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Nitrogen Rich Strips for Wheat, Corn, and Other Crops

The optimum nitrogen (N) rate for cereal crops changes dramatically from year to year. Again, the optimum N rate for cereal crops changes dramatically from year to year. It bears repeating because many producers continue to apply the same amount of N, year after year. Farmers are well aware that their yield levels change significantly, but they are not aware that the yield response to additional N changes too (magnitude of response if N is applied). Combined, N responsiveness and yield level dictate precisely how much N should be applied. What farmers have to embrace is that their N use efficiency changes every year too. The GreenSeeker sensor technology, developed at Oklahoma State University, predicts yield potential from NDVI readings measured during the growing season. Using N Rich Strips applied at planting or shortly after, the optimum topdress N rate for maximum yields and economic profitability can be determined. Even if producers don’t use the GreenSeeker sensor, the N Rich Strip by itself remains an incredibly valuable tool for deciphering whether or not mid-season N is needed. Applying N Rich Strips, over time and measuring responsiveness with the GreenSeeker sensor, will net producers more than $25.00 per acre.

 

This circular discusses using nitrogen strips to help determine if your crop is at optimum efficiency.

 

E-1022

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