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Tobacco Response to Residual and In-Season Treatments of CGA-362622

Published online by Cambridge University Press:  20 January 2017

Dunk Porterfield ,
Loren R. Fisher ,
John W. Wilcut  and
W. David Smith
Dunk Porterfield
Affiliation:
Crop Science Department, Box 7620, North Carolina State University, Raleigh, NC 27695-7620
Loren R. Fisher
Affiliation:
Crop Science Department, Box 7620, North Carolina State University, Raleigh, NC 27695-7620
John W. Wilcut*
Affiliation:
Crop Science Department, Box 7620, North Carolina State University, Raleigh, NC 27695-7620
W. David Smith
Affiliation:
Crop Science Department, Box 7620, North Carolina State University, Raleigh, NC 27695-7620
*
Corresponding author's E-mail: john_wilcut@ncsu.edu
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Abstract

Experiments were conducted to determine tobacco tolerance to CGA-362622 applied pretransplant (PRE-T) and postemergence (POST) to tobacco and applied the previous year preemergence (PRE) and POST to cotton. CGA-362622 applied at 3.75 or 7.5 g ai/ha PRE-T injured ‘K326’ flue-cured tobacco 1%, whereas POST treatments resulted in 4 to 5% injury. Tobacco injury was transient with no mid- or late-season injury noted. Tobacco yields from all CGA-362622 POST treatments were not different from the nontreated weed-free check. Tobacco treated with 7.5 g/ha CGA-362622 PRE-T yielded greater than nontreated weed-free tobacco or tobacco treated with CGA-362622 POST. When grown in rotation, tobacco was not injured, and yields were not influenced by CGA-362622 applied PRE or POST to cotton the previous year.

Keywords

CGA-362622cotton, Gossypium hirsutum L.tobacco, Nicotiana tabacum L.Carryovercrop injurysulfonylurea herbicideALS, acetolactate synthaseLAYBY, late POST-directedPOST, postemergencePPI, preplant incorporatedPRE, preemergencePRE-T, pretransplant
Type
Research
Information
Weed Technology , Volume 19 , Issue 1 , March 2005 , pp. 1 - 5
Copyright
Copyright © Weed Science Society of America 

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