Influence of agrotechnological factors on cotton yield

In the field experiment, three different thicknesses of cotton bushes (80; 100 and 120 thousandper hectare, as well as 7.2; 9.0 and 10.8 plants per 1 pogonometer, respectively), two differentirrigations relative to the limited field moisture capacity of the soil (ChDNS) regime (70-70-60 and75-75-60%, as well as the irrigation regime 2-3-0 and 2-4-0, respectively) and the ratio of the twonorms of fertilizer (NPK) (1: 0.7: 0, 5 and 1: 1: 0.5) were studied. The annual norm of fertilizerswas: N200 P140 and K100 and N200 R200 and K100 kg.It was taken into account that the yield of cotton grown under conditions where the irrigationregime was 70-70-60% relative to the soil ChDNS (limited field moisture capacity) was higher inthe years of experiments than the yield in the 75-75-60% regime irrigated variants In the 70-70-60% irrigation regime, the average yield was 35.7-40.9 s/ha, depending on thethickness of the bush and the ratio of fertilizers, while in the 75-75-60% irrigation regime the yieldwas 33.2-36.4 on average. s/ ha.The micronair index of fiber in cotton harvested from experimental variants was 4.3-4.5, andthe micronair index of cotton fiber harvested from 70-70-60% of irrigated variants was slightlyhigher than the 75-75-60% irrigation regime