THE INFLUENCE OF IRRIGATION REGIMES ON THE FORMATION OF ELEMENTS OF PRODUCTIVITY AND PRODUCTIVITY OF COTTON

Р.Ф. Саидзода, С.Т. Саидзода, Т.Т. Пирзода, А.Т. Садиков

Abstract


Optimization of soil water regiment during irrigation together with fertilizers drastically enhances the growth and physiological activity of the root system of plants. The resent article presents the results of studies of the rate of irrigation of medium-fiber cotton varieties Sorbon and Dusti-IZ» at a soil moisture content of 75-70-60% of FPV. The objects of the study were domestically selected medium-fiber cotton varieties with different periods of vegetation and productivity. The study was conducted in 2016-2018 in the dehkan farm «Boboy Ziedali», located in the village Rudaki in the Vakhsh district of Southern Tajikistan. The optimal irrigation rate and scheme for the local varieties are proposed to be 2-5-2 and 2-6-2. The yields of the varieties irrigated according to these regiments range from 46,5 to 48.6 c/ha and 45.6 to 48,0 c/ha, respectively.

Keywords


cotton, variety, soil, irrigation scheme, density, fruit elements, fiber yield, productivity.

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