EFFECT OF HIGH-INPUT CHEMICALS ON THE PHOSPHATE STATUS OF ARABLE SOIL TYPES IN THE OMSK REGION
The soil diversity and pedogenesis features in the Omsk region have been characterized, and the results of studies of soil phosphate status depending on the phosphoric fertilizer rate have been presented. A relationship between the yield of agricultural crops and the application rate of phosphoric fertilizers at different levels of soil supply with available phosphorus has been revealed. The phosphorus budget has been given for the local agriculture at different stages of chemicalization.