Effectiveness of Long-Acting Urea in the Growing of Spring Wheat

The results of a series of vegetation experiments are presented in which the effect of urea coated with calcium dihydrogen phosphate granules on the formation of a spring wheat crop was studied. It was shown that encapsulated urea, in comparison with its usual form, provided an increase in the yield of spring wheat grain by 9–13%. The coating of urea granules with calcium dihydrogen phosphate contributed to a more uniform release of fertilizer nitrogen, increasing the efficiency of its use by plants by 10–13%. It was found that the effectiveness of encapsulated urea is directly dependent on the thickness of the coating granules.