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Laboratory Bioassay of Insecticide-Treated Fertilizer Applied In-Furrow at Planting Against the Fall Armyworm in Wheat, 2020

Laboratory Bioassay of Insecticide-Treated Fertilizer Applied In-Furrow at Planting Against the... applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–2 doi: 10.1093/amt/tsab027 Section L: Laboratory Bioassays WHEAT: Triticum aestivum L. ‘West Bred 4515’ HeadA=HeadB=HeadA=HeadB/HeadA HeadB=HeadC=HeadB=HeadC/HeadB Laboratory Bioassay of Insecticide-Treated Fertilizer HeadC=HeadD=HeadC=HeadD/HeadC Extract3=HeadA=Extract1=HeadA Applied In-Furrow at Planting Against the Fall Armyworm History=Text=History=Text_First in Wheat, 2020 EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Ali A. Zarrabi, T om A. Royer, George B. Wallace, Kristopher L. Giles, and EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Natalie L. Harrison EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078-3033, USA and Corresponding ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA author, e-mail: ali.zarrabi@okstate.edu ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Section Editor: Donald Cook ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC Wheat | Triticum aestivum ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA Fall armyworm | Spodoptera frugiperda A growth chamber trial was conducted to evaluate the efficacy of an RCB design with 20 replications, each pot representing one rep- an in-furrow application of a granule fertilizer (monoammonium lication for each treatment and on each run, respectively. Each pot phosphate [MAP] 11-52-0) impregnated with chlorantraniliprole was examined for live FAW larvae 2 wk following infestation for (Prevathon) for control of fall armyworm in wheat. Winter wheat residual activity. Insect mortality was determined by rating larval variety ‘WB 4515’ was sown in plastic pots (15 cm dia) and held condition: Dead (1 = no movement, larvae is shrunken and dark), in a greenhouse insect free. There were two treatments: untreated Live (0 = activity normal, larvae could right itself when flipped on fertilizer and the same fertilizer impregnated with Prevathon at its back). Percentage damage was estimated on the entire plant sur- 0.00094 lb ai per lb of fertilizer. Based on the surface area of the face area by examining the entire plant surface area and recorded pot (177 cm ), each pot received 0.102 g (0.004 oz) fertilizer, which between 0 and 100, respectively (Table 1). resulted in an effective application rate of MAP at 50 lb/A and Prevathon-treated fertilizer resulted in significantly higher Prevathon at 0.047 lb ai/A. There was only one seedling in each FAW % mortality compared with the untreated check at 2 and pot, and each wheat plant was infested manually with one second- 4 WAE. However, no significant differences were observed at 8 instar Fall Armyworm (FAW) at 2, 4, and 8  wk after seedling WAE. Additionally, untreated plants showed significantly higher % emergence (WAE), respectively. Following infestation, cups were damage up to 8 WAE. The lower damage in the Prevathon treatment covered with clear plastic cylinders (13  cm dia × 40  cm h) with corresponded to our observation that although FAW larvae were still mesh-covered holes to prevent larvae escape and held in a growth alive at 8 WAE in the Prevathon-treated pots, the larvae were visibly chamber (17 ± 1°C, 12:12 [LD]). The treatments were arranged in smaller. This research was funded with support from the U.S. Department of Agriculture NIFA’s Extension Implementation Program (grant 2017-7006-27282/project accession no. 1014126). © 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 1. % FAW mortality % Damage Treatment/formulation Rate/acre 2 WAE 4 WAE 8 WAE 2 WAE 4 WAE 8 WAE a b MAP 11-52-0 50.0 5a 10a 25a 53.3a 50.5a 45.5a a b c MAP 11-52-0 + Prevathon 0.43SC 50.0 + 0.047 85b 85b 45a 11.4b 9.8b 29.8b P>F <0.0001 <0.0001 0.2583 <0.0001 <0.0001 0.0242 Means within columns followed by a common letter are not significantly different (Fisher’s protected LSD, P ≤ 0.05). Monoammonium phosphate fertilizer, analysis 11-52-0. lb product per acre. lb AI per acre. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Laboratory Bioassay of Insecticide-Treated Fertilizer Applied In-Furrow at Planting Against the Fall Armyworm in Wheat, 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/tsab027
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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/tsab027 Section L: Laboratory Bioassays WHEAT: Triticum aestivum L. ‘West Bred 4515’ HeadA=HeadB=HeadA=HeadB/HeadA HeadB=HeadC=HeadB=HeadC/HeadB Laboratory Bioassay of Insecticide-Treated Fertilizer HeadC=HeadD=HeadC=HeadD/HeadC Extract3=HeadA=Extract1=HeadA Applied In-Furrow at Planting Against the Fall Armyworm History=Text=History=Text_First in Wheat, 2020 EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Ali A. Zarrabi, T om A. Royer, George B. Wallace, Kristopher L. Giles, and EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Natalie L. Harrison EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078-3033, USA and Corresponding ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA author, e-mail: ali.zarrabi@okstate.edu ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Section Editor: Donald Cook ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC Wheat | Triticum aestivum ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA Fall armyworm | Spodoptera frugiperda A growth chamber trial was conducted to evaluate the efficacy of an RCB design with 20 replications, each pot representing one rep- an in-furrow application of a granule fertilizer (monoammonium lication for each treatment and on each run, respectively. Each pot phosphate [MAP] 11-52-0) impregnated with chlorantraniliprole was examined for live FAW larvae 2 wk following infestation for (Prevathon) for control of fall armyworm in wheat. Winter wheat residual activity. Insect mortality was determined by rating larval variety ‘WB 4515’ was sown in plastic pots (15 cm dia) and held condition: Dead (1 = no movement, larvae is shrunken and dark), in a greenhouse insect free. There were two treatments: untreated Live (0 = activity normal, larvae could right itself when flipped on fertilizer and the same fertilizer impregnated with Prevathon at its back). Percentage damage was estimated on the entire plant sur- 0.00094 lb ai per lb of fertilizer. Based on the surface area of the face area by examining the entire plant surface area and recorded pot (177 cm ), each pot received 0.102 g (0.004 oz) fertilizer, which between 0 and 100, respectively (Table 1). resulted in an effective application rate of MAP at 50 lb/A and Prevathon-treated fertilizer resulted in significantly higher Prevathon at 0.047 lb ai/A. There was only one seedling in each FAW % mortality compared with the untreated check at 2 and pot, and each wheat plant was infested manually with one second- 4 WAE. However, no significant differences were observed at 8 instar Fall Armyworm (FAW) at 2, 4, and 8  wk after seedling WAE. Additionally, untreated plants showed significantly higher % emergence (WAE), respectively. Following infestation, cups were damage up to 8 WAE. The lower damage in the Prevathon treatment covered with clear plastic cylinders (13  cm dia × 40  cm h) with corresponded to our observation that although FAW larvae were still mesh-covered holes to prevent larvae escape and held in a growth alive at 8 WAE in the Prevathon-treated pots, the larvae were visibly chamber (17 ± 1°C, 12:12 [LD]). The treatments were arranged in smaller. This research was funded with support from the U.S. Department of Agriculture NIFA’s Extension Implementation Program (grant 2017-7006-27282/project accession no. 1014126). © 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 1. % FAW mortality % Damage Treatment/formulation Rate/acre 2 WAE 4 WAE 8 WAE 2 WAE 4 WAE 8 WAE a b MAP 11-52-0 50.0 5a 10a 25a 53.3a 50.5a 45.5a a b c MAP 11-52-0 + Prevathon 0.43SC 50.0 + 0.047 85b 85b 45a 11.4b 9.8b 29.8b P>F <0.0001 <0.0001 0.2583 <0.0001 <0.0001 0.0242 Means within columns followed by a common letter are not significantly different (Fisher’s protected LSD, P ≤ 0.05). Monoammonium phosphate fertilizer, analysis 11-52-0. lb product per acre. lb AI per acre.

Journal

Arthropod Management TestsOxford University Press

Published: Mar 17, 2021

Keywords: Wheat | Triticum aestivum; Fall armyworm | Spodoptera frugiperda; chlorantraniliprole

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