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EFFICACY OF SELECTED INSECTICIDES AGAINST THRIPS IN COTTON, 2012

EFFICACY OF SELECTED INSECTICIDES AGAINST THRIPS IN COTTON, 2012 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F44 (F44) COTTON: Gossypium hirsutum, ‘D&PL 0924 BGII’ Ben Von Kanel Department of Entomology and Plant Pathology Mississippi State University 121 Clay Lyle Building, Box 9775 Mississippi State, MS 39762 Phone: (662) 325-3195 Fax: (662) 325-8837 E-mail: mbv7@msstate.edu Angus L. Catchot E-mail: acatchot@entomology.msstate.edu Joshua L. Jones E-mail: jlj493@msstate.edu Brian P. Adams E-mail: bpa31@msstate.edu Adam Whalen E-mail: daw153@msstate.edu Dung Bao E-mail: db3@msstate.edu Jenny Bibb E-mail: jlbibb@msstate.edu Kevin Lanford E-mail: rkl49@msstate.edu Tobacco thrips: Frankliniella fusca (Hinds) On 25 Jun, a foliar insecticide trial was conducted in Ramsey Bottom located on the Foil Plant Research Facility in Starkville, MS. At time of application, cotton plants had approximately three visible true leaves. Plot size was 4 rows by 40 ft long on 38 inch centers. Statistical design was a randomized complete block with 4 replications. Ten insecticide treatments were evaluated against an untreated check (UTC). Insecticides were applied with a tractor-mounted sprayer calibrated to deliver 10.0 gpa at 60 psi through TX-6 Hollow Cone nozzles (2 per row). Treatments were applied on 25 Jun. Plots were sampled at 3 DAT and again at 7 DAT. Each plot was sampled by randomly cutting 5 plants from the center two rows and totaling the number of adult and immature thrips per 5 plants. Means for immature thrips were log transformed in order to homogenize data within treatments. Data was analyzed with ANOVA and means were separated using Fisher’s Protected LSD (P ≤ 0.05). There were no significant differences in mean immature thrips among treatments and the UTC (Table 1). There was no significant difference among treatments at 7 DAT, however, Radiant + Dyne-Amic and Orthene + Non-ionic surfactant did have numerically fewer immature thrips than other treatments. 1 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F44 Table 1. Average Number of Immature Thrips/5 plants Treatment/ Rate lb Formulation AI/Acre 4 DAT 1 5 DAT 2 Radiant SC 0.012 2.8a 7.3b Radiant SC 0.012 + Crop oil Concentrate 0.5% 6.3a 4.3b Radiant SC 0.012 + Metholated Seed Oil 0.5% 4.8a 4.8b Radiant SC 0.012 + Non-ionic Surfactant 0.5% 2.5a 5.8b Radiant SC 0.012 + Dyne-Amic 0.5% 3.8a 2.0b Orthene 97 SP 0.25 + Non-ionic Surfactant 0.5% 6.5a 1.0b Bidrin 8 EC 0.2 Non-ionic Surfactant 0.5% 2.0a 5.3b Dimethoate 4 EC 0.2 + Non-ionic Surfactant 0.5% 5.3a 8.5b Karate 2.08 Z 0.024 + Non-ionic Surfactant 0.5% 16.5a 6.5b Admire Pro 0.061 Non-ionic Surfactant 0.5% 3.3a 4.5b Untreated Control 19.3a 23.8a LSD (0.05) 13.04 7.64 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05). *Rates expressed as a volume/volume (%v/v) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

EFFICACY OF SELECTED INSECTICIDES AGAINST THRIPS IN COTTON, 2012

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Publisher
Oxford University Press
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© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.4182/amt.2013.F44
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Abstract

Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F44 (F44) COTTON: Gossypium hirsutum, ‘D&PL 0924 BGII’ Ben Von Kanel Department of Entomology and Plant Pathology Mississippi State University 121 Clay Lyle Building, Box 9775 Mississippi State, MS 39762 Phone: (662) 325-3195 Fax: (662) 325-8837 E-mail: mbv7@msstate.edu Angus L. Catchot E-mail: acatchot@entomology.msstate.edu Joshua L. Jones E-mail: jlj493@msstate.edu Brian P. Adams E-mail: bpa31@msstate.edu Adam Whalen E-mail: daw153@msstate.edu Dung Bao E-mail: db3@msstate.edu Jenny Bibb E-mail: jlbibb@msstate.edu Kevin Lanford E-mail: rkl49@msstate.edu Tobacco thrips: Frankliniella fusca (Hinds) On 25 Jun, a foliar insecticide trial was conducted in Ramsey Bottom located on the Foil Plant Research Facility in Starkville, MS. At time of application, cotton plants had approximately three visible true leaves. Plot size was 4 rows by 40 ft long on 38 inch centers. Statistical design was a randomized complete block with 4 replications. Ten insecticide treatments were evaluated against an untreated check (UTC). Insecticides were applied with a tractor-mounted sprayer calibrated to deliver 10.0 gpa at 60 psi through TX-6 Hollow Cone nozzles (2 per row). Treatments were applied on 25 Jun. Plots were sampled at 3 DAT and again at 7 DAT. Each plot was sampled by randomly cutting 5 plants from the center two rows and totaling the number of adult and immature thrips per 5 plants. Means for immature thrips were log transformed in order to homogenize data within treatments. Data was analyzed with ANOVA and means were separated using Fisher’s Protected LSD (P ≤ 0.05). There were no significant differences in mean immature thrips among treatments and the UTC (Table 1). There was no significant difference among treatments at 7 DAT, however, Radiant + Dyne-Amic and Orthene + Non-ionic surfactant did have numerically fewer immature thrips than other treatments. 1 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F44 Table 1. Average Number of Immature Thrips/5 plants Treatment/ Rate lb Formulation AI/Acre 4 DAT 1 5 DAT 2 Radiant SC 0.012 2.8a 7.3b Radiant SC 0.012 + Crop oil Concentrate 0.5% 6.3a 4.3b Radiant SC 0.012 + Metholated Seed Oil 0.5% 4.8a 4.8b Radiant SC 0.012 + Non-ionic Surfactant 0.5% 2.5a 5.8b Radiant SC 0.012 + Dyne-Amic 0.5% 3.8a 2.0b Orthene 97 SP 0.25 + Non-ionic Surfactant 0.5% 6.5a 1.0b Bidrin 8 EC 0.2 Non-ionic Surfactant 0.5% 2.0a 5.3b Dimethoate 4 EC 0.2 + Non-ionic Surfactant 0.5% 5.3a 8.5b Karate 2.08 Z 0.024 + Non-ionic Surfactant 0.5% 16.5a 6.5b Admire Pro 0.061 Non-ionic Surfactant 0.5% 3.3a 4.5b Untreated Control 19.3a 23.8a LSD (0.05) 13.04 7.64 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05). *Rates expressed as a volume/volume (%v/v)

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Arthropod Management TestsOxford University Press

Published: Jan 1, 2013

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