Influence of agrotechnological factors on cotton yield
Keywords:
Fertilization ratio, watering regime, bush thickness, fertility, the qualityAbstract
In the field experiment, three different thicknesses of cotton bushes (80; 100 and 120 thousand
per hectare, as well as 7.2; 9.0 and 10.8 plants per 1 pogonometer, respectively), two different
irrigations relative to the limited field moisture capacity of the soil (ChDNS) regime (70-70-60 and
75-75-60%, as well as the irrigation regime 2-3-0 and 2-4-0, respectively) and the ratio of the two
norms of fertilizer (NPK) (1: 0.7: 0, 5 and 1: 1: 0.5) were studied. The annual norm of fertilizers
was: 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 irrigation
regime was 70-70-60% relative to the soil ChDNS (limited field moisture capacity) was higher in
the 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 the
thickness of the bush and the ratio of fertilizers, while in the 75-75-60% irrigation regime the yield
was 33.2-36.4 on average. s/ ha.
The micronair index of fiber in cotton harvested from experimental variants was 4.3-4.5, and
the micronair index of cotton fiber harvested from 70-70-60% of irrigated variants was slightly
higher than the 75-75-60% irrigation regime
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