Influence of nitrogen and mineral fertilizer application on technological quality indicators of winter wheat harvest and grain in repeated soy crop

¹ Tashkent State Agrarian University, Tashkent, 100140, Uzbekistan
² Andijan Institute of Agriculture and Agrotechnologies, Andijan, 160020, Uzbekistan

^* Corresponding author: a.iminov@tdau.uz

Abstract

Pre-sowing nitrogen treatment of Soybean grown as a repeated crop had a positive effect on the grain yield of winter wheat. In the control, which was not treated with nitrogen before planting soybean seeds, winter wheat in the next year provided a higher grain yield of 1.7-2.1 quintals/ha compared to treated options. Also, the use of P90 K60 fertilizers in Soybean grown as a repeated crop helped to increase the grain yield by 2.8-2.9 quintals/ha compared to the control options where no mineral fertilizers were applied. It was determined that the most optimal norm of mineral fertilizers N60 P90 K60 kg/ha was used in the maintenance of Soybean seeds grown as a repeated crop, inoculated with nitragin and in non-inoculated controls. Compared to the control options, the protein content of winter wheat grain was higher by 0.7-0.8%, the gluten content by 1.1-1.3%, and the natural index of the grain by 30.9-32.1 g/l. The highest yields of winter wheat were inoculated with nitragin prior to planting soybean seeds. In the control, the norm of mineral fertilizers N60 P90 K60 kg/ha was used as a follow-up crop, and it was taken from the variant treated with winter wheat, and it was 61.7 quintals/ha. It was determined that the amount of protein was 14.2-15.0%, the amount of gluten was 27.9-28.4%, and the natural (volumetric) weight of the grain was 806.4-813.1 g/l.