Combination of ground and foliar application of fertilizer

摘要

Legume grain crops growing under field conditions are supplied exclusively with nutrients from the ground (N, P. K, and S) until the legumes have reached a growth stage in which the seeds are starting to fill, and then during the seed filling period the leaves of the plants are sprayed with an aqueous fertilizer solution providing N, P, K, and S nutrients. Seed yields are appreciably increased. The method is particularly applicable to soybeans.