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Efficacy of Selected Insecticides for Control of Bollworm in Bt-Cotton, 2013

Efficacy of Selected Insecticides for Control of Bollworm in Bt-Cotton, 2013 applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–2 doi: 10.1093/amt/tsaa112 Section F: Field & Cereal Crops COTTON: Gossypium hirsutum. L., ‘DPL 174RF’ Efficacy of Selected Insecticides for Control of Bollworm HeadA=HeadB=HeadA=HeadB/HeadA in Bt-Cotton, 2013 HeadB=HeadC=HeadB=HeadC/HeadB 1 1 1 2,3 HeadC=HeadD=HeadC=HeadD/HeadC Taylor Dill, Angus L. Catchot, Dung Bao, and Whitney D. Crow Extract3=HeadA=Extract1=HeadA Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi History=Text=History=Text_First State, MS 39762, Delta Mississippi Research and Extension Center, Mississippi State University, Stoneville, MS 38776, and Corresponding author, e-mail: wdc165@msstate.edu EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Section Editor: Donald Cook EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Cotton (cottonseed) | Gossypium spp. EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Bollworm | Helicoverpa zea (Boddie) ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB On 8 Aug 2013, a foliar insecticide study was conducted in cotton At 4 DAT, all Prevathon treatments, Besiege, and Tracer resulted ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC on the R.R. Foil Plant Science Research Center in Starkville, MS. in significantly lower square damage than the untreated control, Statistical design was a randomized complete block with four Declare, or, Karate. While plots treated with Belt or Fastac had ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA replications. Plot size was four rows by 40 feet long planted on lower square damage compared to the Declare treated and untreated 38-inch centers. Insecticides were applied with a tractor-mounted plots. There were no significant differences among treatments for sprayer calibrated to deliver 10.0 gpa at 60 psi through TX-6 Hollow boll damage. At 13 DAT, there were no significant difference among Cone nozzles (2 per row) on 8 Aug during the fourth week of bloom. treatments for number of damaged squares, while Prevathon (17.5 Estimates of bollworm damage were determined by examining 25 oz and 20 oz) and Fastac reduced damaged bolls compared to the squares, 25 bolls, and total larvae present on 25 random plants from untreated check. At 4 and 13 DAT, none of the insecticide treatments the center two rows of each plot at 4 and 13 days after treatment significantly reduced larval densities compared to the untreated (DAT). Data were analyzed with ANOVA and means were separated check. There were no significant differences among treatments for using a Fisher’s Protected LSD (P ≤ 0.05). lint yield. Table 1. Average number of damaged squares and bolls per 25 Treatment/ Formulation Rate/ acre 4 DAT 13 DAT oz form Squares Bolls Squares Bolls Besiege 1.25SC 9.0 1.8c 0.6a 0.0a 0.3ab Karate 2.08CS 2.0 7.1ab 1.1a 1.8a 0.7ab Prevathon 0.43SC 17.5 2.0c 0.4a 0.2a 0.0b Tracer 4SC 3.5 1.6c 0.5a 1.6a 0.9ab Prevathon 0.43SC 14.0 2.6c 0.0a 0.6a 0.3ab Prevathon 0.43SC 20.0 2.2c 0.1a 0.2a 0.1b Belt 4SC 3.0 3.5bc 0.4a 0.4a 0.7ab Declare 1.25EC 1.54 7.3a 0.7a 3.6a 3.2a Fastac 0.83EC 0.83 3.8bc 1.1a 0.9a 0.2b Untreated Check - 9.1a 1.3a 2.2a 3.0a P>F <0.01 0.44 0.08 <0.01 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05). This study was supported by industry gifts of products and/or research funding. © The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/ licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com 2 Arthropod Management T ests, 2021, Vol. 46, No. 1 Table 2. Treatment/Formulation Rate/ acre Larvae per 25 plants Lint Yield oz form 4 DAT 13 DAT lb/acre Besiege 1.25SC 9.0 0.1b 0.0a 1,321.3a Karate 2.08CS 2.0 1.1ab 1.1a 1,152.7a Prevathon 0.43SC 17.5 0.3b 0.0a 1,309.2a Tracer 4SC 3.5 0.1b 0.0a 1,211.1a Prevathon 0.43SC 14.0 0.0b 0.3a 1,300.6a Prevathon 0.43SC 20.0 0.0b 0.0a 1,348.8a Belt 4SC 3.0 0.0b 0.1a 1,238.7a Declare 1.25EC 1.54 3.7a 2.1a 1,209.4a Fastac 0.83EC 0.83 0.3b 0.1a 1,280.0a Untreated Check - 1.4ab 1.2a 1,226.6a P>F <0.01 0.25 0.41 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Efficacy of Selected Insecticides for Control of Bollworm in Bt-Cotton, 2013

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Oxford University Press
Copyright
© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America.
eISSN
2155-9856
DOI
10.1093/amt/tsaa112
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Abstract

applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–2 doi: 10.1093/amt/tsaa112 Section F: Field & Cereal Crops COTTON: Gossypium hirsutum. L., ‘DPL 174RF’ Efficacy of Selected Insecticides for Control of Bollworm HeadA=HeadB=HeadA=HeadB/HeadA in Bt-Cotton, 2013 HeadB=HeadC=HeadB=HeadC/HeadB 1 1 1 2,3 HeadC=HeadD=HeadC=HeadD/HeadC Taylor Dill, Angus L. Catchot, Dung Bao, and Whitney D. Crow Extract3=HeadA=Extract1=HeadA Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi History=Text=History=Text_First State, MS 39762, Delta Mississippi Research and Extension Center, Mississippi State University, Stoneville, MS 38776, and Corresponding author, e-mail: wdc165@msstate.edu EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Section Editor: Donald Cook EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Cotton (cottonseed) | Gossypium spp. EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Bollworm | Helicoverpa zea (Boddie) ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB On 8 Aug 2013, a foliar insecticide study was conducted in cotton At 4 DAT, all Prevathon treatments, Besiege, and Tracer resulted ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC on the R.R. Foil Plant Science Research Center in Starkville, MS. in significantly lower square damage than the untreated control, Statistical design was a randomized complete block with four Declare, or, Karate. While plots treated with Belt or Fastac had ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA replications. Plot size was four rows by 40 feet long planted on lower square damage compared to the Declare treated and untreated 38-inch centers. Insecticides were applied with a tractor-mounted plots. There were no significant differences among treatments for sprayer calibrated to deliver 10.0 gpa at 60 psi through TX-6 Hollow boll damage. At 13 DAT, there were no significant difference among Cone nozzles (2 per row) on 8 Aug during the fourth week of bloom. treatments for number of damaged squares, while Prevathon (17.5 Estimates of bollworm damage were determined by examining 25 oz and 20 oz) and Fastac reduced damaged bolls compared to the squares, 25 bolls, and total larvae present on 25 random plants from untreated check. At 4 and 13 DAT, none of the insecticide treatments the center two rows of each plot at 4 and 13 days after treatment significantly reduced larval densities compared to the untreated (DAT). Data were analyzed with ANOVA and means were separated check. There were no significant differences among treatments for using a Fisher’s Protected LSD (P ≤ 0.05). lint yield. Table 1. Average number of damaged squares and bolls per 25 Treatment/ Formulation Rate/ acre 4 DAT 13 DAT oz form Squares Bolls Squares Bolls Besiege 1.25SC 9.0 1.8c 0.6a 0.0a 0.3ab Karate 2.08CS 2.0 7.1ab 1.1a 1.8a 0.7ab Prevathon 0.43SC 17.5 2.0c 0.4a 0.2a 0.0b Tracer 4SC 3.5 1.6c 0.5a 1.6a 0.9ab Prevathon 0.43SC 14.0 2.6c 0.0a 0.6a 0.3ab Prevathon 0.43SC 20.0 2.2c 0.1a 0.2a 0.1b Belt 4SC 3.0 3.5bc 0.4a 0.4a 0.7ab Declare 1.25EC 1.54 7.3a 0.7a 3.6a 3.2a Fastac 0.83EC 0.83 3.8bc 1.1a 0.9a 0.2b Untreated Check - 9.1a 1.3a 2.2a 3.0a P>F <0.01 0.44 0.08 <0.01 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05). This study was supported by industry gifts of products and/or research funding. © The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/ licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com 2 Arthropod Management T ests, 2021, Vol. 46, No. 1 Table 2. Treatment/Formulation Rate/ acre Larvae per 25 plants Lint Yield oz form 4 DAT 13 DAT lb/acre Besiege 1.25SC 9.0 0.1b 0.0a 1,321.3a Karate 2.08CS 2.0 1.1ab 1.1a 1,152.7a Prevathon 0.43SC 17.5 0.3b 0.0a 1,309.2a Tracer 4SC 3.5 0.1b 0.0a 1,211.1a Prevathon 0.43SC 14.0 0.0b 0.3a 1,300.6a Prevathon 0.43SC 20.0 0.0b 0.0a 1,348.8a Belt 4SC 3.0 0.0b 0.1a 1,238.7a Declare 1.25EC 1.54 3.7a 2.1a 1,209.4a Fastac 0.83EC 0.83 0.3b 0.1a 1,280.0a Untreated Check - 1.4ab 1.2a 1,226.6a P>F <0.01 0.25 0.41 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05).

Journal

Arthropod Management TestsOxford University Press

Published: Feb 23, 2021

Keywords: Cotton (cottonseed) | Gossypium spp; Bollworm | Helicoverpa zea (Boddie); chlorantraniliprole; lambda-cyhalothrin; flubendiamide; spinosad; gamma-cyhalothrin; alpha-cypermethrin

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