Performance of Selected Insecticides Against Soybean Looper in Soybean, 2020

Abstract Three tests, each consisting of 4-5 insecticide treatments were replicated 4 times in a RCBD at the Macon Ridge Branch of the Northeast Research Station, Winnsboro, LA. Cotton was planted 1 Jul into plots 4 rows (40 inch centers) by 30 ft. Treatments for Tests 1, 2 and 3 were applied on 2, 13 and 14 Sep, respectively, with a high clearance sprayer calibrated to deliver 11.5 gal total spray/acre through Teejet X-8 hollow cone nozzles (2/row) at 46 psi. Treatment efficacy was determined by taking a 10 sweep (standard 15 inch diam net) sample from each plot. Sweep samples were usually taken 2, 4-5 and 6-7 DAT on rows 1, 2 or 3, respectively. The test areas received 0.20, 0.67 and 1.1 inches rainfall on 6, 15 and 16 Sep, respectively.

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Field-evolved resistance to chitin synthesis inhibitor insecticides by soybean looper, Chrysodeixis includens (Lepidoptera: Noctuidae), in Brazil

Chemosphere ◽

10.1016/j.chemosphere.2020.127499 ◽

2020 ◽

Vol 259 ◽

pp. 127499

Author(s):

Regis F. Stacke ◽

Daniela N. Godoy ◽

Venicius E. Pretto ◽

Fábio M. Führ ◽

Patricia da S. Gubiani ◽

...

Keyword(s):

Chitin Synthesis ◽

Synthesis Inhibitor ◽

Chitin Synthesis Inhibitor ◽

Soybean Looper ◽

Lepidoptera Noctuidae ◽

Chrysodeixis Includens

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Evaluation of Insecticides for Control of Soybean Looper on Soybean, 1993

Arthropod Management Tests ◽

10.1093/amt/19.1.267a ◽

1994 ◽

Vol 19 (1) ◽

pp. 267-268

Author(s):

Z. D. DeLamar ◽

T. P. Mack

Keyword(s):

Plant Breeding ◽

Field Test ◽

Untreated Control ◽

Row Spacing ◽

Auburn University ◽

Insect Populations ◽

Soybean Looper ◽

Sheet Sample ◽

Flat Fan Nozzle

Abstract This field test was conducted in conventionally planted and tilled soybeans at the E. V. Smith Plant Breeding Unit of Auburn University at Tallassee, AL. Eleven treatments including an untreated control were replicated 4 times in a RCBD. Each plot was 6 rows wide (30 inch row spacing) and 40 ft long. Replicates were separated by a 15 ft alley. Treatments were applied in water on 13 Aug using a boom sprayer with one 80003 flat fan nozzle per row operating at 32 psi and delivering 8.0 gal/acre. Insect populations were monitored with 2 beat sheet samples per plot. One beat sheet sample was done when 36 inches of the 2 adjacent rows were sampled by beating the plants vigorously over the beat sheet. Insects were identified and recorded in situ. Samples were taken 18 h before treatment and at 3, 7 and 10 DAT.

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