Whitefly Management in Arizona Cotton 1996
Ellsworth, P.C., T.J. Dennehy, and R.L. Nichols. 1996 (Rev. 1/2001). Whitefly Management in Arizona, 1996. IPM Series No. 3. Publ. No. 196004. University of Arizona, College of Agriculture and Life Sciences, Cooperative Extension, Tucson, Arizona. URL: http://cals.arizona.edu/crops/cotton/insects/wf/cibroch.html
Integrated Whitefly Management
Host Plant Sanitation
Host Crop Sequence
Cotton Management & Varieties
Scouting and Decision-making
Chemical Control & Resistance ManagementIncreased resistance to insecticides was observed in Arizona whitefly populations in the 1995 season. Management strategies which have been effective in the past may not work in 1996. The Southwest Whitefly Resistance Management Working Group has developed a three-stage chemical use program that represents the collective experience of Arizona pest managers for dealing with this problem.
This program incorporates new chemistry which will require different management practices within a long-term resistance management program. The basic strategy is to initiate whitefly chemical control with insect growth regulators (IGRs), to postpone the use of all pyrethroids until the end of the control period limiting the pyrethroid class to just two uses, and to use no active ingredient more than twice per season. We recommend sampling both nymphs and adult whiteflies, and using effective chemistry and recommended action thresholds. Sampling plans are explained in detail in University of Arizona, IPM Series No. 2 & 6. A listing of efficacious chemistry for each stage is provided in the 1996 update of Whiteflies in Arizona: Pocket Guide
Based on information from:
Arizona Cotton Growers Association
Support for printing the original of this publication provided by Cotton Incorporated.
Issued in furtherance of Cooperative Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, James A. Christenson, Director Cooperative Extension, College of Agriculture and Life Sciences, The University of Arizona.
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