Published in Scientific Papers. Series A. Agronomy, Vol. LXI, Issue 1
Written by Elena ROȘCULETE, Cătălin Aurelian ROȘCULETE
In the paper, it is presented the influence of the combined fertilization of phosphorus-potassium and phosphorusnitrogen on the content of wheat grains in certain nutritive elements. The experience, in a three year stationary rotation (soybean-wheat-corn), was located on a baticalcaric argic chernozem and the research aimed at studying the influence of the combined application of different doses of nitrogen, phosphorus and potassium, at wheat culture. The wheat grains were determined in terms of their nitrogen, phosphorus, potassium, calcium, magnesium, copper, manganese and zinc content. The determinations were performed on the fertilized variants with P0, P40, P80, P120, on constant grounds K0, K80, respectively N0, N100 and N200. The application of progressive doses of phosphorus on constant levels of nitrogen and potassium, has led to the increase of nitrogen, phosphorus, potassium, magnesium and manganese content, but to the decrease in calcium, copper and zinc content in all analyzed samples. It is also noted that the application of the P120 dose did not result in increases for the content of the determined nutrients, and moreover, they often resulted in decreases in their content.
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