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Washington State University Extension has released a new irrigation manual for vineyards, clarifying irrigation options and strategies for juice and wine grape producers in Washington State.

“Irrigation Basics for Eastern Washington Vineyards” is the title of the bulletin that seeks to help growers better understand what’s behind grape irrigation. Two companion pocket manuals are also available: “Estimating Soil Moisture by Feel and Appearance,” published by the U.S. Department of Agriculture’s Natural Resources

Conservation Service, and from the National Center for Appropriate Technology, “Water Management: the Pacific Northwest Irrigator’s Pocket Guide.”

Both manuals and the new bulletin are available through Washington State ­University’s Extension Irrigation Web site at