. Diseases of economic plants. Plant diseases. 202 DISEASES OF ECONOMIC PLANTS It is reported upon many species of true beans (Phaseolus) and upon related genera a Visgna, Falcata, Strophostyles. If the disease proves destructive, clean culture, the de- struction of all wintering forms, is advisable. Blight (Pseudomonas phaseoli E. F. Smith).—Beans of various kinds are subject to a blight which manifests. Fig. 90. — Bacteriosis of bean leaves. After Fulton. itself upon the pod, leaf, or stem. It has been reported from various states, from Canada, is widely distributed, and often quite destruct
. Diseases of economic plants. Plant diseases. 202 DISEASES OF ECONOMIC PLANTS It is reported upon many species of true beans (Phaseolus) and upon related genera a Visgna, Falcata, Strophostyles. If the disease proves destructive, clean culture, the de- struction of all wintering forms, is advisable. Blight (Pseudomonas phaseoli E. F. Smith).—Beans of various kinds are subject to a blight which manifests. Fig. 90. — Bacteriosis of bean leaves. After Fulton. itself upon the pod, leaf, or stem. It has been reported from various states, from Canada, is widely distributed, and often quite destructive. It was first observed by Beach1 in New York. Usually the leaves are the parts first attacked. Here large watery patches, brown in colorr are produced. These spots later dry, become papery in texture, and rupture, leaving the foliage ragged and torn. After 1 Beach, S. A., (Geneva) Agr. Exp. Sta. Bui. 48, December, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870- joint author. New York, The Macmillan Company
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