Scientific analysis of the morphological state of cotton varieties in the experiment before defoliation

Abstract

The experiments were carried out on S-8290 and S-6775 cotton varieties in the conditions of the grassland soils of the Fergana region. In this case, in the background of 50-60% opening of cotton variety S-8290, the average height of the plant is 92.7 cm, the number of leaves on the stem is 33.3, the number of buds is 12.7, of which 55.5% are opened and half-opened ones are 1,6%. In cotton variety S-6775, the average height of the plant before defoliation was 96.3 cm, the number of leaves on the bush was 36.0, and the number of bolls was 12.5, of which 33 were opened. It was found that 9% and half-opened ones made 2.5%. In the second background (50-60%) of this variety, the average height of the plant is 96.8 cm, the number of leaves on the bush is 36.8 pieces, the number of buds is 12.3 pieces, of which 53.6% are open and 1.9% are semi-open was noted in the observations.