Effects of New Stimulators and Use of Suspension on the Dry Mass Collection and Leaf Area Formation of Cotton

Abstract

Sodium Humate, Obereg and Fitovak stimulants were found to have a specific effect on the process of dry biomass accumulation of cotton According to the experimental options, the dry mass of the plant root is 0.5-0.8 g, the stem was 2.5-2.7 g, the leaves were 3.6-3.9 g and the budding was 0.5-0.7 g, the total dry weight was 7.1-7.9 g, and it was found that the amount of dry mass increased in the variants using the new stimulants compared to the control variant.

The increase in dry mass was even more pronounced after cotton was treated with new stimulants during the budding period. This process continued during the flowering and fruiting periods of cotton, when the dry mass of the root was 3.5 g in the control variant, 3.4 g in Dalbron, 3.9 g in Sodium Humate, 3.9-4.7 in Obereg 1.0 ml / t. g, Obereg was 3.7-4.8 g in the 1.5 ml / t norm, Fitovak was 3.9-4.4 g, and root mass was found to be 0.2-1.2 g heavier under the influence of stimulants. This means that stimulants have a positive effect on the formation of the root system.

Sodium humate, Obereg, and Fitovak stimulants also had a positive effect on leaf formation and leaf area during the developmental stages of cotton. At the same time, the number of leaves in a bush increased by 2.2-8.2, leaf weight by 6.5-29.2 g, single leaf weight by 0.06-0.33 g, and its area was 166.8-373.7 cm² more, which had a positive effect on the acceleration of the photosynthesis process.

In the experiment of cotton of Navruz variety, when sodium stimulants, Oberegh and Fitovak stimulants were used at the right time and in the right norms, the process of photosynthesis was accelerated during the development of cotton and the net productivity of photosynthesis was 0.61-3.39 g / m² per day.

Determining the norms of feeding with a suspension prepared on the basis of urea fertilizer based on the norms of mineral fertilizers used in the care of cotton resulted in harmonized physiological processes and a positive effect on the dry mass accumulation of cotton as a result of favorable conditions for plant growth and development.

In the conditions of typical sierozem soils of Tashkent region, the determination of feeding cotton with a suspension made from urea fertilizer on the basis of mineral fertilizers is based on the acceleration of photosynthesis during the development of cotton and photosynthesis net productivity was 0.55-2.19 g / m² per day compared to water treatment more, and allowed the cultivation of a high and quality cotton crop.