TY  - JOUR
AU  - Knežević, Stevan Z.
AU  - Elezović, Igor
AU  - Datta, Avishek
AU  - Vrbničanin, Sava
AU  - Glamočlija, Đorđe
AU  - Simić, Milena
AU  - Malidza, Goran
PY  - 2013
UR  - http://rik.mrizp.rs/handle/123456789/506
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
VL  - 59
IS  - 3
SP  - 229
EP  - 235
DO  - 10.1080/09670874.2013.830797
ER  - 

@article{
author = "Knežević, Stevan Z. and Elezović, Igor and Datta, Avishek and Vrbničanin, Sava and Glamočlija, Đorđe and Simić, Milena and Malidza, 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",
volume = "59",
number = "3",
pages = "229-235",
doi = "10.1080/09670874.2013.830797"
}

Knežević, S. Z., Elezović, I., Datta, A., Vrbničanin, S., Glamočlija, Đ., Simić, M.,& Malidza, 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 Đ, Simić M, Malidza 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, Đorđe, Simić, Milena, Malidza, 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 . .