White rot diseases of sunflower and measures against them

This article presents the results of our experiments in the farm “Shonli Dior Fayz” in the Buka district of Tashkent region, the results of studies on the occurrence, spread of white rot disease in sunflower, symptoms of the fungus pathogen, the harm of the disease and the biological effectiveness of the applied fungicides.

Due to the fact that none of the fungicides allowed for testing in the Republic of Uzbekistan was recommended for use against sunflower white rot disease, the recommended norms for other crops for diseases with white rot were tested.

Based on the biology of pathogens, fungicides were used as control measures: Fundazol 50% sp. - 2.0 kg / ha. and Difen super 55% sp - 0.25 kg / ha. and their biological efficiencies are determined