Analysis of oilseed rape stem weevils chemical control using damage rating scale
Authors
Milovac, ŽeljkoZorić, Miroslav
Franeta, Filip
Terzić, Sreten
Petrović-Obradović, Olivera
Marjanović Jeromela, Ana
Article (Accepted Version)
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BACKGROUND: Rape stem weevil (Ceutorhynchus napi Gyll.) and cabbage stem weevil (C.
pallidactylus Marsh.) can cause significant yield losses to oilseed rape (Brassica napus L.),
and chemical control is often needed to protect crops from these pests. The efficacy of six
insecticides, chlorpyriphos+cypermethrin, bifenthrin, alpha-cypermethrin, pirimiphos-methyl,
thiacloprid and tau-fluvalinate, was tested in a four year field trial. Besides the standard efficacy analysis expressed through the number of larvae per stem, a damage rating scale was
introduced and modelled using a regression model for ordinal categorical data.
RESULTS: Compared with the control, expressed through damage rating and larval number,
treatments with chlorpyriphos+cypermethrin and bifenthrin, showed higher efficacy in the
control of stem weevils compared to alpha-cypermethrin and pirimiphos-methyl. The lowest
efficacy was observed in treatments with tau-fluvalinate and thiacloprid.
CONCLUSION: This study ...showed that a combined efficacy evaluation expressed through
both damage rating scale and the count of larvae, supported by an ordinal regression model
for data analysis, is indispensable for obtaining accurate results.
Keywords:
Ceutorhynchus napi / Ceutorhynchus pallidactylus / chemical control / insecticide efficacy / proportional odds modelSource:
Pest Management Science, 2017, 73, 9, 1962-1971Publisher:
- Wiley
Funding / projects:
- Development of new varieties and production technology improvement of oil crops for different purposes (RS-MESTD-Technological Development (TD or TR)-31025)
DOI: 10.1002/ps.4568
ISSN: 1526-498X
WoS: 000406689900022
Scopus: 2-s2.0-85026645722
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Poljoprivredni fakultetTY - JOUR AU - Milovac, Željko AU - Zorić, Miroslav AU - Franeta, Filip AU - Terzić, Sreten AU - Petrović-Obradović, Olivera AU - Marjanović Jeromela, Ana PY - 2017 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/5773 AB - BACKGROUND: Rape stem weevil (Ceutorhynchus napi Gyll.) and cabbage stem weevil (C. pallidactylus Marsh.) can cause significant yield losses to oilseed rape (Brassica napus L.), and chemical control is often needed to protect crops from these pests. The efficacy of six insecticides, chlorpyriphos+cypermethrin, bifenthrin, alpha-cypermethrin, pirimiphos-methyl, thiacloprid and tau-fluvalinate, was tested in a four year field trial. Besides the standard efficacy analysis expressed through the number of larvae per stem, a damage rating scale was introduced and modelled using a regression model for ordinal categorical data. RESULTS: Compared with the control, expressed through damage rating and larval number, treatments with chlorpyriphos+cypermethrin and bifenthrin, showed higher efficacy in the control of stem weevils compared to alpha-cypermethrin and pirimiphos-methyl. The lowest efficacy was observed in treatments with tau-fluvalinate and thiacloprid. CONCLUSION: This study showed that a combined efficacy evaluation expressed through both damage rating scale and the count of larvae, supported by an ordinal regression model for data analysis, is indispensable for obtaining accurate results. PB - Wiley T2 - Pest Management Science T1 - Analysis of oilseed rape stem weevils chemical control using damage rating scale EP - 1971 IS - 9 SP - 1962 VL - 73 DO - 10.1002/ps.4568 ER -
@article{ author = "Milovac, Željko and Zorić, Miroslav and Franeta, Filip and Terzić, Sreten and Petrović-Obradović, Olivera and Marjanović Jeromela, Ana", year = "2017", abstract = "BACKGROUND: Rape stem weevil (Ceutorhynchus napi Gyll.) and cabbage stem weevil (C. pallidactylus Marsh.) can cause significant yield losses to oilseed rape (Brassica napus L.), and chemical control is often needed to protect crops from these pests. The efficacy of six insecticides, chlorpyriphos+cypermethrin, bifenthrin, alpha-cypermethrin, pirimiphos-methyl, thiacloprid and tau-fluvalinate, was tested in a four year field trial. Besides the standard efficacy analysis expressed through the number of larvae per stem, a damage rating scale was introduced and modelled using a regression model for ordinal categorical data. RESULTS: Compared with the control, expressed through damage rating and larval number, treatments with chlorpyriphos+cypermethrin and bifenthrin, showed higher efficacy in the control of stem weevils compared to alpha-cypermethrin and pirimiphos-methyl. The lowest efficacy was observed in treatments with tau-fluvalinate and thiacloprid. CONCLUSION: This study showed that a combined efficacy evaluation expressed through both damage rating scale and the count of larvae, supported by an ordinal regression model for data analysis, is indispensable for obtaining accurate results.", publisher = "Wiley", journal = "Pest Management Science", title = "Analysis of oilseed rape stem weevils chemical control using damage rating scale", pages = "1971-1962", number = "9", volume = "73", doi = "10.1002/ps.4568" }
Milovac, Ž., Zorić, M., Franeta, F., Terzić, S., Petrović-Obradović, O.,& Marjanović Jeromela, A.. (2017). Analysis of oilseed rape stem weevils chemical control using damage rating scale. in Pest Management Science Wiley., 73(9), 1962-1971. https://doi.org/10.1002/ps.4568
Milovac Ž, Zorić M, Franeta F, Terzić S, Petrović-Obradović O, Marjanović Jeromela A. Analysis of oilseed rape stem weevils chemical control using damage rating scale. in Pest Management Science. 2017;73(9):1962-1971. doi:10.1002/ps.4568 .
Milovac, Željko, Zorić, Miroslav, Franeta, Filip, Terzić, Sreten, Petrović-Obradović, Olivera, Marjanović Jeromela, Ana, "Analysis of oilseed rape stem weevils chemical control using damage rating scale" in Pest Management Science, 73, no. 9 (2017):1962-1971, https://doi.org/10.1002/ps.4568 . .