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CONTROL OF BEAN LEAF BEETLE IN SOYBEANS, 2006

CONTROL OF BEAN LEAF BEETLE IN SOYBEANS, 2006 (F47) SOYBEAN: Glycine max (L.) Merrill (NK S23-Z3) Gerald W. Echtenkamp Haskell Agricultural Laboratory 57905 866 Road, Concord, NE 68728 (402)-584-2261 Thomas E. Hunt Bean leaf beetle (BLB): Cerotoma trifurcata (Forster) Foliar and seed treatments of registered and non-registered insecticides were evaluated for control of BLB. Seed treatments were either commercially prepared or were supplied to us pre-treated. Experimental design was a randomized complete block with four replications. Foliar treatments were applied to soybean plots on 30 May. All liquid insecticides were applied with a back-pack sprayer calibrated to deliver 20 gpa at 25 psi. One pre-count and four post treatment beetles counts were taken on day one, three, seven and 14. Combine yields were taken on 2 Oct and adjusted to 13% moisture. Results were analyzed using analysis of variance procedures. Treatment means were separated using LSD procedures. There were significantly lower beetle numbers for the Cruiser and Gaucho seed treatments than the untreated check with Apron for the pre count. Day one beetle count indicates control with the foliar treatments. On day three and seven beetle counts did vary significantly. By day 14, there was little significant difference in beetle numbers between any of the treatments and the untreated check, however beetle numbers were generally low and are thus not presented. Most yield results were not significantly different than the untreated check, although several treatments did yield significantly more than the check. There was little difference in yield between treatments. BLB/meter of row Treatment/form. Rate Pre Day 1 Day 3 Day 7 Bu/acre A14379 56 ga/100 kg 0.91c-f 0.16cd 0.08c 0.42a-d 66.1a-c A14379 56 ga/100 kg + Cruiser5FS 25 ga/100 kg 0.25f 0.00d 0.41cd 0.25b-d 63.8a-d A14379 56 ga/100 kg + Cruiser5FS 50 ga/100 kg 0.41e-g 0.08cd 0.33bc 0.41a-d 65.1a-d A14379 56 ga/100 kg + Cruiser5FS 50 ga/100 kg + Warrior 1E (F1) 0.025 lbs ai/A 0.41d-f 0.16cd 0.08c 0.33a-d 65.5a-d A14379 56 ga/100 kg + Warrior 1E (F1) 0.025 lbs ai/A 0.24f 0.16cd 0.16c 0.83a 65.5a-d Baythroid 2E 0.016 lbs ai/A + Lorsban 4E 0.250 lbs ai/A 3.66ab 0.00d 0.08c 0.16b-d 67.1a Baythroid 2E 0.016 lbs ai/A 4.25ab 0.00d 0.00c 0.25b-d 66.6ab Baythroid 2E 0.022 lbs ai/A 2.50b-d 0.00d 0.00c 0.25b-d 63.6a-d Dimethoate 4E 0.500 lbs ai/A 4.08ab 0.08cd 0.00c 0.50a-d 63.9a-d Engeo K 247SC 0.044 lbs ai/A 3.75ab 0.00d 0.00c 0.33a-d 64.8a-d FMC 6113 0.05 lbs ai/A 4.00ab 0.08cd 0.00c 0.00d 64.8a-d Gaucho 480 62.5 ga/100 kg 0.33ef 0.50a-c 0.33bc 0.66ab 62.1d Gaucho 480 62.5 ga/100 kg + L12692 28 g/liter 0.66c-f 0.25b-d 0.91a 0.41a-d 63.8a-d Mustang Max 0.019 lbs ai/A + Lorsban 4E 0.25 lbs ai/A 2.16b-d 0.00d 0.00c 0.16b-d 65.4a-d Mustang Max 0.025 lbs ai/A 4.08ab 0.08cd 0.08c 0.25b-d 64.5a-d STP 15142 4 ga/100 kg + STP 15199 5 ga/100 kg + STP 15273 65 ga/100 kg 0.33ef 0.41b-d 0.66ab 0.58a-c 64.8a-d Trimax Pro 0.035 lbs ai/A 2.58bc 0.00d 0.00c 0.08cd 63.0b-d Trimax Pro 0.047 lbs ai/A 3.08ab 0.08cd 0.00c 0.16b-d 67.3a Warrior 1E 0.025 lbs ai/A 2.41b-e 0.00d 0.00c 0.33a-d 63.0b-d Apron + Warrior 1E (F1) 0.025 lbs ai/A 4.88a 0.00d 0.08c 0.41a-d 63.6a-d Untreated + Apron --- 5.16a 0.66ab 0.91a 0.41a-d 62.5cd Untreated --- 2.49b-d 0.91a 0.91a 0.08cd 61.9d Means followed by the same letter are not significantly different (P > 0.05) using LSD. Seed treatment – Trifloxystrobin 15.8 ga/l + Metalaxy 12.3 ga/l + Imidacloprid 480ga/l. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

CONTROL OF BEAN LEAF BEETLE IN SOYBEANS, 2006

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Abstract

(F47) SOYBEAN: Glycine max (L.) Merrill (NK S23-Z3) Gerald W. Echtenkamp Haskell Agricultural Laboratory 57905 866 Road, Concord, NE 68728 (402)-584-2261 Thomas E. Hunt Bean leaf beetle (BLB): Cerotoma trifurcata (Forster) Foliar and seed treatments of registered and non-registered insecticides were evaluated for control of BLB. Seed treatments were either commercially prepared or were supplied to us pre-treated. Experimental design was a randomized complete block with four replications. Foliar treatments were applied to soybean plots on 30 May. All liquid insecticides were applied with a back-pack sprayer calibrated to deliver 20 gpa at 25 psi. One pre-count and four post treatment beetles counts were taken on day one, three, seven and 14. Combine yields were taken on 2 Oct and adjusted to 13% moisture. Results were analyzed using analysis of variance procedures. Treatment means were separated using LSD procedures. There were significantly lower beetle numbers for the Cruiser and Gaucho seed treatments than the untreated check with Apron for the pre count. Day one beetle count indicates control with the foliar treatments. On day three and seven beetle counts did vary significantly. By day 14, there was little significant difference in beetle numbers between any of the treatments and the untreated check, however beetle numbers were generally low and are thus not presented. Most yield results were not significantly different than the untreated check, although several treatments did yield significantly more than the check. There was little difference in yield between treatments. BLB/meter of row Treatment/form. Rate Pre Day 1 Day 3 Day 7 Bu/acre A14379 56 ga/100 kg 0.91c-f 0.16cd 0.08c 0.42a-d 66.1a-c A14379 56 ga/100 kg + Cruiser5FS 25 ga/100 kg 0.25f 0.00d 0.41cd 0.25b-d 63.8a-d A14379 56 ga/100 kg + Cruiser5FS 50 ga/100 kg 0.41e-g 0.08cd 0.33bc 0.41a-d 65.1a-d A14379 56 ga/100 kg + Cruiser5FS 50 ga/100 kg + Warrior 1E (F1) 0.025 lbs ai/A 0.41d-f 0.16cd 0.08c 0.33a-d 65.5a-d A14379 56 ga/100 kg + Warrior 1E (F1) 0.025 lbs ai/A 0.24f 0.16cd 0.16c 0.83a 65.5a-d Baythroid 2E 0.016 lbs ai/A + Lorsban 4E 0.250 lbs ai/A 3.66ab 0.00d 0.08c 0.16b-d 67.1a Baythroid 2E 0.016 lbs ai/A 4.25ab 0.00d 0.00c 0.25b-d 66.6ab Baythroid 2E 0.022 lbs ai/A 2.50b-d 0.00d 0.00c 0.25b-d 63.6a-d Dimethoate 4E 0.500 lbs ai/A 4.08ab 0.08cd 0.00c 0.50a-d 63.9a-d Engeo K 247SC 0.044 lbs ai/A 3.75ab 0.00d 0.00c 0.33a-d 64.8a-d FMC 6113 0.05 lbs ai/A 4.00ab 0.08cd 0.00c 0.00d 64.8a-d Gaucho 480 62.5 ga/100 kg 0.33ef 0.50a-c 0.33bc 0.66ab 62.1d Gaucho 480 62.5 ga/100 kg + L12692 28 g/liter 0.66c-f 0.25b-d 0.91a 0.41a-d 63.8a-d Mustang Max 0.019 lbs ai/A + Lorsban 4E 0.25 lbs ai/A 2.16b-d 0.00d 0.00c 0.16b-d 65.4a-d Mustang Max 0.025 lbs ai/A 4.08ab 0.08cd 0.08c 0.25b-d 64.5a-d STP 15142 4 ga/100 kg + STP 15199 5 ga/100 kg + STP 15273 65 ga/100 kg 0.33ef 0.41b-d 0.66ab 0.58a-c 64.8a-d Trimax Pro 0.035 lbs ai/A 2.58bc 0.00d 0.00c 0.08cd 63.0b-d Trimax Pro 0.047 lbs ai/A 3.08ab 0.08cd 0.00c 0.16b-d 67.3a Warrior 1E 0.025 lbs ai/A 2.41b-e 0.00d 0.00c 0.33a-d 63.0b-d Apron + Warrior 1E (F1) 0.025 lbs ai/A 4.88a 0.00d 0.08c 0.41a-d 63.6a-d Untreated + Apron --- 5.16a 0.66ab 0.91a 0.41a-d 62.5cd Untreated --- 2.49b-d 0.91a 0.91a 0.08cd 61.9d Means followed by the same letter are not significantly different (P > 0.05) using LSD. Seed treatment – Trifloxystrobin 15.8 ga/l + Metalaxy 12.3 ga/l + Imidacloprid 480ga/l.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2007

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