Seeding sowing rates and fertilizers effect on the Gossypium biological development and yield in the Ganja-Dashkasan economic region

The article discusses the application of manure and inorganic fertilizers for Gossypium on irrigated gray-brown (chestnut) soils in the Ganja-Dashkasan Economic Region. The optimal terms of sowing and application of inorganic fertilizers were determined. In the variant of sowing seeds on April 10-15, the Gossypium yield in the control (without fertilizers) variant for 2 years was 32.8 cwt/ha, in the second variant - 35.3 cwt/ha. The increase is 3.5 cwt/ha or 11.3%. In the third option, these figures are equal to 40 cwt/ha; 7.2%; The most optimal result was in the variant with the application of N90P120K90, where the increase compared to the control was 14.4 cwt/ha or 46.8%. As the norms of inorganic fertilizers (N120P150K120) increased, the studied indicators decreased relative to the N90P120K90 variant. On the experimental site, the yield significantly increased at the end of the growing season due to the complex action of inorganic fertilizers during sowing on April 10-15. The largest amount of raw cotton was in the variety N90P120K90.