BHawk Farmer • Black Hawk County • 2026-04-01
Checking my 4-inch soil temp probe this morning and we're at 45°F and rising. I've got custom applicator booked for April 18th. Worried about volatilization losses if we go too early but also afraid of getting pushed back by wet weather. What are you guys doing? I'm running 150 lbs N on corn-after-corn ground.
ISU recommendation is to wait for sustained 50°F at 4 inches before anhydrous. We're forecasting soil temps reaching 50°F in central/northeast Iowa by April 15–17. Waiting a week could reduce volatilization losses by 10–15%.
Pulled the trigger last Thursday when we had 3 days of 50+ soil temps. Applied with Instinct II nitrification inhibitor. Hope it holds.
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