. Horticulture; a text book for high schools and normals. Gardening; Vegetable gardening; Fruit-culture. 304 PRINCIPLES OF SPRAYING bacteria attacks. The chief spray materials used to prevent dis- ease are Bordeaux mixture, lime-sulfur, ammoniacal carbonate of copper, and livers of sulfur. The first two mentioned are more permanent and are not easily washed off by rains when once dry on the plants. The other two materials are used in cases where it is necessary to wash the fruit or other product before being eaten by people. They may be used to spray fruits that are nearly mature. Another fung
. Horticulture; a text book for high schools and normals. Gardening; Vegetable gardening; Fruit-culture. 304 PRINCIPLES OF SPRAYING bacteria attacks. The chief spray materials used to prevent dis- ease are Bordeaux mixture, lime-sulfur, ammoniacal carbonate of copper, and livers of sulfur. The first two mentioned are more permanent and are not easily washed off by rains when once dry on the plants. The other two materials are used in cases where it is necessary to wash the fruit or other product before being eaten by people. They may be used to spray fruits that are nearly mature. Another fungicide is copper sulfate used on the dormant form of â tmt. Fig. 212.âSpraying improves quality and increases yield. Sprayed tree at left bore four barrels of apples, 87 per cent marketable. Unsprayed tree at right bore one barrel, only 13 per cent marketable. Note also the difference in leaves. (Missouri Station.) the plants. Lime-sulfur is also used to control scale insects chiefly during the dormant season of the plants. Each of these will be discussed in this chapter. Bordeaux mixture is made of three materials: copper sulfate, fresh lime and water. The standard formula is 4 pounds of copper sulfate, 4 pounds of lime, in 40 gallons of water. This is briefly expressed as 4-4-40. The 3-3-40 formula is sometimes used where plants are tender, as on young tomato plants. Dissolve the copper sulfate in hot water or hang the crystals in a. 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 Davis, Kary Cadmus, 1867-. Philadelphia, London, J. B. Lippincott Co
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