Diseases of truck crops Diseases of truck crops / Ralph E. Smith diseasesoftruckc119smit Year: 1940 Diseases of Truck Crops 63 true rust, and breaks out in small, red, spore pustules on the leaves and stems (fig. 30). It also attacks broad bean, but is not important. Septoria Leaf Spot, Leaf Blotch.—The affected leaves become spotted with indefinite, yellow to brown blotches and are blighted much as in ascochyta blight. Pods and seeds may become infected with this fungus

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