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Efficacy of Foliar Applied Insecticides for Control of Blueberry Stem Gall Wasp, 2020

Efficacy of Foliar Applied Insecticides for Control of Blueberry Stem Gall Wasp, 2020 applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–2 doi: 10.1093/amt/tsab059 Section C: Small Fruits HIGHBUSH BLUEBERRY: Vaccinium corymbosum L., HeadA=HeadB=HeadA=HeadB/HeadA ‘Jersey’ HeadB=HeadC=HeadB=HeadC/HeadB HeadC=HeadD=HeadC=HeadD/HeadC Efficacy of Foliar Applied Insecticides for Control of Extract3=HeadA=Extract1=HeadA History=Text=History=Text_First Blueberry Stem Gall Wasp, 2020 EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA Jacquelyn A. Perkins, Henry Pointon, and Rufus Isaacs EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC 1 Department of Entomology, Michigan State University, East Lansing, MI 48824 and Corresponding author, e-mail: isaacsr@msu.edu EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Section Editor: John Wise ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA Blueberry | Vaccinium spp. ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Blueberry stem gall wasp (BSGW) | Hemadas nubilipennis (Ashmead) ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA The objective of the study was to evaluate the efficacy of foliar- followed by post-hoc means separation test. An alpha value of 0.05 applied insecticides for control of blueberry stem gall wasp (BSGW). was used for all statistical analyses. Treatments were made to a renovated ‘Jersey’ cultivar planting with Spray programs containing a combination of Lannate and Imidan vigorous new growth in Stanton, MI. Four replicates of each insec- had the lowest average number of total galls per bush, followed by ticide treatment and the untreated control plots were used, each Verdepryn applied twice (Table 1). These same treatments had sig- seven bushes long and one row wide. All treatments were applied nificantly fewer galls than the untreated check (F = 7.72, df = 7,88, using a CO -powered backpack sprayer operating at 55 PSI, using P  <  0.0001). A  tank-mix of Lannate and Imidan applied immedi- a single head boom and a TeeJet 8003VS spray nozzle. The spray ately post-bloom was just as effective at reducing overall gall count solutions were applied to both sides of the plots at an equivalent as applying the two products separately (Lannate immediately post- to a rate of 100 gal/acre. First applications of the Movento treat- bloom then Imidan 7 d later). Verdepryn applied twice post-bloom ment included LI700 as a penetrant to ensure the insecticide moved was one of the most effective treatments at reducing large galls, with into the plant tissues. Post-season counts of fully mature galls on the an average of only 0.2 large galls per bush. All treatments signifi- middle five bushes of each plot were made in early December 2020. cantly reduced the average number of large galls per bush compared Galls were categorized as either small (less than 1 cm diameter), me- to the untreated check, with the exception of Movento applied im- dium (1–3 cm) or large (>3 cm). Data were analyzed using ANOVA, mediately post-bloom (F = 5.22, df = 7, 88, P < 0.0001). This research was supported by industry gifts of pesticides and funding from grower organizations. © 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 (https://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. Treatment Rate per acre 1st application date 2nd application date Avg. small galls Avg. medium Avg. large galls Avg. total per bush galls per bush per bush galls per bush Untreated - - 17.2bc 24.3a 3.0a 44.5a Lannate 48 oz 11 Jun 2020 (Lannate) 18 Jun 2020 (Mustang 19.4ac 7.9cb 1.3b 28.6ab Mustang Maxx Maxx) Lannate 48 oz 11 Jun 2020 (Lannate) 18 Jun 2020 (Imidan) 13.4c 5.7cb 0.4b 19.5b Imidan 1.33 lb Lannate + 48 oz + 11 Jun 2020 - 12.4c 6.8cb 0.7b 19.8b Imidan 1.33 Verdepryn 11 oz 11 Jun 2020 18 Jun 2020 18.3ac 3.5c 0.2b 21.9b Verdepryn 11 oz 11 Jun 2020 (Verdepryn) 18 Jun 2020 23.9ac 10.4cb 0.7b 35.0ab Mustang Maxx 4 oz (Mustang Maxx) Verdepryn 11 oz 11 Jun 2020 (Verdepryn) 18 Jun 2020 29.8a 11.9 b 0.7b 42.3a Movento + 10 oz + (Movento + LI700) LI700 1% v/v Movento + 10 oz + 11 Jun 2020 (Movento + - 26.3ab 11.9b 1.4ab 39.6a LI700 1% v/v LI700) F 5.3 11.4 5.2 7.7 P <0.0001 <0.0001 <0.0001 <0.0001 Means within columns followed by the same letter are not significantly different (P < 0.05). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Efficacy of Foliar Applied Insecticides for Control of Blueberry Stem Gall Wasp, 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.
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2155-9856
DOI
10.1093/amt/tsab059
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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/tsab059 Section C: Small Fruits HIGHBUSH BLUEBERRY: Vaccinium corymbosum L., HeadA=HeadB=HeadA=HeadB/HeadA ‘Jersey’ HeadB=HeadC=HeadB=HeadC/HeadB HeadC=HeadD=HeadC=HeadD/HeadC Efficacy of Foliar Applied Insecticides for Control of Extract3=HeadA=Extract1=HeadA History=Text=History=Text_First Blueberry Stem Gall Wasp, 2020 EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA Jacquelyn A. Perkins, Henry Pointon, and Rufus Isaacs EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC 1 Department of Entomology, Michigan State University, East Lansing, MI 48824 and Corresponding author, e-mail: isaacsr@msu.edu EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Section Editor: John Wise ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA Blueberry | Vaccinium spp. ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Blueberry stem gall wasp (BSGW) | Hemadas nubilipennis (Ashmead) ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA The objective of the study was to evaluate the efficacy of foliar- followed by post-hoc means separation test. An alpha value of 0.05 applied insecticides for control of blueberry stem gall wasp (BSGW). was used for all statistical analyses. Treatments were made to a renovated ‘Jersey’ cultivar planting with Spray programs containing a combination of Lannate and Imidan vigorous new growth in Stanton, MI. Four replicates of each insec- had the lowest average number of total galls per bush, followed by ticide treatment and the untreated control plots were used, each Verdepryn applied twice (Table 1). These same treatments had sig- seven bushes long and one row wide. All treatments were applied nificantly fewer galls than the untreated check (F = 7.72, df = 7,88, using a CO -powered backpack sprayer operating at 55 PSI, using P  <  0.0001). A  tank-mix of Lannate and Imidan applied immedi- a single head boom and a TeeJet 8003VS spray nozzle. The spray ately post-bloom was just as effective at reducing overall gall count solutions were applied to both sides of the plots at an equivalent as applying the two products separately (Lannate immediately post- to a rate of 100 gal/acre. First applications of the Movento treat- bloom then Imidan 7 d later). Verdepryn applied twice post-bloom ment included LI700 as a penetrant to ensure the insecticide moved was one of the most effective treatments at reducing large galls, with into the plant tissues. Post-season counts of fully mature galls on the an average of only 0.2 large galls per bush. All treatments signifi- middle five bushes of each plot were made in early December 2020. cantly reduced the average number of large galls per bush compared Galls were categorized as either small (less than 1 cm diameter), me- to the untreated check, with the exception of Movento applied im- dium (1–3 cm) or large (>3 cm). Data were analyzed using ANOVA, mediately post-bloom (F = 5.22, df = 7, 88, P < 0.0001). This research was supported by industry gifts of pesticides and funding from grower organizations. © 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 (https://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. Treatment Rate per acre 1st application date 2nd application date Avg. small galls Avg. medium Avg. large galls Avg. total per bush galls per bush per bush galls per bush Untreated - - 17.2bc 24.3a 3.0a 44.5a Lannate 48 oz 11 Jun 2020 (Lannate) 18 Jun 2020 (Mustang 19.4ac 7.9cb 1.3b 28.6ab Mustang Maxx Maxx) Lannate 48 oz 11 Jun 2020 (Lannate) 18 Jun 2020 (Imidan) 13.4c 5.7cb 0.4b 19.5b Imidan 1.33 lb Lannate + 48 oz + 11 Jun 2020 - 12.4c 6.8cb 0.7b 19.8b Imidan 1.33 Verdepryn 11 oz 11 Jun 2020 18 Jun 2020 18.3ac 3.5c 0.2b 21.9b Verdepryn 11 oz 11 Jun 2020 (Verdepryn) 18 Jun 2020 23.9ac 10.4cb 0.7b 35.0ab Mustang Maxx 4 oz (Mustang Maxx) Verdepryn 11 oz 11 Jun 2020 (Verdepryn) 18 Jun 2020 29.8a 11.9 b 0.7b 42.3a Movento + 10 oz + (Movento + LI700) LI700 1% v/v Movento + 10 oz + 11 Jun 2020 (Movento + - 26.3ab 11.9b 1.4ab 39.6a LI700 1% v/v LI700) F 5.3 11.4 5.2 7.7 P <0.0001 <0.0001 <0.0001 <0.0001 Means within columns followed by the same letter are not significantly different (P < 0.05).

Journal

Arthropod Management TestsOxford University Press

Published: Oct 19, 2021

Keywords: Blueberry | Vaccinium spp; Blueberry stem gall wasp (BSGW) | Hemadas nubilipennis (Ashmead); methomyl; phosmet; cyclaniliprole; spirotetramat; zeta-cypermethrin

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