Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom00stev Year: 1910 262 DISEASES OF ECONOMIC PLANTS This disease was first described by Rolfs from Florida and has since been found in many Southern States upon a wide range of plants. The application of a clear, preventive fungicide, such as ammoniacal copper carbonate, to the ground at the base of the plant, and where any part touches the ground, so that it can soak into the ground near by and cover the stem itself, has. proved beneficial. The first application should be made at the earliest sign of the blight, o
Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom00stev Year: 1910 262 DISEASES OF ECONOMIC PLANTS This disease was first described by Rolfs from Florida and has since been found in many Southern States upon a wide range of plants. The application of a clear, preventive fungicide, such as ammoniacal copper carbonate, to the ground at the base of the plant, and where any part touches the ground, so that it can soak into the ground near by and cover the stem itself, has. proved beneficial. The first application should be made at the earliest sign of the blight, or still better, in anticipa- tion of it, and should be followed by other applications at in- tervals of two to three weeks. Bor- deaux mixture is not suitable, since the effective part of it is filtered out by the soil. Anthracnose (Glceosporium piper alum Ell. & Ev.).— Soft, circular, pale, sunken spots upon the fruit accom- panied by small, ruptured spots in the skin, through which the pink spore masses protrude, indicate this disease. 1 Rolfs, p. H., Fla. Agr. Exp. Sta. Rpt., 1893. Fig. 118. — Pepper plant showing fungus, Sclero- tium Rolfsii Sacc. After Fulton.
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