Effectiveness of successful application of herbicides ‘Chemical Glyphosate’ and ‘Himstop’ 330 against annual and perennial weeds in cotton fields of Uzbekistan

Abstract

This article provides information on the effectiveness of successive application of herbicides chemical glyphosate (CG) (3 l/ha) and Himstop 330 (1.5 l/ha) against annual and perennial weeds in cotton fields. When Himstop 330 was used at a rate of 1.5 l/ha, the number of annual weeds was reduced by 84.6-90.4%. 14.5-17.9%. When CG 54% herbicide was applied at a rate of 3.0 l/ha, annuals were reduced by 16.5–19.4%, while perennials were reduced by 86.4–91.5%.CG, when applied in the fall at a rate of 3.0 l/ha, and Himstop 330, at a rate of 1.5 l/ha (in series) with the sowing of annual weeds 89.6-94.5%, perennials 88.2- Provides a loss of 92.6%.When CG was used separately at a rate of 3.0 l/ha and Himstop 330 at a rate of 1.5 l/ha, 3.25 q/ha more cotton was obtained than the control variant. CG (3.0 l/ha) and Himstop 330 (1.5 l/ha) herbicides when applied in series provide a high cotton yield of 5.2 q/ha per hectare.

Efficiency of agrotechnical and chemical measures in control of weeds in onion (Allium cepa L.) fields

“…Productivity indicators were statistically analyzed by the method of dispersion analysis according to B.A. Dospekhov [5]. In the experimental field, the density of the soil in the 4th repetition in the 0-50 cm layer was measured by the cylinder method according to Kachinsky, and the porosity of the soil was calculated by the method; water permeability of the soil was determined in the 10th iteration according to the Kachinsky method [9].…”

“…As the weed density increases to 100, these nutrient absorption figures escalate to 6.3-7.2 kilograms for phosphorus and 2.7-3.6 kilograms for potassium. Additionally, the absorption of nitrogen reaches 9.5-10.3 kilograms per hectare under these conditions [5][6][7]. The repercussions of such nutrient competition with weeds are reflected in the diminished yields of various cultivated crops.…”