Effects of mineral fertilizer applications and suspension in cotton on cotton yield and field technological quality indicators

The article provides information on the effect of leaf feeding on cotton yield and technological quality indicators of fiber by means of a suspension prepared on the basis of urea during the period of mating and flowering of 2-3 chin leaves, depending on different feeding norms. Against the background of application of mineral fertilizers N-200, P2O5-140, K2O -100 kg / ha in cotton, the highest cotton yield is 7.0 kg / ha in the period of 2-3 leaves, 9.0 kg / ha in the period of weeding and at the beginning of the flowering period. The urea-based suspension at a rate of 11.0 kg / ha was obtained from the leaf-fed variant and amounted to 37.5 centner / ha. Against the background of application of mineral fertilizers N-250, P2O5-175, K2O -125 kg / ha, the highest yield of cotton is 5.0 kg / ha in the period of 2-3 leaves, 7.0 kg / ha in the period of weeding and at the beginning of the flowering period. The urea-based suspension at a rate of 9.0 kg / ha was obtained from the leaf-fed variant and amounted to 38.9 centner / ha. The use of urea-based suspension in cotton against the background of different standards of mineral fertilizers has a different effect on the technological quality of cotton fiber, fiber yield by 0.2-0.6%, weight of 1000 seeds 0.4-2.9 g. e, and the fiber length was 0.3–0.8 mm higher.

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