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Fertilizer is the largest single expense for Western irrigated alfalfa producers. Even at modest rates, fertilizer can easily exceed over $200 per acre annually, with phosphorus (P) and potassium (K) contributing the largest component.
Throughout spring and summer, we’ve seen a variety of weedy plants in irrigated cool-season perennial pastures. Often, the first question we’re asked is, “What do I use to kill ____?”
Timothy hay is Washington state’s largest- and highest-valued grass hay commodity. Timothy hay in the Pacific Northwest is primarily grown for export to Japan to be used for feed in dairy herds. In the lower Columbia Basin, researchers have received yields up to 10 tons per acre per year in three cuttings, but most farmers get two cuttings and receive around 5 to 7 tons per acre per year.
