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Soybean | Glycine max
Japanese beetle | Popillia japonica
(E)-N1-[(6-chloro-3-pyridyl)methyl]-N2-cyano-N1-methylacetamidine, 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl-cyano(3-phenoxyphenyl)methyl cyclopropanecarboxylate, 3-bromo-N-[4-chloro-2-methyl-6-(methylcarbamoyl)phenyl]-1-(3-chloro-2-pyridine-2-yl)-1H-pyrazole-5-carboxamide, O,O-diethyl O-3,5,6-trichloropyridin-2-yl phosphorothioate, 3-[(2-chloro-1,3-thiazol-5-yl)methyl]-5-methyl-N-nitro-1,3,5-oxadiazinan-4-imine, methyl N-{2-[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxymethyl]phenyl}(Nmethoxy)carbamate, methyl (2E)-2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-3-methoxyacrylate, 1-[[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl]methyl]-1,2,4-triazole, methyl (2E)-2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-3-methoxyacrylate, [methyl(oxo){1-[6-(trifluoromethyl)-3-pyridyl]ethyl}-λ6-sulfanylidene]cyanamide

We established one trial near Morrison, IL, to evaluate the efficacy of foliar-applied insecticides and insecticide/fungicide combinations to control Japanese beetles. The experimental design was an RCB with four replications. The plot size for each treatment was 10 ft (four rows) × 20 ft. The trial was planted on 23 May using a 16-row, Case IH Model 1240 Early Riser planter. Seeds were planted at a rate of 155,600 seeds/acre in 30-inch rows at an approximate depth of 1 inch. Foliar-applied products were applied on 14 Aug with a CO 2 backpack sprayer and a four-row boom. TeeJet TTJ60-11002 spray tips were calibrated to deliver a volume of 15 gpa. Densities of Japanese beetles were determined by taking 20 sweeps per plot with a 15-inch-diameter sweep net. After the application of products, densities were assessed on 21 and 28 Aug (7 and 14 DAT, respectively) and on 4 Sep (21 DAT). Yields were estimated by harvesting the center two rows of each plot on 10 Oct. Weights were converted to bu/acre at 13% moisture. Data were analyzed using ARM 9, revision 9.2014.2 (Gylling Data Management, Inc., Brookings, SD).

Prior to the application of products on 14 Aug, there was an average of 3.3 Japanese beetles per 20 sweeps in the trial area. Mean densities of Japanese beetles following the application of treatments are presented in Table 1 . On 21 Aug (7 DAT), all treatments (excluding Transform WG) had a significantly lower mean number of Japanese beetles per 20 sweeps than the untreated check. Similarly, on 28 Aug (14 DAT), most treatments (excluding Transform WG and Quilt Xcel) continued to have a significantly lower mean number of Japanese beetles per 20 sweeps than the untreated check. By 4 Sep (21 DAT), mean numbers of Japanese beetles per 20 sweeps were low for all treatments, including the untreated check—no significant differences among the treatments were observed. Mean yields were statistically similar for all treatments and ranged from 63.3 to 72.4 bu/acre.

Treatment/formulation a Rate b Japanese beetles per 20 sweeps c
 Yield d (bu/acre)
7 DAT14 DAT21 DAT
Besiege8.90.8c1.8cd0.0a66.2a
Cobalt Advanced261.5bc0.3d0.3a68.0a
Cobalt Advanced + Headline26, 12.40.5c0.8d0.8a68.8a
Endigo ZCX e4.50.3c0.8d0.5a65.1a
Quilt Xcel145.8b11.3a2.0a66.7a
Quindigo e140.5c0.5d0.3a68.9a
Transform WG112.0a6.0bc1.0a63.3a
Warrior II1.920.5c1.8cd0.0a72.4a
Warrior II + Assail 30SG1.92, 1.671.5bc3.0cd1.0a69.1a
Warrior II + Quilt Xcel1.92, 140.5c0.0d0.5a67.1a
Untreated check—11.8a9.8ab1.0a66.4a
Treatment/formulation a Rate b Japanese beetles per 20 sweeps c
 Yield d (bu/acre)
7 DAT14 DAT21 DAT
Besiege8.90.8c1.8cd0.0a66.2a
Cobalt Advanced261.5bc0.3d0.3a68.0a
Cobalt Advanced + Headline26, 12.40.5c0.8d0.8a68.8a
Endigo ZCX e4.50.3c0.8d0.5a65.1a
Quilt Xcel145.8b11.3a2.0a66.7a
Quindigo e140.5c0.5d0.3a68.9a
Transform WG112.0a6.0bc1.0a63.3a
Warrior II1.920.5c1.8cd0.0a72.4a
Warrior II + Assail 30SG1.92, 1.671.5bc3.0cd1.0a69.1a
Warrior II + Quilt Xcel1.92, 140.5c0.0d0.5a67.1a
Untreated check—11.8a9.8ab1.0a66.4a

Means within a column followed by the same letter do not differ significantly (ARM 9, DMRT).

a Crop oil concentrate was added to the spray solution for each product (excluding the Cobalt Advanced and Cobalt Advanced + Headline treatments) at a rate of 1%.

b Rates of application are oz of product per acre.

c Means were derived from the numbers of insects per 20 sweeps per plot in each of four replications ( P < 0.05).

d Soybeans were harvested from the center two rows of each plot and converted to bu/acre at 13% moisture ( P < 0.1).

e Product is not currently labeled for commercial use.

Treatment/formulation a Rate b Japanese beetles per 20 sweeps c
 Yield d (bu/acre)
7 DAT14 DAT21 DAT
Besiege8.90.8c1.8cd0.0a66.2a
Cobalt Advanced261.5bc0.3d0.3a68.0a
Cobalt Advanced + Headline26, 12.40.5c0.8d0.8a68.8a
Endigo ZCX e4.50.3c0.8d0.5a65.1a
Quilt Xcel145.8b11.3a2.0a66.7a
Quindigo e140.5c0.5d0.3a68.9a
Transform WG112.0a6.0bc1.0a63.3a
Warrior II1.920.5c1.8cd0.0a72.4a
Warrior II + Assail 30SG1.92, 1.671.5bc3.0cd1.0a69.1a
Warrior II + Quilt Xcel1.92, 140.5c0.0d0.5a67.1a
Untreated check—11.8a9.8ab1.0a66.4a
Treatment/formulation a Rate b Japanese beetles per 20 sweeps c
 Yield d (bu/acre)
7 DAT14 DAT21 DAT
Besiege8.90.8c1.8cd0.0a66.2a
Cobalt Advanced261.5bc0.3d0.3a68.0a
Cobalt Advanced + Headline26, 12.40.5c0.8d0.8a68.8a
Endigo ZCX e4.50.3c0.8d0.5a65.1a
Quilt Xcel145.8b11.3a2.0a66.7a
Quindigo e140.5c0.5d0.3a68.9a
Transform WG112.0a6.0bc1.0a63.3a
Warrior II1.920.5c1.8cd0.0a72.4a
Warrior II + Assail 30SG1.92, 1.671.5bc3.0cd1.0a69.1a
Warrior II + Quilt Xcel1.92, 140.5c0.0d0.5a67.1a
Untreated check—11.8a9.8ab1.0a66.4a

Means within a column followed by the same letter do not differ significantly (ARM 9, DMRT).

a Crop oil concentrate was added to the spray solution for each product (excluding the Cobalt Advanced and Cobalt Advanced + Headline treatments) at a rate of 1%.

b Rates of application are oz of product per acre.

c Means were derived from the numbers of insects per 20 sweeps per plot in each of four replications ( P < 0.05).

d Soybeans were harvested from the center two rows of each plot and converted to bu/acre at 13% moisture ( P < 0.1).

e Product is not currently labeled for commercial use.

* This experiment was supported through industry gifts of products and research funding.

Author notes

Subject Editor: Jawwad Qureshi

© The Author 2015. Published by Oxford University Press on behalf of the Entomological Society of America.
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 [email protected]
Issue Section:
Test > Hosts > Pests > Materials > 3-[(2-Chloro-1,3-thiazol-5-yl)methyl]-5-methyl-N-nitro-1,3,5-oxadiazinan-4-imine > O,O-diethyl O-3,5,6-trichloropyridin-2-yl phosphorothioate > (E)-N1-[(6-chloro-3-pyridyl)methyl]-N2-cyano-N1-methylacetamidine > [methyl(oxo){1-[6-(trifluoromethyl)-3-pyridyl]ethyl}-λ6-sulfanylidene]cyanamide > Soybean | Glycine max > Japanese beetle | Popillia japonica > 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl-cyano(3-phenoxyphenyl)methyl cyclopropanecarboxylate > 3-bromo-N-[4-chloro-2-methyl-6-(methylcarbamoyl)phenyl]-1-(3-chloro-2-pyridine-2-yl)-1H-pyrazole-5-carboxamide > methyl N-{2-[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxymethyl]phenyl}(Nmethoxy)carbamate > methyl (2E)-2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-3-methoxyacrylate > 1-[[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl]methyl]-1,2,4-triazole
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