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Insecticides Modify Cotton (Gossypium hirsutum) Response to Clomazone

Published online by Cambridge University Press:  12 June 2017

Alan C. York
Affiliation:
Dep. Crop Sci., N.C. State Univ., Raleigh, NC 27695-7620
David L. Jordan
Affiliation:
Dep. Agron., Univ. Ark., Fayetteville, AR 72703
Robert E. Frans
Affiliation:
Dep. Agron., Univ. Ark., Fayetteville, AR 72703

Abstract

Field experiments were conducted to determine if aldicarb, disulfoton, or phorate applied in-furrow at 0.84 or 1.12 kg ai ha–1 affected cotton response to clomazone applied PPI or PRE at rates ranging from 0 to 1.12 kg ai ha–1. Disulfoton and phorate greatly reduced clomazone-induced chlorosis, stunting, and death of cotton seedlings. Compared with no insecticide or with dimethoate applied POST, aldicarb did not affect cotton response to clomazone. A clomazone rate by insecticide interaction was not observed for cotton yield. Clomazone reduced cotton yield at one of five locations. Insecticides affected yield at three locations, where highest yields were from cotton treated with aldicarb. In a separate experiment with 0.56, 1.12, and 2.24 kg ha–1 of phorate applied in-furrow and 1.12 kg ha–1 of clomazone applied PPI, phorate at all rates protected cotton from clomazone phytotoxicity.

Information

Type
Research
Copyright
Copyright © 1990 by the Weed Science Society of America 

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