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Defoliation Screening Studies in California Acala Cotton

Steve Wright, Bruce Roberts, Ron Vargas, Manuel Jimenez, Jr., Tome' Martin Duvall


Several defoliants were evaluated for their effect on defoliation, desiccation, regrowth, and lint yield for Maxxa Acala cotton during a three year period. Treatments with Ginstar resulted in the highest defoliation followed by treatments with Def or Folex tankmixes with Prep,Dropp, or Accelerate. The addition of paraquat or Cacadylic Acid to Sodium Chlorate slightly enhanced defoliation.

Treatments with Ginstar and treatments with an O.P. plus Dropp or Accelerate increased desiccation on remaining leaves. Ginstar and Prep treatments slightly enhanced boll opening at 7 DAT but differences were minor by 14 DAT. Treatments with Roundup had the least regrowth, followed by Ginstar and Dropp combinations with an O.P. Lint yields were similar in all treatments.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pg. 1223
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998