Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

EVALUATION OF INSECTICIDES AGAINST COTTON APHIDS ON COTTON, 2011

EVALUATION OF INSECTICIDES AGAINST COTTON APHIDS ON COTTON, 2011 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.F37 (F37) COTTON: Gossypium hirsutum L., ‘DeltaPine 1133 BGII/RF’ K. D. Emfinger LSU Agricultural Center Macon Ridge Research Station 212A Macon Ridge Road Winnsboro, LA 71295 Phone: 318-435-2157 Fax: 318-435-2133 E-mail: kemfinger@agcenter.lsu.edu Shelby Williams E-mail: twilliams@agcenter.lsu.edu Jared Chapman E-mail: jchapman@agcenter.lsu.edu B. Rogers Leonard E-mail: rleonard@agcenter.lsu.edu Cotton aphid: Aphis gossypii Glover Selected insecticides were evaluated for control of cotton aphid at the Macon Ridge Research Station near Winnsboro, LA (Franklin Parish). Cotton seed was planted into a Gigger silt loam soil on 21 Apr. Plot size was four rows (centered on 40-inches) and 50 ft. long. Treatments were placed in a RCBD with four replications. Thirty plant terminals (main stem including and above first one-half dollar diameter leaf) infested with cotton aphids were tagged prior to insecticide applications. Insecticides were applied on 15 Jun and were applied with a CO -charged backpack spray system calibrated to deliver 10 gpa through TeeJet® TX-8 hollow cone nozzles (2/row) at 32 psi. Treatment efficacy against cotton aphids was measured by harvesting 10 tagged plant terminals per plot at 2 and 7 DAT and transporting in glass jars on ice to a laboratory. Plant samples were processed using whole-plant washing procedures to remove aphids. Cotton aphids were counted using a dissecting microscope. Data were subjected to ANOVA and means separated according to LSD. No rainfall occurred during this test. All insecticide treatments except Centric significantly reduced the number of cotton aphids compared to that in the non-treated control at 2 and 7 DAT. No phytotoxicity was observed in any of the insecticide-treated plots in these three tests. This research was supported by industry gifts of products and research funding. Table 1 Cotton aphids / 10 plants Treatment / Rate, fl formulation oz /acre 2 DAT 7 DAT Intruder 70WG 0.7 5.3d 6.0b Centric 40WG 2.0 99.0a 65.8a Belay 2.13SC 4.0 41.5b 24.0b Imidacloprid 4F 0.062 41.8b 14.5b Radiant 1SC 0.022 32.3bc 23.0b Carbine 50WP 2.0 16.0cd 3.5b Transform 50WP 0.022 6.3d 2.3b Intruder 70WSP 1.1 10.0cd 3.5b Non-treated ------ 118.0a 81.5a P>F (ANOVA) <0.001 <0.001 Means within columns followed by a common letter are not significantly different (LSD, P=0.05). lb AI/acre. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

EVALUATION OF INSECTICIDES AGAINST COTTON APHIDS ON COTTON, 2011

Download PDF
1 page

Loading next page...
 
/lp/oxford-university-press/evaluation-of-insecticides-against-cotton-aphids-on-cotton-2011-fVUw9glEru

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.4182/amt.2012.F37
Publisher site
See Article on Publisher Site

Abstract

Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.F37 (F37) COTTON: Gossypium hirsutum L., ‘DeltaPine 1133 BGII/RF’ K. D. Emfinger LSU Agricultural Center Macon Ridge Research Station 212A Macon Ridge Road Winnsboro, LA 71295 Phone: 318-435-2157 Fax: 318-435-2133 E-mail: kemfinger@agcenter.lsu.edu Shelby Williams E-mail: twilliams@agcenter.lsu.edu Jared Chapman E-mail: jchapman@agcenter.lsu.edu B. Rogers Leonard E-mail: rleonard@agcenter.lsu.edu Cotton aphid: Aphis gossypii Glover Selected insecticides were evaluated for control of cotton aphid at the Macon Ridge Research Station near Winnsboro, LA (Franklin Parish). Cotton seed was planted into a Gigger silt loam soil on 21 Apr. Plot size was four rows (centered on 40-inches) and 50 ft. long. Treatments were placed in a RCBD with four replications. Thirty plant terminals (main stem including and above first one-half dollar diameter leaf) infested with cotton aphids were tagged prior to insecticide applications. Insecticides were applied on 15 Jun and were applied with a CO -charged backpack spray system calibrated to deliver 10 gpa through TeeJet® TX-8 hollow cone nozzles (2/row) at 32 psi. Treatment efficacy against cotton aphids was measured by harvesting 10 tagged plant terminals per plot at 2 and 7 DAT and transporting in glass jars on ice to a laboratory. Plant samples were processed using whole-plant washing procedures to remove aphids. Cotton aphids were counted using a dissecting microscope. Data were subjected to ANOVA and means separated according to LSD. No rainfall occurred during this test. All insecticide treatments except Centric significantly reduced the number of cotton aphids compared to that in the non-treated control at 2 and 7 DAT. No phytotoxicity was observed in any of the insecticide-treated plots in these three tests. This research was supported by industry gifts of products and research funding. Table 1 Cotton aphids / 10 plants Treatment / Rate, fl formulation oz /acre 2 DAT 7 DAT Intruder 70WG 0.7 5.3d 6.0b Centric 40WG 2.0 99.0a 65.8a Belay 2.13SC 4.0 41.5b 24.0b Imidacloprid 4F 0.062 41.8b 14.5b Radiant 1SC 0.022 32.3bc 23.0b Carbine 50WP 2.0 16.0cd 3.5b Transform 50WP 0.022 6.3d 2.3b Intruder 70WSP 1.1 10.0cd 3.5b Non-treated ------ 118.0a 81.5a P>F (ANOVA) <0.001 <0.001 Means within columns followed by a common letter are not significantly different (LSD, P=0.05). lb AI/acre.

Journal

Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2012

There are no references for this article.