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Control of Rosy Apple Aphid, 2021

Control of Rosy Apple Aphid, 2021 Apple | Malus domestica Rosy apple aphid (RAA) | Dysaphis plantaginea (Passerini) flupyradifurone This trial was conducted to evaluate the efficacy of Sivanto Prime with two different classes of adjuvants for the control of RAA. Three tree plots arranged in a RCB design were established in a 10-yr-old ‘Crimson Gold’ (Blue Block) apple planting (14 × 6 ft spacing) located at the Trevor Nichols Research Center. Test materials were applied with an FMC 1029 airblast sprayer calibrated to deliver 100 gpa at 2.5 mph. Regular maintenance foliar applications were applied to all treatments including Captan 80WDG, Imidan 70WP, Indar 2F, Inspire Super 2.82EW, Manzate Pro-Stik 75WDG, and Merivon 4.17SC. In addition, Alion 1.67SC and glyphosate were banded below the trees for weed control. Treatments were applied 14 May as indicated (Table 1). RAA evaluations were made by inspecting shoots for 2 min and recording the number of live colonies. RAA evaluations occurred on 14 May (pre-treatment count), 17 May, 24 May, 1 Jun, and 7 Jun with mean live colonies reported (Table 1). Although non-transformed means are presented, ANOVA was run on square-root transformed data. Transformed treatment means were analyzed using ANOVA and means separation by Tukey’s HSD at P < 0.05. Table 1. Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Means followed by the same letter do not significantly differ (P ≤ 0.05, Tukey’s HSD). ANOVA performed on square-root transformed data; non-transformed means are presented in the table. All treatments applied 14 May (aphid population present and increasing). Open in new tab Table 1. Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Means followed by the same letter do not significantly differ (P ≤ 0.05, Tukey’s HSD). ANOVA performed on square-root transformed data; non-transformed means are presented in the table. All treatments applied 14 May (aphid population present and increasing). Open in new tab The treatments of Sivanto Prime with R-11 and R-56 both showed significant reductions in RAA colonies 1 wk after the applications and provided control for at least 3 wk (Table 1).1 Footnotes 1 This research was supported by industry gifts of pesticides and research funding. © 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 journals.permissions@oup.com © The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Control of Rosy Apple Aphid, 2021

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Abstract

Apple | Malus domestica Rosy apple aphid (RAA) | Dysaphis plantaginea (Passerini) flupyradifurone This trial was conducted to evaluate the efficacy of Sivanto Prime with two different classes of adjuvants for the control of RAA. Three tree plots arranged in a RCB design were established in a 10-yr-old ‘Crimson Gold’ (Blue Block) apple planting (14 × 6 ft spacing) located at the Trevor Nichols Research Center. Test materials were applied with an FMC 1029 airblast sprayer calibrated to deliver 100 gpa at 2.5 mph. Regular maintenance foliar applications were applied to all treatments including Captan 80WDG, Imidan 70WP, Indar 2F, Inspire Super 2.82EW, Manzate Pro-Stik 75WDG, and Merivon 4.17SC. In addition, Alion 1.67SC and glyphosate were banded below the trees for weed control. Treatments were applied 14 May as indicated (Table 1). RAA evaluations were made by inspecting shoots for 2 min and recording the number of live colonies. RAA evaluations occurred on 14 May (pre-treatment count), 17 May, 24 May, 1 Jun, and 7 Jun with mean live colonies reported (Table 1). Although non-transformed means are presented, ANOVA was run on square-root transformed data. Transformed treatment means were analyzed using ANOVA and means separation by Tukey’s HSD at P < 0.05. Table 1. Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Means followed by the same letter do not significantly differ (P ≤ 0.05, Tukey’s HSD). ANOVA performed on square-root transformed data; non-transformed means are presented in the table. All treatments applied 14 May (aphid population present and increasing). Open in new tab Table 1. Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Treatment/formulation . Rate product/acre . RAA mean live colonies per 2 min count . . . . . . . 14 May . 17 May . 24 May . 1 Jun . 7 Jun . Untreated check 23.8a 31.5a 39.8a 51.5a 94a Sivanto Prime 200SL + 12 fl oz 35.5a 34a 8.5b 7.3b 16b R-11 0.25 % v:v Sivanto Prime 200SL + 12 fl oz 28.5a 29.5a 0.8b 0.0b 0b R-56 0.25 % v:v Means followed by the same letter do not significantly differ (P ≤ 0.05, Tukey’s HSD). ANOVA performed on square-root transformed data; non-transformed means are presented in the table. All treatments applied 14 May (aphid population present and increasing). Open in new tab The treatments of Sivanto Prime with R-11 and R-56 both showed significant reductions in RAA colonies 1 wk after the applications and provided control for at least 3 wk (Table 1).1 Footnotes 1 This research was supported by industry gifts of pesticides and research funding. © 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 journals.permissions@oup.com © The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2022

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