Diseases of Field CropsSection 2. Diseases of cereals and grasses; Soybean diseases; Section 4. Diseases of fiber and other field crops. |
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alfalfa areas ascospores avenae bacterial barley blotch caused cells cereals cereals and grasses Chap chlamydospores clover common conidia conidiophores corn crop residue crown culm damage dark brown distributed downy mildew Drechs Etiology flax floral bracts fungi fungus Fusarium germinate Gibberella globose graminicola Helminthosporium humid hyaline hybrids inoculum Jour leaf spot lesions loose smut mature microns microns in diameter morphology mosaic mycelium necrosis North America oats oöspores oryzae parasite perithecia physiologic races Phytopath plants powdery mildew Puccinia graminis pycnidia Pythium R-S R-S reaction reported Research resistant varieties rice root rot Sacc sclerotia Seed treatment seedling blight Septoria smut fungi soil sorghi sorghum sori soybean species spores sporidia stage stalk stem rust stripe sugar cane sugarcane susceptible sweetclover symptoms teliospores Tilletia tissues tobacco trifolii tritici U. S. Dept United uredia Ustilago virus wheat wilt winter yellow zeae Ꭱ Ꭱ