This scientific article provides data on the effectiveness of successive application of herbicides against annual and perennial weeds in cotton fields on arable lands plowed with simple and two-sided plows. When the herbicide Samurai (1.5 l/ha) is applied separately, the annual weeds are effectively lost (86.8-90.2%), and have a weak effect on perennials. When Zellek Super (1.0 l/ha) herbicide is used separately, it has a weak effect on annuals (24.0-32.0%), effectively reducing weeds. Both perennial weeds (90.5-93.0%) and perennial weeds are effective when applied in series with Samurai (1.5 l/ha) and Zellek Super (1.0 l/ha) herbicides 88.9 -93.3% loss. Cotton yield will increase by 1.8-5.4 q/ha compared to the control option. Consecutive application of Samurai (1.5 l/ha) and Samurai (1.5 l/ha) and Zellek Super (1.0 l/ha) herbicides against annual and perennial weeds is recommended.

Today, in order to develop cotton production in Uzbekistan, all attention is paid to the use of modern, promising ways of farming, in particular, to free up cotton fields for other crops and to increase the gross yield by planting cotton varieties with high fiber yield and high quality in relatively small areas, in each province and farm in the region where cotton is grown. - breeding of varieties suited to climatic conditions is being focused on. The cultivation of high and quality cotton depends primarily on the yield potential of cotton varieties and the compliance of cotton fibers with standard requirements. Therefore, creating new cotton varieties and placing the most promising ones in accordance with the different soil and climatic conditions of Uzbekistan remains an urgent task of scientists and specialists. Care of different cotton varieties, taking into account the fact that their requirements for nutrients, water, soil and climatic conditions and other agrotechnical factors are different depending on their biological characteristics, it is considered very necessary to develop specific recommendations and put them into practice.

This article deals with the timing of sowing, germination, growth, development, obtaining high and quality grain crops, irrigation timing, irrigation procedures, development of irrigation standards and effective care agrotechnology in the conditions of light soils of grassland-gray mechanical composition of Jizzakh province in Uzbekistan and data on the conducted scientific researches are given.