Abstract
The results of study of phosphorus nutrition of spring wheat on highly phosphatesupplied soil are presented. The high ability of the soil to satisfy the plants' need for phosphorus has been established. The main factor determining the availability of soil phosphates, phosphorus accumulation in plants and grain productivity was moisture supply. The strongest curvilinear correlation (R2 0,36) between available phosphate content in soil and water content in soil 0–20 cm layer was observed. Concentration of total and mineral phosphorus in plants had reliable curvilinear relation with water content in soil 0–50 cm layer – R2 0,72 and 0,37 respectively.
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