Continuous corn is the most common irrigated crop sequence in southwest Nebraska. Although rotating to other crops, such as soybeans, can mitigate some production issues of continuous corn and often boost the next year’s corn yield, larger adoption of soybeans has not readily occurred in this area.
Land application of manure and other organic materials supplies much N to Nebraska’s crop production. In contrast to most other nutrients applied in organic materials, the availability of manure-N and its fertilizer-N substitution value is not well-predicted.
Corn and wheat growers across Nebraska will be able to gain hands-on experience with cutting-edge technologies that will allow them to more precisely identify the amount of nitrogen fertilizer their crops need, while preventing excess nitrates from ending up in Nebraska’s water supply.