Browse resources Displaying 1 - 3 of 3 resources Water Quality WSU publications concerning water quality when irrigating. May 2018 | Online resource Irrigation Technology WSU publications related to irrigation technology. May 2018 | Online resource Credit: Tom Gentle (Cropped from original) Pacific Northwest irrigation resources Washington, Idaho and Oregon Extension publications providing information on irrigation and water. Some examples of these are center pivot info, chemigation/fertigation assistance and crop irrigation charts. May 2018 | Online resource