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Foliar Applications of an Experimental Biopesticide and Labeled Insecticides for Control of Pickleworm on Zucchini Squash, 2022

Foliar Applications of an Experimental Biopesticide and Labeled Insecticides for Control of... Yellow squash fruit | Cucurbita pepo Pickleworm | Diaphania nitidalis (Stoll) chlorantraniliprole, cyantraniliprole, indoxacarb, spinetoram, Burkholderia spp, methoxyfenozide Pickleworm can be a serious pest of squash causing loss of fruit quality and yield by feeding on the flowers and burrowing into the fruit. For this trial, two raised beds 32 inches wide on 6-ft centers 410 ft long and covered with white-on-black polyethylene film were established at the Southwest Florida Research and Education Center in Immokalee, FL. Plants were manually seeded at 24-inch spacing on 15 Mar. Plots were assigned in an RCB design with four replications and five treatments plus an untreated check with 14 plants in each plot and three plants between each plot acting as a spray buffer and pest reservoir. Foliar treatments were applied 27 Apr and 4 and 11 May with a high clearance sprayer operating at 180 psi and 2.3 mph with delivery through two vertical booms, each equipped with yellow Albuz hollow cone nozzles emitting a total of 60 gpa (six nozzles). All fruit was harvested from six plants in each plot on 2, 9, and 16 May. Collected fruit was weighed and then separated into two categories: fruit with and without visible damage. The three harvest dates were combined, and the data were subjected to one-way ANOVA and means separated using LSD (P = 0.05). All products tested were able to decrease the number and percentage of damaged fruit found when compared to the untreated check while also increasing the number of marketable fruit (Table 1). The labeled pesticides did have lower numbers and percentages of damaged fruit when compared to the experimental biopesticide but no statistical differences were found in the number of marketable fruit found among the treatments. Table 1. Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Means within columns followed by same letter are not statistically different (LSD, P > 0.05). Open in new tab Table 1. Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Means within columns followed by same letter are not statistically different (LSD, P > 0.05). Open in new tab No phytotoxicity was observed.1 Footnotes 1 This research was partially supported by industry gifts of pesticide and funds. © The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. 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 [email protected] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Foliar Applications of an Experimental Biopesticide and Labeled Insecticides for Control of Pickleworm on Zucchini Squash, 2022

Qureshi, Jawwad; Kostyk, Barry C
Arthropod Management Tests , Volume 48 (1): 1 – Dec 31, 2022
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Publisher
Oxford University Press
Copyright
© The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America.
eISSN
2155-9856
DOI
10.1093/amt/tsac143
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Abstract

Yellow squash fruit | Cucurbita pepo Pickleworm | Diaphania nitidalis (Stoll) chlorantraniliprole, cyantraniliprole, indoxacarb, spinetoram, Burkholderia spp, methoxyfenozide Pickleworm can be a serious pest of squash causing loss of fruit quality and yield by feeding on the flowers and burrowing into the fruit. For this trial, two raised beds 32 inches wide on 6-ft centers 410 ft long and covered with white-on-black polyethylene film were established at the Southwest Florida Research and Education Center in Immokalee, FL. Plants were manually seeded at 24-inch spacing on 15 Mar. Plots were assigned in an RCB design with four replications and five treatments plus an untreated check with 14 plants in each plot and three plants between each plot acting as a spray buffer and pest reservoir. Foliar treatments were applied 27 Apr and 4 and 11 May with a high clearance sprayer operating at 180 psi and 2.3 mph with delivery through two vertical booms, each equipped with yellow Albuz hollow cone nozzles emitting a total of 60 gpa (six nozzles). All fruit was harvested from six plants in each plot on 2, 9, and 16 May. Collected fruit was weighed and then separated into two categories: fruit with and without visible damage. The three harvest dates were combined, and the data were subjected to one-way ANOVA and means separated using LSD (P = 0.05). All products tested were able to decrease the number and percentage of damaged fruit found when compared to the untreated check while also increasing the number of marketable fruit (Table 1). The labeled pesticides did have lower numbers and percentages of damaged fruit when compared to the experimental biopesticide but no statistical differences were found in the number of marketable fruit found among the treatments. Table 1. Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Means within columns followed by same letter are not statistically different (LSD, P > 0.05). Open in new tab Table 1. Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Treatment/formulation . Rate/acre . . . . Total fruit from three harvests (2, 9, and 16 May) . . V:V% . Application dates . Marketable (no.) . Damaged (no.) . Percent damaged . . . 27 Apr . 4 May . 11 May . . . . Untreated check 14.63b 13.50a 50.96a Coragen 20 SC 5 fl oz x x x 35.50a 2.63c 6.11c Dyneamic 0.13% x x x Exirel 10 SE 13.5 fl oz x x x 33.63a 4.50c 10.80c Dyneamic 0.13% x x x Avaunt eVo 3.5 oz x x x 31.50a 4.00c 10.84c Dyneamic 0.13% x x x Radiant SC 10 fl oz x x Intrepid 2F 10 fl oz x 31.00a 2.63c 7.95c Dyneamic 0.13% x x x MBI 306 20 fl oz x x x 25.88a 7.75b 23.04b NuFilm 0.25% x x x Means within columns followed by same letter are not statistically different (LSD, P > 0.05). Open in new tab No phytotoxicity was observed.1 Footnotes 1 This research was partially supported by industry gifts of pesticide and funds. © The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. 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 [email protected]

Journal

Arthropod Management Tests – Oxford University Press

Published: Dec 31, 2022

Keywords: Yellow squash fruit | Cucurbita pepo; Pickleworm | Diaphania nitidalis (Stoll); chlorantraniliprole; cyantraniliprole; indoxacarb; spinetoram; Burkholderia spp; methoxyfenozide

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