. Diseases of economic plants. Plant diseases. SMALL FRUITS 163 To prevent the inroads of the black rot thorough, clean culture should be practiced. All mummified fruit should be burned to avoid infection. Keep sprouts and all other growths off the ground. Allow no weeds or grass. Plow early so as to cover all remaining leaves and berries that bear the hibernating fungus. Cover crops are beneficial. Use a cleansing spray while the vines are still dormant to clean the bark, trellis, etc. The utility of this first spraying may vary with climatic conditions and latitude. Use protective sprays of
. Diseases of economic plants. Plant diseases. SMALL FRUITS 163 To prevent the inroads of the black rot thorough, clean culture should be practiced. All mummified fruit should be burned to avoid infection. Keep sprouts and all other growths off the ground. Allow no weeds or grass. Plow early so as to cover all remaining leaves and berries that bear the hibernating fungus. Cover crops are beneficial. Use a cleansing spray while the vines are still dormant to clean the bark, trellis, etc. The utility of this first spraying may vary with climatic conditions and latitude. Use protective sprays of 4-3-50 Bor- deaux mixture* throughout the summer. Five or six applica- tions are usually necessary. The first should be made when the shoots are 20-30 cm. long. The others at intervals of ten to four- teen days. After the first two sprayings the spray must reach the clusters to be effective. Spray each season. Neglect one season brings large increase in the rot the following season. The following table shows the benefits of careful, thorough Fig. 70. — Grape black rot. Original. 1 Shear, C. L„ Miles, G. F., and Hawkins, L. A., Dept. Agr. Bur. Plant Indus. Bui. 155. 2 Wilson, C. S., and Reddick, D., (Cornell) Agr. Exp". Sta. Bui. 266, p. 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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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
