Test Results on the Biological Effectiveness of the Herbicide Kataryus Bereke against Annual and Perennial Weeds in Rice Fields in the Conditions of Tashkent Region

Abstract According to the results of the study conducted in this article, the application of the herbicide Kataryus bereke at a rate of 0.5 l/ha against annual weeds in rice crops led to the destruction of weeds, the biological efficiency was 94.9% compared to annual cereal weeds. In the experiment, when using the herbicide Kataryus bereke at a rate of 0.5 l/ha, the yield of rice grain was 11.4 centners higher than the control in the Tashkent region. Taking into account the biological efficiency of the herbicide Kataryus bereke , it is recommended to use 0.5 l/ha against annual cereal weeds in rice crops. It is recommended to carry out tillage work when weeds have developed 3-4 leaves in wet soil.