EFFICACY OF SELECTED FOLIAR INSECTICIDES AGAINST TARNISHED PLANT BUGS IN COTTON,2012 (Test 5)
EFFICACY OF SELECTED FOLIAR INSECTICIDES AGAINST TARNISHED PLANT BUGS IN COTTON,2012 (Test 5)
Adams, Brian P.; Catchot, Angus L.; Von Kanel, Ben; Whalen, Adam; Bao, Dung; Bibb, Jenny; Lanford, Kevin
2013-01-01 00:00:00
Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F27 (F27) COTTON: Gossypium hirsutum L., ‘D&PL 0924 BGII’ EFFICACY OF SELECTED FOLIAR INSECTICIDES AGAINST TARNISHED PLANT BUGS IN COTTON, 2012 (Test 5) Brian P. Adams 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: bpa31@msstate.edu Angus L. Catchot E-mail: acatchot@entomology.msstate.edu Ben Von Kanel E-mail: mbv7@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 Tarnished plant bug (TPB): Lygus lineolaris (Palisot de Beauvois) On 20 Jul, a foliar insecticide efficacy trial was conducted for control of TPB in a commercial field of ‘D&PL 0924 BGII’cotton in Glendora, Mississippi. At time of application, cotton plants were approximately in the third week of bloom. Plot size was 4 rows by 40 ft long on 38 inch centers. Statistical design was a RCB with 4 replications. 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). Eight insecticide treatments along with an untreated control (UTC) were evaluated. The first application was made on 20 Jul and the second application was made 26 Jul. Plots were sampled at 3 DAT1), 6 DAT1, 4 DAT2, and 10 DAT2. Efficacy was evaluated by taking two black drop clothes (5-row feet each) from the center two rows of each plot and totaling the number TPB nymphs and adults from each drop cloth sample. TPB nymph data was analyzed with ANOVA and means were separated using a Fisher’s Protected LSD (P ≤ 0.05). All treatments had significantly fewer TPB nymphs at the first sample date, 3 DAT1, than the untreated control, and all treatments were significantly better than the Leverage 360 treatment (Table 1). At 6 DAT1, 4 DAT2, and 10 DAT2 populations crashed and no insecticide treatments provided significantly better TPB control than the untreated control due to low numbers. 1 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F27 Table 1. Average Number of Tarnished Plant Bugs/plot Treatment/ Rate lb Formulation AI/Acre 3 DAT 1 6 DAT 1 4 DAT 2 10 DAT 2 Bidrin 8 EC 0.4 + Discipline 2 EC 0.1 8.8c 1.5a 1.0a 0.5a Endigo 2.06 EC 0.081 9.5c 1.0a 0.0a 0.3a Leverage 360 0.075 + NIS (.25% v/v) 18.8b 2.5a 0.5a 0.0a Athena 0.87 EW 0.092 9.0c 1.0a 1.3a 0.0a Diamond 0.83 EC 0.039 + Bidrin 8 EC 0.5 7.3c 0.5a 0.8a 0.0a Transform 50 WG 0.047 + Bidrin 8 EC 0.5 7.5c 0.8a 0.3a 0.0a Bidrin 8 EC + 0.4 Discipline 2 EC 0.1 + Diamond 0.83 EC 0.039 8.3c 0.5a 0.3a 0.0a Bidrin 8 EC 0.4 + Discipline 2 EC 0.1 + Transform 50 WG 0.047 4.8c 0.3a 0.3a 0.3a Untreated Control 24.0a 1.8a 1.8a 0.5a LSD (0.05) 4.08 1.80 1.50 0.66 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05).
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngArthropod Management TestsOxford University Presshttp://www.deepdyve.com/lp/oxford-university-press/efficacy-of-selected-foliar-insecticides-against-tarnished-plant-bugs-1pCTiQGkD3
EFFICACY OF SELECTED FOLIAR INSECTICIDES AGAINST TARNISHED PLANT BUGS IN COTTON,2012 (Test 5)
Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F27 (F27) COTTON: Gossypium hirsutum L., ‘D&PL 0924 BGII’ EFFICACY OF SELECTED FOLIAR INSECTICIDES AGAINST TARNISHED PLANT BUGS IN COTTON, 2012 (Test 5) Brian P. Adams 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: bpa31@msstate.edu Angus L. Catchot E-mail: acatchot@entomology.msstate.edu Ben Von Kanel E-mail: mbv7@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 Tarnished plant bug (TPB): Lygus lineolaris (Palisot de Beauvois) On 20 Jul, a foliar insecticide efficacy trial was conducted for control of TPB in a commercial field of ‘D&PL 0924 BGII’cotton in Glendora, Mississippi. At time of application, cotton plants were approximately in the third week of bloom. Plot size was 4 rows by 40 ft long on 38 inch centers. Statistical design was a RCB with 4 replications. 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). Eight insecticide treatments along with an untreated control (UTC) were evaluated. The first application was made on 20 Jul and the second application was made 26 Jul. Plots were sampled at 3 DAT1), 6 DAT1, 4 DAT2, and 10 DAT2. Efficacy was evaluated by taking two black drop clothes (5-row feet each) from the center two rows of each plot and totaling the number TPB nymphs and adults from each drop cloth sample. TPB nymph data was analyzed with ANOVA and means were separated using a Fisher’s Protected LSD (P ≤ 0.05). All treatments had significantly fewer TPB nymphs at the first sample date, 3 DAT1, than the untreated control, and all treatments were significantly better than the Leverage 360 treatment (Table 1). At 6 DAT1, 4 DAT2, and 10 DAT2 populations crashed and no insecticide treatments provided significantly better TPB control than the untreated control due to low numbers. 1 Arthropod Management Tests 2013, Vol. 38 doi: 10.4182/amt.2013.F27 Table 1. Average Number of Tarnished Plant Bugs/plot Treatment/ Rate lb Formulation AI/Acre 3 DAT 1 6 DAT 1 4 DAT 2 10 DAT 2 Bidrin 8 EC 0.4 + Discipline 2 EC 0.1 8.8c 1.5a 1.0a 0.5a Endigo 2.06 EC 0.081 9.5c 1.0a 0.0a 0.3a Leverage 360 0.075 + NIS (.25% v/v) 18.8b 2.5a 0.5a 0.0a Athena 0.87 EW 0.092 9.0c 1.0a 1.3a 0.0a Diamond 0.83 EC 0.039 + Bidrin 8 EC 0.5 7.3c 0.5a 0.8a 0.0a Transform 50 WG 0.047 + Bidrin 8 EC 0.5 7.5c 0.8a 0.3a 0.0a Bidrin 8 EC + 0.4 Discipline 2 EC 0.1 + Diamond 0.83 EC 0.039 8.3c 0.5a 0.3a 0.0a Bidrin 8 EC 0.4 + Discipline 2 EC 0.1 + Transform 50 WG 0.047 4.8c 0.3a 0.3a 0.3a Untreated Control 24.0a 1.8a 1.8a 0.5a LSD (0.05) 4.08 1.80 1.50 0.66 Means within a column sharing the same letter are not significantly different (LSD; P > 0.05).
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