Studies conducted on ordinary chernozems in two districts of Rostov region indicate that a routine soil test method for available phosphorus adequately characterizes the conditions of plant nutrition with phosphorus. According to the results, the optimization of mineral nutrition of maize grown in relatively dry soil and climatic conditions of the region contributes to a significant increase in its productivity. A high phosphorus efficiency in maize plants is observed.
available forms of phosphorus, optimization of mineral nutrition, fertility of chernozems, maize productivity, fertilizer application system
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