During the experiment performed at the mountain cereal complex, three types of winter wheat's reactions to NPK fertilizing in doses of 210 and 330 kg/ha were observed. The mineral fertilizing in a dose of 210 kg NPK/ha influenced the crop growth of wheat in comparison with the control area by 1.33 t/ha. A higher level of NPK fertilizing = 330 kg/ha influenced the growth of the grain yield by 1,94 t/ha. On average the straw crop increased after mineral fertilizing from 3.58 t at the control area to 5.75 and 6.95 t/ha, depending on the NPK dose. Among the grown types, the Parada gave the best crop (on average it was 3.60 t/ha), the smallest crop was the Liwilla with an average 2.85 I of grain crop from a hectare. The use of NPK fertilizing caused an increase .if the protein level in wheat grain, on average by 0.88-1.74%. Emika, out of the three types of wheat, had the highest protein content, 'the factors that limited the possibility of getting hogher crop yield of wheat were the winter losses and low grain number in a head. Mineral fertilization (NPK) limited the winter losses and had a beneficial effect on the productive growth of wheat.
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