UI Extension Releases Disease Management Publications

Published online: Oct 18, 2006 University of Idaho
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University of Idaho Extension has released two new publications on crop disease management for Idaho growers, field workers, consultants and chemical dealers.

"Managing Fungicide Resistance," by plant pathologists John Gallian, Jeff Miller and Phil Nolte, addresses methods of managing the application of fungicides to prolong their useful lives. Although the eight-page publication specifically targets sugarbeets and potatoes, the principles it describes apply to all crops.

Fungicide resistance is one of the most significant problems in chemical disease management today. Resistance to formerly effective fungicides has been widely reported, and the authors say all major Idaho crops are at risk. The publication -- which includes color photographs -- explains how fungicide resistance occurs and suggests ways to slow it.

"Late Blight Management Action Plan for Potatoes" was developed in cooperation with the Idaho potato industry and in consultation with late blight experts in the Pacific Northwest and other areas of the United States. The 12- page publication is intended to help the Idaho potato industry reduce potential yield and quality losses and make informed decision about disease prevention, fungicide spray programs and optimizing disease-management costs.

Written by Jeff Miller, Phil Nolte, Nora Olsen, Terry Miller, Bill Bohl and Mike Thornton, it offers best practices for controlling late blight during all phases of planting and harvesting. In addition, it includes color illustrations of infected plants and tubers and rankings of 18 potato varieties for susceptibility.

To download free copies of both publications, click on www.info.ag.uidaho.edu and select Catalog, CALS Publishing Catalog and New Releases for 2006. To order printed copies, call (208) 885-7982 or write calspubs@uidaho.edu. A single copy of "Managing Fungicide Resistance" costs $5.00 plus shipping, handling and sales tax, a single copy of "Late Blight Management Action Plan for Potatoes" costs $6.00 plus shipping, handling and sales tax.

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