Shukhrat Abdualimov’s scientific contributions

Since silicon (Si) was found to be effective in crop production recently, more information is needed about its characteristics, including how it functions as a nano fertilizer for crop performance. Therefore, this study aimed to evaluate the impact of the Si-containing nano fertilizer on cotton growth parameters and productivity in the arid region. The research conducted in open field conditions over the two consecutive growing seasons (2021 and 2022) revealed that the application of the Si-containing product significantly increased the biomass (10.6%), economic (19.4%), seed (14.3%), and lint yields (18.2%) of cotton as compared to the control group values. Likewise, the cotton biomass, economic, seed, and lint yields were increased by 11.8, 9.7, 9.5, and 9.1%, respectively, compared to the control variables after the Uzbiogumin application. Agronomic nitrogen-use efficiency (aNUE), physiological nitrogen-use efficiency (pNUE), internal nitrogen-use efficiency (iNUE), and apparent nitrogen recovery efficiency (aNRE) parameters were increased by 2.4-fold, 2.1-fold, 34.6 and 57.3%, respectively, with the application of Si nanonutrition. Although the cotton treated with nano Si produced a greater yield, while Uzbiogumin application resulted in more cotton biomass. Based on the results it can be concluded that the applied nano Si product can be widely used to increase crop productivity, especially in degraded lands under arid environments.

In the article, the scientific basis of the new stimulators on enzyme activity, biosynthesis of amino acids and proteins, and the physiological processes that occur during cotton development, the effect of new stimulators on seed and cotton during its growth period, on seed germination, cotton growth and development, and resistance to gommosis and wilt diseases, were determined. . Biodux stimulator provides 8.512.1% higher field fertility of seed, and the highest result was achieved at the rate of 3.0 ml/t. Also, when cotton was treated with Biodux at the rate of 2.0 ml/ha during the flowering period, the plant height was 7.7 cm higher, the yield branches were 1.3 pieces and the number of bolls was 1.8 more, and the degree of opening of bolls was 7.7-13.7 % has been found to be accelerated.