Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 Small Fruits 133 Moisture and heat favor the development of the fungus, while moisture upon the leaves is essential to infection. Weather favorable to infection followed by hot, dry days may be attended by great injury. Heavy, wet, undrained soil also conduces to disease. Fig. 69. — Strawberry leaf-spot. After Freeman. Frequent change of beds; also cutting, gathering, and burning or burying of tops in place after harvest, and the use of Bordeaux mixture after the removal of the diseased leaves
Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 Small Fruits 133 Moisture and heat favor the development of the fungus, while moisture upon the leaves is essential to infection. Weather favorable to infection followed by hot, dry days may be attended by great injury. Heavy, wet, undrained soil also conduces to disease. Fig. 69. — Strawberry leaf-spot. After Freeman. Frequent change of beds; also cutting, gathering, and burning or burying of tops in place after harvest, and the use of Bordeaux mixture after the removal of the diseased leaves will lessen the infection of the next year. Hume in Florida found that by means of three early spray- ings of 4-4-40 Bordeaux mixture, the disease was so checked that ''it was a difficult matter to find a leaf at all diseased in the whole patch.' Later, when the disease began to make headway again, another spraying controlled it.
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