University of California

Efficacy of cotton defoliants


Thomas A. Kerby
Stephanie Johnson
Hidemi Yamada

Authors Affiliations

Thomas A. Kerby is University of California Cooperative Extension Cotton Specialist, stationed at the USDA Cotton Research Station, Shafter; Stephanie Johnson is Staff Research Associate, stationed at the USDA Cotton Research Station, Shafter; Hidemi Yamada is Staff Research Associate, UC West Side Field Station, Five Points.

Publication Information

Hilgardia 38(9):24-25. DOI:10.3733/ca.v038n09p24. September 1984.

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Chemical defoliation is a standard practice on all 1.31 million acres of cotton grown in California (10-year average acreage). In many cases, a second treatment is required to prepare plants for harvest. Irrigation and nitrogen management have a large effect on the amount of vegetative growth produced. Cultural practices that stimulate growth reduce the effectiveness of chemicals.

Kerby T, Johnson S, Yamada H. 1984. Efficacy of cotton defoliants. Hilgardia 38(9):24-25. DOI:10.3733/ca.v038n09p24
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