The Effect Of Passing Crops Oncotton Dry Mass Accumulation Anditsyield,And The Norms Of Mineral Fertilizers Used For It

Abstract

High indicators of dry mass accumulation of cottonin 1:1 of short-turn
crop rotation, autumn wheat + mixed siderate crops (perko, oats, blue peas):the dry mass
of the leaves of the "Navruz" variety of the cotton is 22.6 g., dry mass of stem 33,4 g., dry
mass of cotton bolls18,5 g., dry mass of cotton is 48,0 g. the total dry mass of 1 plant was
122,5 g. equally. This, in turn, 9,4 g of the total dry mass at the end of the period of
validity compared to the control option grown on the background of which no repeated
crop was plowed after the autumn wheat, ensured that it was high.
After the autumn wheat, the seeds of soybeans and mung beans grown as a
repeated crop were treated with nitragin before planting, and against the background of
which the norm of mineral fertilizers to N30 ?90?60 kg/ha was applied, the dry mass of the
leaves of the cotton in the options for care next year was 22,5-23,1 g., dry mass of stem
32,4-32,9 g., dry mass of cotton bolls, 20,5-21,1 g. and the dry mass of cotton is 48,7-49,3
g. the total dry mass of 1 plant 125,1-126,4 g. was equally. In the options where the norm
of mineral fertilizers to N30 ?90?60 kg/ha was applied on unprocessed background with
nitragin before planting the seeds of soybeans and mung beans, next year the dry mass of
cotton leaves was 21,0-21,8 g., dry mass of stem 31,8-32,4 g., dry mass of cotton bolls
18,9-19,5 g. the dry mass of cotton is 45,9-47,1 g., the total dry mass of 1 plant is 118,7-
120,9 g. asit was determined.
High indicators on cotton crop 1:1 of short-turn crop rotation,
autumnwheat+repeated crop mungbean: in the cotton system, afterautumn wheat, as a
repeated crop, mung bean was observed in the planted options next year against the
background of repeated crop rotation, cotton crop was obtained from "Navruz" varieties to
38, 4ts/ha, and from "Omad" varieties to 37,2 ts/ha. This allowed to obtain an additional
cotton crop in the amount of 3,7-5,8 ts/ha compared to the control option.
The processing of seeds of soybean and mung beans grown as a repeated crop
after the autumn wheat with nitragin before planting had a positive effect on the yield of
the cotton, and provided that cotton yields would be 0.9–3.3 ts / ha higher than next year’s
cotton-grown options on non-nitragin-treated backgrounds before sowing soybean and
mung bean crops.