EFFICIENCY OF FERTILIZERS IN RELATION TO MOBILE PHOSPHATE SUPPLY OF PODZOLUVISOL LOAMY SOIL

Abstract

The results of field experiments with different rates of fertilizers under barley, oat and spring rapeseed in relation to mobile phosphate supply of Podzoluvisol loamy soil are presented. The grain yield of tested crops as well as crop yield response to N and K fertilizers were significantly increased on the plots with high level of P content in soil. The crop yield responses to P fertilizer conversely decreased on the soil with high P content however responses were sufficiently great at optimal doses of P fertilizer.