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EVALUATION OF IN-FURROW TREATMENTS FOR CONTROL OF EUROPEAN CORN BORER IN SNAP BEAN, 2012

EVALUATION OF IN-FURROW TREATMENTS FOR CONTROL OF EUROPEAN CORN BORER IN SNAP BEAN, 2012 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.E1 (E1) SNAP BEAN: Phaseolus vulgaris L., ’DMC 04-88’ EVALUATION OF IN-FURROW TREATMENTS FOR CONTROL OF EUROPEAN CORN BORER IN SNAP BEAN, 2012 Russell L. Groves University of Wisconsin-Madison Entomology Department 1630 Linden Drive Madison, WI 53706 Phone: 608-262-3229 Fax: 608-262-3322 Email: groves@entomology.wisc.edu Scott Chapman Email: chapman@entomology.wisc.edu Anders S. Huseth Email: ashuseth@wisc.edu Carol L. Groves Email: cgroves@wisc.edu European corn borer (ECB): Ostrinia nubilalis (Hübner) The objective of this experiment was to assess the efficacy of in-furrow insecticides applied at flowering and pin-bean stage development to control European corn borer (ECB). The trial consisted of 12 main effect treatments arranged in a RCB design with four experimental replicates. Snap bean was planted on 3 June, 2012 at an experimental site near Plover, WI. Snap bean was seeded at a rate of 8 seeds per foot within rows. Rows were 30 inches (0.75 m) apart. Experimental 2 row plots were 5 ft (1.5 m) wide and 25 ft (7.5 m) in length with 2 unplanted guard rows on each side. In-furrow treatments were applied at 11.1 gpa using a single nozzle, 6 ft (1.8m) boom equipped with a TeeJet XR8002VS flat fan spray tip powered by a CO backpack sprayer operating at 30psi. In-furrow, at plant and fertilizer premix applications occurred between 10:00 and 11:00 hours on 3 June 2012. Liquid fertilizer pre-mixes were applied at a rate of 35 lb (15.9 kg) nitrogen in 4.5 gpa through a Raven Injection System. Foliar applications were applied 28 June 2012 with a CO pressurized backpack sprayer with a three nozzle boom operating at 30 psi delivering 18.9 gpa through 3, flat fan nozzles (Tee Jet XR8002VS) traveling at 3.5 ft/sec. All plots were maintained according to standard commercial practices. Populations of ECB and associated damage estimates were surveyed 9 July by counting the total number of infested plants and pods, the number of damaged stems, number of damaged pods and the number of viable larvae in both stems and pods. Insect counts occurred on several dates throughout the summer, and means are reported as averages over dates. Count data were log transformed prior to analysis. Data were analyzed using ANOVA and means were separated with a Fisher’s Protected LSD. No overt signs of phytotoxicity were observed. All main effect treatments significantly reduced the number of ECB infested stems and damaged pods over the experimental interval (Table 1). 1 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.E1 Table 1. Mean ECB infestation and damage estimates in snap bean / 25 plants Treatment/ Proportion Proportion formulation Rate Application type damaged stems damaged pods Untreated Check 0.15a 0.005a Coragen 1.67 SC 3.5 fl oz/ a In-Furrow 0b 0b Coragen 1.67 SC 5 fl oz/a In-Furrow 0.07b 0b Coragen 1.67 SC 7 fl oz/a In-Furrow 0b 0b Verimark 20 SC 10 fl oz/a In-Furrow 0b 0b Verimark 20 SC 13.5 fl oz/a In-Furrow 0.01b 0b Coragen 1.67 SC 5 fl oz/a Fertilizer (Pre-Mix) 0.01b 0b Coragen 1.67 SC 7 fl oz/a Fertilizer (Pre-Mix) 0.01b 0b Verimark 20 SC 10 fl oz/a Fertilizer (Pre-Mix) 0b 0b Verimark 20 SC 13.5 fl oz/a Fertilizer (Pre-Mix) 0.01b 0.002b Coragen 1.67 SC 5 fl oz/a Foliar 0.02b 0b Exirel 10SE 13.5 fl oz/a Foliar 0.01b 0b http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

EVALUATION OF IN-FURROW TREATMENTS FOR CONTROL OF EUROPEAN CORN BORER IN SNAP BEAN, 2012

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Abstract

Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.E1 (E1) SNAP BEAN: Phaseolus vulgaris L., ’DMC 04-88’ EVALUATION OF IN-FURROW TREATMENTS FOR CONTROL OF EUROPEAN CORN BORER IN SNAP BEAN, 2012 Russell L. Groves University of Wisconsin-Madison Entomology Department 1630 Linden Drive Madison, WI 53706 Phone: 608-262-3229 Fax: 608-262-3322 Email: groves@entomology.wisc.edu Scott Chapman Email: chapman@entomology.wisc.edu Anders S. Huseth Email: ashuseth@wisc.edu Carol L. Groves Email: cgroves@wisc.edu European corn borer (ECB): Ostrinia nubilalis (Hübner) The objective of this experiment was to assess the efficacy of in-furrow insecticides applied at flowering and pin-bean stage development to control European corn borer (ECB). The trial consisted of 12 main effect treatments arranged in a RCB design with four experimental replicates. Snap bean was planted on 3 June, 2012 at an experimental site near Plover, WI. Snap bean was seeded at a rate of 8 seeds per foot within rows. Rows were 30 inches (0.75 m) apart. Experimental 2 row plots were 5 ft (1.5 m) wide and 25 ft (7.5 m) in length with 2 unplanted guard rows on each side. In-furrow treatments were applied at 11.1 gpa using a single nozzle, 6 ft (1.8m) boom equipped with a TeeJet XR8002VS flat fan spray tip powered by a CO backpack sprayer operating at 30psi. In-furrow, at plant and fertilizer premix applications occurred between 10:00 and 11:00 hours on 3 June 2012. Liquid fertilizer pre-mixes were applied at a rate of 35 lb (15.9 kg) nitrogen in 4.5 gpa through a Raven Injection System. Foliar applications were applied 28 June 2012 with a CO pressurized backpack sprayer with a three nozzle boom operating at 30 psi delivering 18.9 gpa through 3, flat fan nozzles (Tee Jet XR8002VS) traveling at 3.5 ft/sec. All plots were maintained according to standard commercial practices. Populations of ECB and associated damage estimates were surveyed 9 July by counting the total number of infested plants and pods, the number of damaged stems, number of damaged pods and the number of viable larvae in both stems and pods. Insect counts occurred on several dates throughout the summer, and means are reported as averages over dates. Count data were log transformed prior to analysis. Data were analyzed using ANOVA and means were separated with a Fisher’s Protected LSD. No overt signs of phytotoxicity were observed. All main effect treatments significantly reduced the number of ECB infested stems and damaged pods over the experimental interval (Table 1). 1 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.E1 Table 1. Mean ECB infestation and damage estimates in snap bean / 25 plants Treatment/ Proportion Proportion formulation Rate Application type damaged stems damaged pods Untreated Check 0.15a 0.005a Coragen 1.67 SC 3.5 fl oz/ a In-Furrow 0b 0b Coragen 1.67 SC 5 fl oz/a In-Furrow 0.07b 0b Coragen 1.67 SC 7 fl oz/a In-Furrow 0b 0b Verimark 20 SC 10 fl oz/a In-Furrow 0b 0b Verimark 20 SC 13.5 fl oz/a In-Furrow 0.01b 0b Coragen 1.67 SC 5 fl oz/a Fertilizer (Pre-Mix) 0.01b 0b Coragen 1.67 SC 7 fl oz/a Fertilizer (Pre-Mix) 0.01b 0b Verimark 20 SC 10 fl oz/a Fertilizer (Pre-Mix) 0b 0b Verimark 20 SC 13.5 fl oz/a Fertilizer (Pre-Mix) 0.01b 0.002b Coragen 1.67 SC 5 fl oz/a Foliar 0.02b 0b Exirel 10SE 13.5 fl oz/a Foliar 0.01b 0b

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2013

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