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Impact of Early Season Insecticide Applications on Soybean Stand Establishment, 2020

Impact of Early Season Insecticide Applications on Soybean Stand Establishment, 2020 applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–1 doi: 10.1093/amt/tsab017 Section F: Field & Cereal Crops SOYBEAN: Glycine max L. (Merr.), ‘Asgrow 46X6’ Impact of Early Season Insecticide Applications on HeadA=HeadB=HeadA=HeadB/HeadA Soybean Stand Establishment, 2020 HeadB=HeadC=HeadB=HeadC/HeadB HeadC=HeadD=HeadC=HeadD/HeadC Donald R. Cook, Whitney Crow, Jeffrey Gore, and Meg Threet Extract3=HeadA=Extract1=HeadA Delta Research and Extension Center, Mississippi State University, Stoneville, MS 38776 and Corresponding author, e-mail: History=Text=History=Text_First dcook@drec.msstate.edu EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA Section Editor: Clyde Sorenson EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Soybean | Glycine max EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Southern corn rootworm | Diabrotica undecimpunctata howardi Barber EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA Pea leaf weevil | Sitona lineatus (L.) ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB The impact of selected early-season foliar insecticide treatments on Gaucho seed treatment resulted in greater plant density than the un- ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC soybean stand establishment was evaluated at the Delta Research and treated check and the foliar insecticide treatments. ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA Extension Center (Washington County). Soybean seed (Asgrow 46X6) were planted on a Commerce silty clay loam soil on 13 May at a seeding rate of 117,612 seed/acre. Emergence date for the trial was 21 May. Plot Table 1. size was four rows (40 in centers) by 40 feet. Treatments were replicated Treatment Rate per acre Application Plant density four times in an RCB. All seed received a fungicide seed treatment (fl oz. prod.) timing (Apron XL 3FS 0.105 fl oz/cwt and Maxim 4FS 0.115 fl oz / cwt). Foliar 26 DAE insecticide treatments were applied with a high clearance sprayer with a Untreated check - - 16,885b compressed air spray system calibrated to deliver 10 gpa through TX-6 hollow cone nozzles (2/row) at 3.5 mph. Foliar insecticide treatments Endigo ZCX 3.0 Pre-emerge 13,096b Brigade 2EC 4.27 Pre-emerge 8,888b were applied on 13 May (pre-emerge following planting), 21 May (at Endigo ZCX 3.0 Emergence 14,351b emergence), or on 26 May (7 days after emergence [DAE]). The Gaucho Brigade 2EC 4.27 Emergence 18,325b treatment was applied as a seed treatment at the commercial rate of Endigo ZCX 3.0 7 DAE 14,106b 2.5 oz form./cwt of seed. Plant density was determined at 26 DAE by Brigade 2EC 4.27 7 DAE 16,318b counting all plants on the two center rows of each plot. c a Gaucho 5FS 2.5 Seed Treatment 62,912a On 28 May, plants expressing damage symptomology were P>F <0.01 excavated to determine which insect(s) were present. Southern corn rootworm was the primary insect observed. Pea leaf weevil adults Means within columns followed by a common letter are not significantly dif- and feeding were observed but were not quantified. Data were ferent (FPLSD, P = 0.05). subjected to ANOVA and means separated according to Fisher’s fl oz per cwt. Pre-emerge  =  directly after planting, Emergence  =  >75% emergence, 7 Protected Least Significant Difference. DAE = 7 days after emergence. None of the foliar insecticide treatments resulted in greater DAE = Days after emergence. plant density compared to the untreated check at 26 DAE (Table 1). This research was supported in part by industry gifts of pesticides, seed, and/or research funding and by the Mississippi Soybean Promotion Board. © 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Impact of Early Season Insecticide Applications on Soybean Stand Establishment, 2020

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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/tsab017
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Abstract

applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–1 doi: 10.1093/amt/tsab017 Section F: Field & Cereal Crops SOYBEAN: Glycine max L. (Merr.), ‘Asgrow 46X6’ Impact of Early Season Insecticide Applications on HeadA=HeadB=HeadA=HeadB/HeadA Soybean Stand Establishment, 2020 HeadB=HeadC=HeadB=HeadC/HeadB HeadC=HeadD=HeadC=HeadD/HeadC Donald R. Cook, Whitney Crow, Jeffrey Gore, and Meg Threet Extract3=HeadA=Extract1=HeadA Delta Research and Extension Center, Mississippi State University, Stoneville, MS 38776 and Corresponding author, e-mail: History=Text=History=Text_First dcook@drec.msstate.edu EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA Section Editor: Clyde Sorenson EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Soybean | Glycine max EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Southern corn rootworm | Diabrotica undecimpunctata howardi Barber EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA Pea leaf weevil | Sitona lineatus (L.) ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB The impact of selected early-season foliar insecticide treatments on Gaucho seed treatment resulted in greater plant density than the un- ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC soybean stand establishment was evaluated at the Delta Research and treated check and the foliar insecticide treatments. ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA Extension Center (Washington County). Soybean seed (Asgrow 46X6) were planted on a Commerce silty clay loam soil on 13 May at a seeding rate of 117,612 seed/acre. Emergence date for the trial was 21 May. Plot Table 1. size was four rows (40 in centers) by 40 feet. Treatments were replicated Treatment Rate per acre Application Plant density four times in an RCB. All seed received a fungicide seed treatment (fl oz. prod.) timing (Apron XL 3FS 0.105 fl oz/cwt and Maxim 4FS 0.115 fl oz / cwt). Foliar 26 DAE insecticide treatments were applied with a high clearance sprayer with a Untreated check - - 16,885b compressed air spray system calibrated to deliver 10 gpa through TX-6 hollow cone nozzles (2/row) at 3.5 mph. Foliar insecticide treatments Endigo ZCX 3.0 Pre-emerge 13,096b Brigade 2EC 4.27 Pre-emerge 8,888b were applied on 13 May (pre-emerge following planting), 21 May (at Endigo ZCX 3.0 Emergence 14,351b emergence), or on 26 May (7 days after emergence [DAE]). The Gaucho Brigade 2EC 4.27 Emergence 18,325b treatment was applied as a seed treatment at the commercial rate of Endigo ZCX 3.0 7 DAE 14,106b 2.5 oz form./cwt of seed. Plant density was determined at 26 DAE by Brigade 2EC 4.27 7 DAE 16,318b counting all plants on the two center rows of each plot. c a Gaucho 5FS 2.5 Seed Treatment 62,912a On 28 May, plants expressing damage symptomology were P>F <0.01 excavated to determine which insect(s) were present. Southern corn rootworm was the primary insect observed. Pea leaf weevil adults Means within columns followed by a common letter are not significantly dif- and feeding were observed but were not quantified. Data were ferent (FPLSD, P = 0.05). subjected to ANOVA and means separated according to Fisher’s fl oz per cwt. Pre-emerge  =  directly after planting, Emergence  =  >75% emergence, 7 Protected Least Significant Difference. DAE = 7 days after emergence. None of the foliar insecticide treatments resulted in greater DAE = Days after emergence. plant density compared to the untreated check at 26 DAE (Table 1). This research was supported in part by industry gifts of pesticides, seed, and/or research funding and by the Mississippi Soybean Promotion Board. © 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

Journal

Arthropod Management TestsOxford University Press

Published: Feb 9, 2021

Keywords: Soybean | Glycine max; Southern corn rootworm | Diabrotica undecimpunctata howardi Barber; Pea leaf weevil | Sitona lineatu s (L.); lambda-cyhalothrin; thiamethoxam; bifenthrin; imidacloprid

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