“What’s in Your Water Is Costing Your Yield” was presented by Kurt Grimm at the 2025 Lincoln, Nebraska Farms Show and dives into a problem many irrigated farms face without realizing it: irrigation water chemistry is quietly tying up nutrients and limiting yield response.
In this video, Kurt explains how bicarbonates, electrical conductivity (EC), sodium, iron, and manganese impact soil chemistry, fertigation efficiency, and crop nutrient uptake under center pivots and subsurface drip irrigation. You’ll also learn why standard soil tests often miss irrigation-driven issues—and how water samples, rapid soil (saturation paste) testing, and sap analysis help identify nutrient antagonisms before they show up in yield maps.
