AGRONOMIC MANAGEMENT OF UPLAND COTTON VARIETY BUKHARA-102 IN SURKHAN-SHERABAD VALLEY, SOUTHERN ZONE OF UZBEKISTAN

This paper analyzes the agronomic management of cotton variety “Bukhara-102” (Gossypium hirsutum L) in Surkhan-Sherabad valley, southern zone of the Republic of Uzbekistan. The Surkhan-Sherabad valley, a highly productive area within the Amudarya River Basin was selected to examine the proposed procedure. Not only facing the risk of soil salinization which adversely affect plant growth and development, but also the competition for limited water resources with domestic, industrial, hydropower and environmental uses, agriculture has to adapt to produce more products with less water. In field experiment irrigation scheduling, rates and ratio of fertilizers (NPK), plant density were studied on the productivity of cotton plant in slightly saline soil. According to research results, recommended agronomic management of this variety are as follows: plant density from 90 to 100 thousand plants ha-1 , mineral fertilizer application (NPK) 220:132:88 kg ha-1 , irrigation scheduling 70-75-65 % Fc which resulted in achieving highest yield average in 3 years 3.97 t ha-1 of seed-lint yield of cotton and water productivity equaled to 1027 m3 t -1 .