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Trifloxysulfuron–Insecticide Combination Effects on Broadleaf Weed and Thrips (Frankliniella spp.) Control in Cotton

Published online by Cambridge University Press:  20 January 2017

Donnie K. Miller ,
Robert G. Downer ,
Eugene Burris ,
John W. Wilcut  and
Donald R. Cook
Donnie K. Miller*
Affiliation:
Northeast Research Station, LSU AgCenter, P.O. Box 438, St. Joseph, LA 71366
Robert G. Downer
Affiliation:
Department of Experimental Statistics, LSU AgCenter, 161 Ag. Admin. Bldg., Baton Rouge, LA 70803
Eugene Burris
Affiliation:
Northeast Research Station, LSU AgCenter, P.O. Box 438, St. Joseph, LA 71366
John W. Wilcut
Affiliation:
Crop Science Department, North Carolina State University, Box 7620, Raleigh, NC 27695-7620
Donald R. Cook
Affiliation:
Northeast Research Station, LSU AgCenter, P.O. Box 438, St. Joseph, LA 71366
*
Corresponding author's E-mail: dmiller@agctr.lsu.edu
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Abstract

Coapplication of herbicides and insecticides affords growers an opportunity to control multiple pests with one application given that efficacy is not compromised. Trifloxysulfuron was applied at 5.3 g ai/ha both alone and in combination with the insecticides acephate (370 g ai/ha), oxamyl (370 g ai/ha), lambda-cyhalothrin (34 g ai/ha), acetamiprid (45 g ai/ha), thiamethoxam (45 g ai/ha), endosulfan (379 g ai/ha), indoxacarb (123 g ai/ha), emamectin benzoate (11 g ai/ha), methoxyfenozide (67 g ai/ha), spinosad (75 g ai/ha), and pyridalyl (112 g ai/ha) to determine the effects of coapplication on control of some of the more common and/or troublesome broadleaf weeds infesting cotton. In addition, the insecticides acephate, oxamyl, lambda-cyhalothrin, thiamethoxam, and endosulfan, at the rates listed above, were applied either alone or in combination with trifloxysulfuron at 7.9 g/ha to assess the effects of coapplication on thrips control. Control of hemp sesbania (insecticides oxamyl and lambda-cyhalothrin), sicklepod (insecticides methoxyfenozide and pyridalyl), redroot pigweed (insecticides thiamethoxam, methoxyfenozide, spinosad, and pyridalyl), and smooth pigweed, Palmer amaranth, and common lambsquarters (all insecticides) with trifloxysulfuron may be reduced when coapplied with the indicated insecticides for each species. Control of pitted, tall, ivyleaf, and entireleaf morningglory with trifloxysulfuron was not affected by the insecticides evaluated. Coapplication of trifloxysulfuron with the insecticides evaluated also resulted in no negative effects on thrips control.

Keywords

Acephateacetamipridemamectin benzoateendosulfanindoxacarblambda-cyhalothrinmethoxyfenozidepyridalylspinosadthiamethoxamtrifloxysulfuroncommon lambsquarters, Chenopodium album L. # CHEALcotton, Gossypium hirsutum L. ‘DP448B’entireleaf morningglory, Ipomoea hederacea var. integriuscula Gray # IPOHGhemp sesbania, Sesbania exaltata (Raf.) Rydb. ex A. W. Hill # SEBEXivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHEPalmer amaranth, Amaranthus palmerii L. # AMAPApitted morningglory, Ipomoea lacunosa L. # IPOLAprickly sida, Sida spinosa L. # SIDSPredroot pigweed, Amaranthus retroflexus L. # AMAREsicklepod, Senna obtusifolia (L.) Irwin and Barnaby # CASOBsmooth pigweed, Amaranthus hybridus L. # AMACHtall morningglory, Ipomoea purpurea (L.) Roth # PHPBUthrips, Frankliniella sppHerbicide–insecticide combinationspesticide compatibilityDAT, days after treatmentPOST, postemergence
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 3 , September 2005 , pp. 762 - 767
Copyright
Copyright © Weed Science Society of America 

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