Maximizing Corn Yields with Optimal Nitrogen Application

Nitrogen is a crucial factor for corn yields, according to University of Illinois crop physiologist Fred Below.

'You can't do without it,' he said, emphasizing its importance. Despite rising anhydrous ammonia prices that averaged $1,057 a ton in July, farmers know they need nitrogen.

The peak uptake period for corn is between V8 and R2, and a 230-bushel crop uses 5 pounds of nitrogen per day for about 21 days. Below recommends applying 60% of the nitrogen up front and sidedressing the other 40% to ensure it's available when needed.

Using a nitrogen calculator can help determine the optimal application rate, which depends on factors such as corn prices and nitrogen product costs. The University of Illinois' maximized return to nitrogen (MRTN) calculator provides personalized recommendations based on specific conditions.