INFLUENCE OF MAIN, REPEATED, AND INTERMEDIATE CROPS ON INCREASING COTTON YIELD IN SHORT-ROTATION CROP SYSTEMS

UDC: 631.582:633.51:631.524.82 INFLUENCE OF MAIN, REPEATED, AND INTERMEDIATE CROPS ON INCREASING COTTON YIELD IN SHORT-ROTATION CROP SYSTEMS Mahmudov Utkir Haydarovich Tashkent Branch of Samarkand State University of Veterinary Medicine, Animal Husbandry and Biotechnology, Tashkent, Uzbekistan E-mail: [email protected] ORCID: https://orcid.org/0000-0001-6140-2052 Khalikov Bahodir Meylikovich Cotton Breeding, Seed Production and Growing Agrotechnologies Research Institute ORCID: https://orcid.org/0000-0002-7323-4516 https://doi.org/10.5281/zenodo.19383478 Abstract: The article presents the results of long-term (2022-2025) experiments on the influence of main and repeated crops of crotalaria (crotalaria juncea), intermediate crops of safflower (trifolium alexandrinum) and bermuda grass (trifolium resupinatum), and winter wheat on increasing cotton yields in short-term crop rotations under the conditions of typical sierozem soils of the Tashkent region. The results showed that when sowing crotalaria for one year with subsequent sowing of the intermediate crop shabdar + bersim, when sowing cotton for the second year and sowing winter wheat for the first year with subsequent sowing of the repeated crop crotaly, when sowing the intermediate crop shabdar + bersim, when sowing cotton for the second year and sowing winter wheat for the first year with subsequent sowing of the repeated crotaly, when sowing winter wheat for the second year with subsequent sowing of the repeated crotalaria with subsequent sowing of the intermediate crop shabdar + bersim, the yield was 49.0-48.3-49.4 c/ha compared to the long-term and control variants. Keywords: short-rotation crop rotation, intermediate crop, repeated crop, crotalaria juncea, shabdar (trifolium alexandrinum), bersim (trifolium resupinatum), winter wheat, long-term experience, sedirate crop, soil fertility, cotton, yield, additional crop, boll, cotton, fiber, rotation, repeats, research, combined sowing (+), sowing keta ketttk, agrotechnology, irrigation, fertilization, inter-row cultivation, weather, temperature, beneficial microorganisms in the soil.