Nitrogen Management for Cotton
Fertilizer nitrogen (N) represents a crop production input that should be used carefully in an effort to manage for optimum efficiency, high yields, and earliness. The most efficient use of fertilizer N (a high proportion of fertilizer N actually taken up and utilized by the crop) is achieved by providing the N at a time that the plant can use it. The N requirements of a cotton crop basically follow the same pattern as flowering or fruiting on the crop. Accordingly, N demand is very low early in the season, picks up through early fruiting, reaches a peak demand at peak bloom, and gradually declines as the crop approaches and proceeds through cut-out.
Reviewed 06/2015. Originally published 02/2001