Indiana corn: Tough planting decisions ahead
The first roots of corn planted directly over the bands where a full rate of anhydrous ammonia was applied can suffer ammonia toxicity, especially in sandy and cool soils, areas where anhydrous was applied shallowly and when there has been little rainfall between the nitrogen application and seedling emergence.
Vyn encouraged growers to pay close attention to where they apply the fertilizer and to keep it away from the intended cornrows. Real-time kinetic (RTK) guidance systems can help farmers both apply fertilizer and plant more precisely, and this can be especially advantageous when there is less than 10 days between pre-plant anhydrous ammonia application and planting.
Another tip Vyn had for growers was to avoid doing unnecessary tillage just for the sake of being in the fields.
“There’s no sense in doing recreational tillage two weeks before planting,” he said. “The best time is a day before planting, so wait until you’re prepared to plant to do tillage. The only reason to do early tillage is if it’s your only weed control, but there are a lot of other weed-control measures."
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