Abstract Background Powdery mildew was found in most of the sunflower fields in Egypt. causing severe yellowing of the blade. petiole. stem and calyx. https://www.detectorexpertes.shop/product-category/shafts-and-rods/
Biological control of Golovinomyces cichoracearum, the causal pathogen of sunflower powdery mildew
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