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European Corn Borer Control in Snap Bean, 2015

European Corn Borer Control in Snap Bean, 2015 Arthropod Management Tests, 2016, 1–1 doi: 10.1093/amt/tsw047 Section E: Vegetable Crops SNAP BEAN: Phaseolus vulgaris L., ‘Huntington’ Rebecca A. Schmidt-Jeffris and Brian A. Nault Department of Entomology, Cornell University, New York State Agricultural Experiment Station, 630 W. North Street, Geneva, NY 14456, Phone: (315) 787-2423, Fax: (315) 787-2326 (schmidt-jeffris@cornell.edu; ban6@cornell.edu) and Corresponding author, e-mail: schmidt-jeffris@cornell.edu Subject Editor: Vonny Barlow Bean (snap) j Phaseolus vulgaris European corn borer: Ostrinia nubilalis (Hu ¨ bner) European corn borer control (ECB) using foliar-applied insecticides plants within the infested portion of each plot were sampled on was evaluated in a research snap bean field near Geneva, New York 25–27 Aug and inspected for ECB larvae and their damage. The (GPS coordinates: 42.865500, -77.029667). On 25 June 2015, pro- number of snap bean plants and market-sized pods infested/dam- cessing snap bean seeds were planted at a density of 23 seeds per m aged and not infested/damaged by ECB larvae were recorded from using a precision vacuum planter (Monosem Inc.). All seeds (includ- each plot. Additionally, all market-sized pods from the plants not ing the non-insecticide control) were treated with thiamethoxam damaged by ECB were weighed. Data were analyzed using a gener- (Cruiser 5FS) and mefenoxam and fludioxonil (ApronMaxx) to pro- alized linear mixed model in SAS (PROC GLIMMIX), specifying a tect seedlings against seed corn maggot, early infestations of potato binomial distribution for damage data (damaged plants/total plants leafhoppers and diseases. Natural ECB pressure in the research field and damaged pods/total pods) and a normal distribution for weight is rarely high enough to sufficiently evaluate insecticide treatments of the undamaged pods. Replicate was treated as a random effect. on snap bean. To increase ECB pressure at the typical time ECB in- Treatments were compared using least-squared means at P< 0.05. fests snap bean, plots were infested with neonates during late bloom The ECB infestation and resulting damage in this trial was con- to early pin stage. In one row of each plot that had the most uniform sidered high based on the level in the untreated control (Table 1). plant stand, a 3.0-m section was infested by hand with approxi- The lowest percentages of ECB-damaged plants and marketable mately 1,700 neonates on 7–9 Aug 2015. ECB were obtained from pods were observed in plots treated with Belt SC, Coragen, Exirel, French Agricultural Research, Inc., Lamberton, MN. Besiege, and Brigade 2EC (Table 1). No differences existed among Treatments were arranged in a RCB with five replications. Plots these best-performing treatments. Radiant SC-treated plants and consisted of two rows 3.0 m long with rows spaced 76 cm apart. pods had higher damage than the best performing treatments, but Treatments were applied at 19.8 gpa and 40 psi using a CO -pres- less damage than the Intrepid 2F treatment. Intrepid 2F-treated surized backpack sprayer equipped with four, twin flat-fan nozzles plants and pods had less damage than the untreated control, but still (TJ 8002VS). Plots were sprayed on 6 Aug 2015, approximately one incurred high levels of damage. Weights of marketable beans did not day before pod formation. Environmental conditions were typical at differ significantly among treatments (Table 1). This research was planting, although planting occurred later in the season than usual partially supported by industry gifts including products and research due to rain throughout early to mid-June. Temperatures during the study were relatively normal, with lower rainfall than average. All funding. Table 1 a a a Product/formulation Rate (fl oz/acre) n plant % damaged plants n pod % damaged pods Yield (lb) Check – 208 73.016 7.39a 1439 15.136 3.38a 3.506 0.81a Belt SC þ Induce 2.0 þ 0.125% v:v 229 0.006 0.00d 1353 0.006 0.00d 3.656 0.81a Coragen þ Induce 3.5 þ 0.125% v:v 204 0.006 0.00d 1513 0.196 0.12d 4.576 0.64a Exirel þ Induce 13.5 þ 0.125% v:v 248 1.276 0.87d 1745 0.056 0.05d 5.166 0.45a Besiege þ Induce 6.0 þ 0.125% v:v 266 0.326 0.32d 1912 0.156 0.15d 5.426 0.50a Brigade 2EC 3.0 279 0.686 0.68d 1701 0.116 0.11d 4.826 0.53a Radiant SC þ Induce 7.2 þ 0. 5% v:v 284 5.556 2.89c 1817 1.116 0.67c 5.486 0.96a Intrepid 2F 6.0 253 34.296 7.77b 1346 5.556 1.32b 3.706 0.86a F(7,28) 41.17 42.75 1.73 P 0.00 0.00 0.14 Treatment means followed by the same letter are not significantly different (P< 0.5, least squared means). V C The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

European Corn Borer Control in Snap Bean, 2015

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Oxford University Press
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© The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America.
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2155-9856
DOI
10.1093/amt/tsw047
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Abstract

Arthropod Management Tests, 2016, 1–1 doi: 10.1093/amt/tsw047 Section E: Vegetable Crops SNAP BEAN: Phaseolus vulgaris L., ‘Huntington’ Rebecca A. Schmidt-Jeffris and Brian A. Nault Department of Entomology, Cornell University, New York State Agricultural Experiment Station, 630 W. North Street, Geneva, NY 14456, Phone: (315) 787-2423, Fax: (315) 787-2326 (schmidt-jeffris@cornell.edu; ban6@cornell.edu) and Corresponding author, e-mail: schmidt-jeffris@cornell.edu Subject Editor: Vonny Barlow Bean (snap) j Phaseolus vulgaris European corn borer: Ostrinia nubilalis (Hu ¨ bner) European corn borer control (ECB) using foliar-applied insecticides plants within the infested portion of each plot were sampled on was evaluated in a research snap bean field near Geneva, New York 25–27 Aug and inspected for ECB larvae and their damage. The (GPS coordinates: 42.865500, -77.029667). On 25 June 2015, pro- number of snap bean plants and market-sized pods infested/dam- cessing snap bean seeds were planted at a density of 23 seeds per m aged and not infested/damaged by ECB larvae were recorded from using a precision vacuum planter (Monosem Inc.). All seeds (includ- each plot. Additionally, all market-sized pods from the plants not ing the non-insecticide control) were treated with thiamethoxam damaged by ECB were weighed. Data were analyzed using a gener- (Cruiser 5FS) and mefenoxam and fludioxonil (ApronMaxx) to pro- alized linear mixed model in SAS (PROC GLIMMIX), specifying a tect seedlings against seed corn maggot, early infestations of potato binomial distribution for damage data (damaged plants/total plants leafhoppers and diseases. Natural ECB pressure in the research field and damaged pods/total pods) and a normal distribution for weight is rarely high enough to sufficiently evaluate insecticide treatments of the undamaged pods. Replicate was treated as a random effect. on snap bean. To increase ECB pressure at the typical time ECB in- Treatments were compared using least-squared means at P< 0.05. fests snap bean, plots were infested with neonates during late bloom The ECB infestation and resulting damage in this trial was con- to early pin stage. In one row of each plot that had the most uniform sidered high based on the level in the untreated control (Table 1). plant stand, a 3.0-m section was infested by hand with approxi- The lowest percentages of ECB-damaged plants and marketable mately 1,700 neonates on 7–9 Aug 2015. ECB were obtained from pods were observed in plots treated with Belt SC, Coragen, Exirel, French Agricultural Research, Inc., Lamberton, MN. Besiege, and Brigade 2EC (Table 1). No differences existed among Treatments were arranged in a RCB with five replications. Plots these best-performing treatments. Radiant SC-treated plants and consisted of two rows 3.0 m long with rows spaced 76 cm apart. pods had higher damage than the best performing treatments, but Treatments were applied at 19.8 gpa and 40 psi using a CO -pres- less damage than the Intrepid 2F treatment. Intrepid 2F-treated surized backpack sprayer equipped with four, twin flat-fan nozzles plants and pods had less damage than the untreated control, but still (TJ 8002VS). Plots were sprayed on 6 Aug 2015, approximately one incurred high levels of damage. Weights of marketable beans did not day before pod formation. Environmental conditions were typical at differ significantly among treatments (Table 1). This research was planting, although planting occurred later in the season than usual partially supported by industry gifts including products and research due to rain throughout early to mid-June. Temperatures during the study were relatively normal, with lower rainfall than average. All funding. Table 1 a a a Product/formulation Rate (fl oz/acre) n plant % damaged plants n pod % damaged pods Yield (lb) Check – 208 73.016 7.39a 1439 15.136 3.38a 3.506 0.81a Belt SC þ Induce 2.0 þ 0.125% v:v 229 0.006 0.00d 1353 0.006 0.00d 3.656 0.81a Coragen þ Induce 3.5 þ 0.125% v:v 204 0.006 0.00d 1513 0.196 0.12d 4.576 0.64a Exirel þ Induce 13.5 þ 0.125% v:v 248 1.276 0.87d 1745 0.056 0.05d 5.166 0.45a Besiege þ Induce 6.0 þ 0.125% v:v 266 0.326 0.32d 1912 0.156 0.15d 5.426 0.50a Brigade 2EC 3.0 279 0.686 0.68d 1701 0.116 0.11d 4.826 0.53a Radiant SC þ Induce 7.2 þ 0. 5% v:v 284 5.556 2.89c 1817 1.116 0.67c 5.486 0.96a Intrepid 2F 6.0 253 34.296 7.77b 1346 5.556 1.32b 3.706 0.86a F(7,28) 41.17 42.75 1.73 P 0.00 0.00 0.14 Treatment means followed by the same letter are not significantly different (P< 0.5, least squared means). V C The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial 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

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2016

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