THIS SIMPLE RIG HELPED SLASH NITROGEN USE AND REDUCE RUNOFF CONCERNS.For Jason Sheehan, cutting input costs was the main impetus for moving to variable-rate fertilizer application and N sidedressing. Reducing the potential for any off-site movement was a close second.The Minnesota native relocated to the West a decade ago after marrying, and now operates a 3,000-cow dairy with wife Karen and her parents Tony and Brenda Veiga near Sunnyside, in southern Washington's Yakima Valley. In recent years, concerns over nitrate levels in the area's groundwater, from a variety of sources, led to the creation of a Groundwater Management Area (GWMA) in that part of the state.
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