INFLUENCE OF DIFFERENT TYPES OF FERTILIZERS ON THE FORMATION OF COTTON PHYTOMASS

Abstract

The values of organic and mineral fertilizers applied on cotton plantations cultivated on irrigated arable lands of gray soils of the Aravan region of the Kyrgyz Republic during the formation of the total cotton phytomass, in other words the more fertilizers are applied, the more cotton phytomass is produced, including root mass and after the harvest of raw cotton, a greater amount of post-harvest plant residues, the main bioenergy material, will enter the soil, serving to replenish soil organic matter.  Variants of the experiment with the use of the recommended doses of mineral fertilizers, as well as 1.5 and 0.5 norms, work to increase both the total phytomass and the yield of raw cotton, and their performance increases with an increase in the amount of mineral fertilizers. In the post-pandemic period of the coronavirus, when there is a sharp rise in prices for mineral fertilizers around the world, the importance of organic and green fertilizers is increasing everywhere, and against this background, the options for the experiment with the use of manure, winter green manure plants and the use of post-harvest plant residues of cotton stalks  represent the main elements of a green economy and have prospects for application on cotton plantations. Variants of our experience with the use of muck, winter green manure plants and the use of post-harvest plant residues showed a sharp increase in the yield of raw cotton compared to the control variant and the additional introduction of organic matter in their composition works to increase the fertility of irrigated arable land.