annuus L.) are influenced by pre-emergence herbicide and time of post-emergence weed removal. in Field Crops Research
Elsevier Science Bv, Amsterdam., 128, 137-146.
https://doi.org/10.1016/j.fcr.2011.12.020

Elezović I, Datta A, Vrbničanin S, Glamočlija D, Simić M, Malidža G, Knežević SZ. Yield and yield components of imidazolinone-resistant sunflower (Helianthus annuus L.) are influenced by pre-emergence herbicide and time of post-emergence weed removal. in Field Crops Research. 2012;128:137-146.
doi:10.1016/j.fcr.2011.12.020 .

Elezović, Igor, Datta, Avishek, Vrbničanin, Sava, Glamočlija, Djordje, Simić, Milena, Malidža, Goran, Knežević, Stevan Z., "Yield and yield components of imidazolinone-resistant sunflower (Helianthus annuus L.) are influenced by pre-emergence herbicide and time of post-emergence weed removal" in Field Crops Research, 128 (2012):137-146,
https://doi.org/10.1016/j.fcr.2011.12.020 . .

TY  - JOUR
AU  - Pavlović, Danijela
AU  - Reinhardt, Charlie
AU  - Elezović, Igor
AU  - Vrbničanin, Sava
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2526
AB  - Glyphosate resistance was found in Lolium rigidum Gaudin (Rigid ryegrass, LOLRI) in South Africa. Suspected glyphosate-resistant L. rigidum populations were collected and grown under greenhouse conditions. The plants were sprayed with a range of doses of glyphosate 35 days after planting and shoot dry biomass was determined 17 days after herbicide treatment. Based on the dose-response experiment conducted in the greenhouse, one population of L. rigidum suspected to be resistant to glyphosate was approximately 5.3 fold more resistant than susceptible population. The other population was 2.8 fold more resistant than susceptible population. Difference between the two suspected resistant populations was 1.9 fold. All plants were treated with glyphosate (1000 g a.i. ha-1) and shikimic acid was extracted 2, 4 and 6 days after treatment. The plants of susceptible populations accumulated more shikimic acid than other two populations.
AB  - Rezistentnost na glifosat je potvrđena kod Lolium rigidum u Južnoj Africi. Semena rezistentne, očekivano glifosat-rezistentne i osetljive populacije L. rigidum su sakupljena u usevu pšenice sa različitih lokaliteta na području Južnoafričke Republike. Testiranje rezistentnosti na glifosat je izvedena u kontrolisanim uslovima staklare Univerziteta u Pretoriji (Južnoafrička Republika). Tridesetpet dana nakon setve (u plastičnim sudovima) biljke su tretirane suspenzijom od 125, 250, 500, 1000, 2000, 4000, 8000 i 12000 ml ha-1 glifosata, a suva masa je izmerena 17 dana nakon primene herbicida. Za fitovanje krive i utvrđivanje efektivne doze (dose-response-test) korišćena je jednačina ne-linearne regresione analize (R softver, drc paket). Na osnovu dobijenih rezultata utvrđena je 5,3 puta veća otpornost na glifosat kod rezistentne populacije L. rigidum (RLR) u poređenju sa osetljivom populacijom (OLR). Kod pretpostavljeno rezistentne populacije (PRP) konstatovana je 2,8 puta veća otpornost u odnosu na osetljivu populaciju. Razlika između pretpostavljeno rezistentne i rezistentne populacije je bila 1,9 puta. Za utvđivanje efekta glifosata na sadržaj šikiminske kiseline biljke su tretirane suspenzijom od 1000 g a.m. ha-1, a sadržaj šikiminske kiseline (HPLC metodom) je meren 2, 4 i 6 dana posle primene herbicida. Sadržaj šikiminske kiseline je bio veći kod osetljive populacije u poređenju sa druge dve testirane populacije L. rigidum. Dakle, potvrđena je rezistentnost RLR populacije, odnosno osetljivost OLR populacije, što obavezuje farmere da sprovode elemente antirezistentne strategije da bi usporili i sprečili ekspanziju rezistentnih populacija L. rigidum na području Južnoafričke Republike. Takođe, ta iskustva treba preneti i na druga područja u svetu da bi se sprečilo/usporilo širenje rezistentnosti korova na glifosat.
PB  - Institut za pesticide i zaštitu životne sredine, Beograd i Društvo za zaštitu bilja Srbije, Beograd
T2  - Pesticidi i fitomedicina
T1  - Identification of glyphosate resistance in Lolium rigidum Gaudin
T1  - Testiranje rezistentnosti Lolium rigidum Gaudin na glifosat
EP  - 399
IS  - 4
SP  - 393
VL  - 26
DO  - 10.2298/PIF1104393P
ER  - 

@article{
author = "Pavlović, Danijela and Reinhardt, Charlie and Elezović, Igor and Vrbničanin, Sava",
year = "2011",
abstract = "Glyphosate resistance was found in Lolium rigidum Gaudin (Rigid ryegrass, LOLRI) in South Africa. Suspected glyphosate-resistant L. rigidum populations were collected and grown under greenhouse conditions. The plants were sprayed with a range of doses of glyphosate 35 days after planting and shoot dry biomass was determined 17 days after herbicide treatment. Based on the dose-response experiment conducted in the greenhouse, one population of L. rigidum suspected to be resistant to glyphosate was approximately 5.3 fold more resistant than susceptible population. The other population was 2.8 fold more resistant than susceptible population. Difference between the two suspected resistant populations was 1.9 fold. All plants were treated with glyphosate (1000 g a.i. ha-1) and shikimic acid was extracted 2, 4 and 6 days after treatment. The plants of susceptible populations accumulated more shikimic acid than other two populations., Rezistentnost na glifosat je potvrđena kod Lolium rigidum u Južnoj Africi. Semena rezistentne, očekivano glifosat-rezistentne i osetljive populacije L. rigidum su sakupljena u usevu pšenice sa različitih lokaliteta na području Južnoafričke Republike. Testiranje rezistentnosti na glifosat je izvedena u kontrolisanim uslovima staklare Univerziteta u Pretoriji (Južnoafrička Republika). Tridesetpet dana nakon setve (u plastičnim sudovima) biljke su tretirane suspenzijom od 125, 250, 500, 1000, 2000, 4000, 8000 i 12000 ml ha-1 glifosata, a suva masa je izmerena 17 dana nakon primene herbicida. Za fitovanje krive i utvrđivanje efektivne doze (dose-response-test) korišćena je jednačina ne-linearne regresione analize (R softver, drc paket). Na osnovu dobijenih rezultata utvrđena je 5,3 puta veća otpornost na glifosat kod rezistentne populacije L. rigidum (RLR) u poređenju sa osetljivom populacijom (OLR). Kod pretpostavljeno rezistentne populacije (PRP) konstatovana je 2,8 puta veća otpornost u odnosu na osetljivu populaciju. Razlika između pretpostavljeno rezistentne i rezistentne populacije je bila 1,9 puta. Za utvđivanje efekta glifosata na sadržaj šikiminske kiseline biljke su tretirane suspenzijom od 1000 g a.m. ha-1, a sadržaj šikiminske kiseline (HPLC metodom) je meren 2, 4 i 6 dana posle primene herbicida. Sadržaj šikiminske kiseline je bio veći kod osetljive populacije u poređenju sa druge dve testirane populacije L. rigidum. Dakle, potvrđena je rezistentnost RLR populacije, odnosno osetljivost OLR populacije, što obavezuje farmere da sprovode elemente antirezistentne strategije da bi usporili i sprečili ekspanziju rezistentnih populacija L. rigidum na području Južnoafričke Republike. Takođe, ta iskustva treba preneti i na druga područja u svetu da bi se sprečilo/usporilo širenje rezistentnosti korova na glifosat.",
publisher = "Institut za pesticide i zaštitu životne sredine, Beograd i Društvo za zaštitu bilja Srbije, Beograd",
journal = "Pesticidi i fitomedicina",
title = "Identification of glyphosate resistance in Lolium rigidum Gaudin, Testiranje rezistentnosti Lolium rigidum Gaudin na glifosat",
pages = "399-393",
number = "4",
volume = "26",
doi = "10.2298/PIF1104393P"
}

Pavlović, D., Reinhardt, C., Elezović, I.,& Vrbničanin, S.. (2011). Identification of glyphosate resistance in Lolium rigidum Gaudin. in Pesticidi i fitomedicina
Institut za pesticide i zaštitu životne sredine, Beograd i Društvo za zaštitu bilja Srbije, Beograd., 26(4), 393-399.
https://doi.org/10.2298/PIF1104393P

Pavlović D, Reinhardt C, Elezović I, Vrbničanin S. Identification of glyphosate resistance in Lolium rigidum Gaudin. in Pesticidi i fitomedicina. 2011;26(4):393-399.
doi:10.2298/PIF1104393P .

Pavlović, Danijela, Reinhardt, Charlie, Elezović, Igor, Vrbničanin, Sava, "Identification of glyphosate resistance in Lolium rigidum Gaudin" in Pesticidi i fitomedicina, 26, no. 4 (2011):393-399,
https://doi.org/10.2298/PIF1104393P . .

TY  - JOUR
AU  - Jovanović-Radovanov, Katarina
AU  - Elezović, Igor
AU  - Vrbničanin, Sava
PY  - 2004
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/756
AB  - The objective of this investigation was to determine the efficacy of CAMBIO (320 g/L bentazone + 90 g/L dicamba) in controlling weeds in wheat. The trials were conducted on two localities at Zemun Polje and Smederevska Palanka in 2000. Both efficacy and phytotoxicity were assessed according to standard EPPO methods. The application rate of CAMBIO was 1 L/ha. The control herbicide was Duplosan KV (mecoprop), applied at a rate of 2 L/ha. Before the application of herbicides, an assessment of species was performed according to Brown-Blanquet, and the following weed species were determined as dominant: Bilderdykia convolvulus L, Myagrum perfoliatum L, Polygonum lapathifolium L, Stachys annua L, Veronica hederifolia L (in Zemun Polje), and Consolida regalis L, Fumaria officinalis L, Lamium purpureum L, Matricaria chamomilla L, Polygonum aviculare L, Sinapis arvensis L, Stellaria media (L.) Vitt., Stachys annua L, and Xanthiu strumarium L. (in Smederevska Palanka). The efficacy of CAMBIO, based on weed numbers and fresh weight, was determined twice: 15 and 45 days after application. CAMBIO showed excellent efficacy against all broad-leaved weed species present. No phytotoxic effect was observed on wheat.
PB  - Herbološko društvo Srbije
T2  - Acta herbologica
T1  - Efficacy of bentazone and dicamba combination in controlling weeds in wheat
T1  - Efikasnost kombinacije bentazona i dikambe u suzbijanju korova u usevu pšenice
EP  - 510
IS  - 2
SP  - 503
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_756
ER  - 

@article{
author = "Jovanović-Radovanov, Katarina and Elezović, Igor and Vrbničanin, Sava",
year = "2004",
abstract = "The objective of this investigation was to determine the efficacy of CAMBIO (320 g/L bentazone + 90 g/L dicamba) in controlling weeds in wheat. The trials were conducted on two localities at Zemun Polje and Smederevska Palanka in 2000. Both efficacy and phytotoxicity were assessed according to standard EPPO methods. The application rate of CAMBIO was 1 L/ha. The control herbicide was Duplosan KV (mecoprop), applied at a rate of 2 L/ha. Before the application of herbicides, an assessment of species was performed according to Brown-Blanquet, and the following weed species were determined as dominant: Bilderdykia convolvulus L, Myagrum perfoliatum L, Polygonum lapathifolium L, Stachys annua L, Veronica hederifolia L (in Zemun Polje), and Consolida regalis L, Fumaria officinalis L, Lamium purpureum L, Matricaria chamomilla L, Polygonum aviculare L, Sinapis arvensis L, Stellaria media (L.) Vitt., Stachys annua L, and Xanthiu strumarium L. (in Smederevska Palanka). The efficacy of CAMBIO, based on weed numbers and fresh weight, was determined twice: 15 and 45 days after application. CAMBIO showed excellent efficacy against all broad-leaved weed species present. No phytotoxic effect was observed on wheat.",
publisher = "Herbološko društvo Srbije",
journal = "Acta herbologica",
title = "Efficacy of bentazone and dicamba combination in controlling weeds in wheat, Efikasnost kombinacije bentazona i dikambe u suzbijanju korova u usevu pšenice",
pages = "510-503",
number = "2",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_756"
}

Jovanović-Radovanov, K., Elezović, I.,& Vrbničanin, S.. (2004). Efficacy of bentazone and dicamba combination in controlling weeds in wheat. in Acta herbologica
Herbološko društvo Srbije., 13(2), 503-510.
https://hdl.handle.net/21.15107/rcub_agrospace_756

Jovanović-Radovanov K, Elezović I, Vrbničanin S. Efficacy of bentazone and dicamba combination in controlling weeds in wheat. in Acta herbologica. 2004;13(2):503-510.
https://hdl.handle.net/21.15107/rcub_agrospace_756 .

Jovanović-Radovanov, Katarina, Elezović, Igor, Vrbničanin, Sava, "Efficacy of bentazone and dicamba combination in controlling weeds in wheat" in Acta herbologica, 13, no. 2 (2004):503-510,
https://hdl.handle.net/21.15107/rcub_agrospace_756 .