Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Comparison of In-Furrow Applied Insecticide Efficacy on Corn Rootworms, 2018

Comparison of In-Furrow Applied Insecticide Efficacy on Corn Rootworms, 2018 applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–2 doi: 10.1093/amt/tsab032 Section F: Field & Cereal Crops CORN: Zea mays L. ‘Pioneer9188AM and 9284AM’ HeadA=HeadB=HeadA=HeadB/HeadA HeadB=HeadC=HeadB=HeadC/HeadB Comparison of In-Furrow Applied Insecticide Efficacy on HeadC=HeadD=HeadC=HeadD/HeadC Extract3=HeadA=Extract1=HeadA Corn Rootworms, 2018 History=Text=History=Text_First Bradley L. McManus and Billy W. Fuller EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Department of Agronomy, Horticulture, and Plant Science, South Dakota State University, Brookings, SD 57007, USA and Corresponding author, e-mail: Bradley.McManus@sdstate.edu EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Section Editor: Donald Cook ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA Corn | Zea mays ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Western corn rootworm | Diabrotica virgifera ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC Northern corn rootworm | Diabrotica barberi ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA Corn rootworm (NCR/WCR) management efficacy trials were stage R1. Roots were washed then rated for severity of root- conducted to evaluate insecticide treatments near Cavour and worm feeding injury using the Oleson 0–3 root injury scale. Yield Bryant, SD. Experimental plots were arranged in an RCBD with assessments in bushels per acre were taken from the center two four replications. Plot size was four rows by 46 feet at Cavour and rows (Cavour 17 October and Bryant 29 October). Yield and root by 48 feet at Bryant spaced 30  inches apart. Plots were planted rating data were analyzed using PROC MIXED/PDIFF option on 9 May Cavour and 15 May at Bryant with a planting rate with Saxton’s lettering macro in SAS (version 9.2). of 30,800 kernels per acre. The non-rootworm resistant hybrid Corn root injury from rootworms in the untreated check evaluated in this efficacy trial at Cavour (Pioneer 9188AM) and exceeded the 0.25 economic injury level (EIL) at both Cavour (1.85) Bryant (Pioneer 9284AM). Granular Force3G insecticide was ap- and Bryant (1.61) (Tables 1 and 2). Damage to corn roots from root- plied with the SmartBox delivery system. This meter was adapted worm larval feeding exceeded the 0.25 EIL in the Coragen-treated to fit a small bottle that was attached to a plate on the lower end plots (both 0.098 and 0.196 pounds of active ingredient per acre, of unit to allow it to fit the Noble meter unit mounting brackets LB AI/A, rates) at the Cavour (0.35 and 0.46) and Bryant (0.28 and on a four-row Kinze corn planter. Planting-time liquid insecticides 0.68) fields. Also at Cavour, the higher rate of Verimark did not pre- were applied at 5 gallons per acre to each row with a compressed vent root injury from exceeding 0.25 EIL (0.55). At the Cavour lo- air delivery system and a solid stream spray nozzle. The SmartBox cation, there were no differences among treatments for plant stand meters and liquid application equipment were calibrated before density, percent plant lodging at either sample date, or yield (Table 1). treatment application. In-furrow treatments were placed directly All of the insecticide treatments reduced root injury compared to the into the open seed furrow between double-disk openers. Plant untreated check. At the Bryant location, there were no differences stand counts (7 June Cavour and Bryant) and lodging data (22 among treatments for plant stand density, percent plant lodging August) were collected from the center two rows of each plot. at the first sample date, or yield (Table 2). All of the insecticides Stand was determined by counting the number of plants in 17.5 reduced root injury compared with the untreated check. Also, the feet of row (1/1,000th of an acre), and percent lodging was the Coragen-treated plots (0.098 LB AI/A) had more root injury than total number of plants in the row that were at a 30-degree or plots that received any of the other insecticide treatments. All of the greater angle divided by the total number of plants in row. Root insecticide treatments reduced percent lodged plants at the harvest rating (Cavour 18 July and Bryant 25 July) means were derived sample timing. Also, Force resulted in less-lodged plants than the from six roots dug randomly from the two outer rows at growth Coragen-treated plots (0.098 LB AI/A). A portion of this research was supported by USDA–NIFA and industry funds. © 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. Late season Harvest Treatment/formulation Rate/acre Plants per acre Root rating % lodged plants % lodged plants Yield (bu/acre) Coragen 1.67SC 0.098 28,750a 0.35b 4.13a 14.75a 122.8a Coragen 1.67SC 0.196 27,630a 0.46b 9.80a 0.25a 128.9a Verimark 1.67SC 0.176 26,750a 0.23b 2.45a 30.25a 114.6a Verimark 1.67SC 0.260 28,630a 0.55b 2.96a 2.13a 126.4a Ethos XB 1.5SC 0.100 28,250a 0.11b 1.86a 0.75a 131.5a Capture LFR 1.5SC 0.100 30,250a 0.22b 0.79a 18.25a 124.5a Force 3G 0.600 28,250a 0.13b 1.88a 13.00a 122.8a Untreated check — 29,380a 1.85a 6.42a 17.75a 117.8a P > F 0.1342 0.0040 0.4528 0.2760 0.1983 Means within columns followed by the same letter are not significantly different; P > 0.05. In-furrow liquid spray application delivered by solid stream spray nozzle = pounds of active ingredient per acre (LB AI/A). SmartBox granular delivery system in-furrow application = pounds of active ingredient per acre (LB AI/A). Table 2. Late season Harvest Treatment/formulation Rate/acre Plants per acre Root rating % lodged plants %lodged plants Yield (bu/acre) Coragen 1.67SC 0.098 28,380a 0.68b 5.50a 7.38b 218.0a Coragen 1.67SC 0.196 27,380a 0.28c 0.98a 2.88bc 216.0a Verimark 1.67SC 0.176 29,500a 0.24c 0.37a 2.13bc 220.1a Verimark 1.67SC 0.260 28,500a 0.16c 2.03a 5.88bc 216.2a Ethos XB 1.5SC 0.100 26,130a 0.07c 1.97a 1.63bc 226.3a Capture LFR 1.5SC 0.100 26,000a 0.09c 3.61a 1.25bc 218.7a Force 3G 0.600 26,880a 0.07c 0.00a 0.75c 220.4a Untreated check — 29,250a 1.61a 4.80a 14.75a 215.1a P > F 0.3167 0.0001 0.6187 0.0018 0.5867 Means within columns followed by the same letter are not significantly different; P > 0.05. In-furrow liquid spray application delivered by solid stream spray nozzle = pounds of active ingredient per acre (LB AI/A). SmartBox granular delivery system in-furrow application = pounds of active ingredient per acre (LB AI/A). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Comparison of In-Furrow Applied Insecticide Efficacy on Corn Rootworms, 2018

Arthropod Management Tests , Volume 46 (1): 1 – Mar 4, 2021

Loading next page...
 
/lp/oxford-university-press/comparison-of-in-furrow-applied-insecticide-efficacy-on-corn-rootworms-JSvpI0zPH2

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
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/tsab032
Publisher site
See Article on Publisher Site

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/tsab032 Section F: Field & Cereal Crops CORN: Zea mays L. ‘Pioneer9188AM and 9284AM’ HeadA=HeadB=HeadA=HeadB/HeadA HeadB=HeadC=HeadB=HeadC/HeadB Comparison of In-Furrow Applied Insecticide Efficacy on HeadC=HeadD=HeadC=HeadD/HeadC Extract3=HeadA=Extract1=HeadA Corn Rootworms, 2018 History=Text=History=Text_First Bradley L. McManus and Billy W. Fuller EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Department of Agronomy, Horticulture, and Plant Science, South Dakota State University, Brookings, SD 57007, USA and Corresponding author, e-mail: Bradley.McManus@sdstate.edu EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Section Editor: Donald Cook ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA Corn | Zea mays ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Western corn rootworm | Diabrotica virgifera ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC Northern corn rootworm | Diabrotica barberi ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA Corn rootworm (NCR/WCR) management efficacy trials were stage R1. Roots were washed then rated for severity of root- conducted to evaluate insecticide treatments near Cavour and worm feeding injury using the Oleson 0–3 root injury scale. Yield Bryant, SD. Experimental plots were arranged in an RCBD with assessments in bushels per acre were taken from the center two four replications. Plot size was four rows by 46 feet at Cavour and rows (Cavour 17 October and Bryant 29 October). Yield and root by 48 feet at Bryant spaced 30  inches apart. Plots were planted rating data were analyzed using PROC MIXED/PDIFF option on 9 May Cavour and 15 May at Bryant with a planting rate with Saxton’s lettering macro in SAS (version 9.2). of 30,800 kernels per acre. The non-rootworm resistant hybrid Corn root injury from rootworms in the untreated check evaluated in this efficacy trial at Cavour (Pioneer 9188AM) and exceeded the 0.25 economic injury level (EIL) at both Cavour (1.85) Bryant (Pioneer 9284AM). Granular Force3G insecticide was ap- and Bryant (1.61) (Tables 1 and 2). Damage to corn roots from root- plied with the SmartBox delivery system. This meter was adapted worm larval feeding exceeded the 0.25 EIL in the Coragen-treated to fit a small bottle that was attached to a plate on the lower end plots (both 0.098 and 0.196 pounds of active ingredient per acre, of unit to allow it to fit the Noble meter unit mounting brackets LB AI/A, rates) at the Cavour (0.35 and 0.46) and Bryant (0.28 and on a four-row Kinze corn planter. Planting-time liquid insecticides 0.68) fields. Also at Cavour, the higher rate of Verimark did not pre- were applied at 5 gallons per acre to each row with a compressed vent root injury from exceeding 0.25 EIL (0.55). At the Cavour lo- air delivery system and a solid stream spray nozzle. The SmartBox cation, there were no differences among treatments for plant stand meters and liquid application equipment were calibrated before density, percent plant lodging at either sample date, or yield (Table 1). treatment application. In-furrow treatments were placed directly All of the insecticide treatments reduced root injury compared to the into the open seed furrow between double-disk openers. Plant untreated check. At the Bryant location, there were no differences stand counts (7 June Cavour and Bryant) and lodging data (22 among treatments for plant stand density, percent plant lodging August) were collected from the center two rows of each plot. at the first sample date, or yield (Table 2). All of the insecticides Stand was determined by counting the number of plants in 17.5 reduced root injury compared with the untreated check. Also, the feet of row (1/1,000th of an acre), and percent lodging was the Coragen-treated plots (0.098 LB AI/A) had more root injury than total number of plants in the row that were at a 30-degree or plots that received any of the other insecticide treatments. All of the greater angle divided by the total number of plants in row. Root insecticide treatments reduced percent lodged plants at the harvest rating (Cavour 18 July and Bryant 25 July) means were derived sample timing. Also, Force resulted in less-lodged plants than the from six roots dug randomly from the two outer rows at growth Coragen-treated plots (0.098 LB AI/A). A portion of this research was supported by USDA–NIFA and industry funds. © 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. Late season Harvest Treatment/formulation Rate/acre Plants per acre Root rating % lodged plants % lodged plants Yield (bu/acre) Coragen 1.67SC 0.098 28,750a 0.35b 4.13a 14.75a 122.8a Coragen 1.67SC 0.196 27,630a 0.46b 9.80a 0.25a 128.9a Verimark 1.67SC 0.176 26,750a 0.23b 2.45a 30.25a 114.6a Verimark 1.67SC 0.260 28,630a 0.55b 2.96a 2.13a 126.4a Ethos XB 1.5SC 0.100 28,250a 0.11b 1.86a 0.75a 131.5a Capture LFR 1.5SC 0.100 30,250a 0.22b 0.79a 18.25a 124.5a Force 3G 0.600 28,250a 0.13b 1.88a 13.00a 122.8a Untreated check — 29,380a 1.85a 6.42a 17.75a 117.8a P > F 0.1342 0.0040 0.4528 0.2760 0.1983 Means within columns followed by the same letter are not significantly different; P > 0.05. In-furrow liquid spray application delivered by solid stream spray nozzle = pounds of active ingredient per acre (LB AI/A). SmartBox granular delivery system in-furrow application = pounds of active ingredient per acre (LB AI/A). Table 2. Late season Harvest Treatment/formulation Rate/acre Plants per acre Root rating % lodged plants %lodged plants Yield (bu/acre) Coragen 1.67SC 0.098 28,380a 0.68b 5.50a 7.38b 218.0a Coragen 1.67SC 0.196 27,380a 0.28c 0.98a 2.88bc 216.0a Verimark 1.67SC 0.176 29,500a 0.24c 0.37a 2.13bc 220.1a Verimark 1.67SC 0.260 28,500a 0.16c 2.03a 5.88bc 216.2a Ethos XB 1.5SC 0.100 26,130a 0.07c 1.97a 1.63bc 226.3a Capture LFR 1.5SC 0.100 26,000a 0.09c 3.61a 1.25bc 218.7a Force 3G 0.600 26,880a 0.07c 0.00a 0.75c 220.4a Untreated check — 29,250a 1.61a 4.80a 14.75a 215.1a P > F 0.3167 0.0001 0.6187 0.0018 0.5867 Means within columns followed by the same letter are not significantly different; P > 0.05. In-furrow liquid spray application delivered by solid stream spray nozzle = pounds of active ingredient per acre (LB AI/A). SmartBox granular delivery system in-furrow application = pounds of active ingredient per acre (LB AI/A).

Journal

Arthropod Management TestsOxford University Press

Published: Mar 4, 2021

Keywords: Corn | Zea mays; Western corn rootworm | Diabrotica virgifera; Northern corn rootworm | Diabrotica barberi; chlorantraniliprole; cyantraniliprole; bifenthrin; tefluthrin

There are no references for this article.