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DISEASES CAUSAL ORGANISM Seedling blight Phytophthora parasitica Rust Melampsora ricini Leaf blight Alternaria ricini Brown leaf spot Cercospora ricinicola Bacterial leaf blight Xanthomonas campestris pv. ricini 1. SEDLING BLIGHT – Phytophthora parasitica Symptoms The disease appears as circular, dull green patch on both the surface of the cotyledonary leaves. Later it spreads and cause rotting. […]
Diseases of oats DISEASES CAUSAL ORGANISM Septoria avenae blotch Phaeosphaeria avenaria f.sp. avenaria Stem and leaf rust Puccinia graminis var. avena Leaf spot Drechslera campanulata Bacterial blight Pseudomonas syringae pv.striafaciens Yellow dwarf Barley yellow dwarf virus 1. Septoria avenae blotch — Phaeosphaeria avenaria f.sp. avenaria Symptoms The fungus infects leaves, sheaths and stem and […]