. School and home gardening; a text book for young people, with plans, suggestions and helps for teachers, club leaders and organizers. Gardening; School gardens. SCHOOL AND HOME GARDENING gallons of water. The extra lime is omitted if Bordeaux is used in place of water. When Paris green is used dry, one pound of it may be mixed with twenty pounds of powdered lime. This is used on plants when the leaves are moist with dew. 4. Making Bordeaux Mixture.—Slake a pound of lump lime, as described in another exercise. Add enough water to make five gallons. Dissolve a pound of c o p p er sulfate (blue
. School and home gardening; a text book for young people, with plans, suggestions and helps for teachers, club leaders and organizers. Gardening; School gardens. SCHOOL AND HOME GARDENING gallons of water. The extra lime is omitted if Bordeaux is used in place of water. When Paris green is used dry, one pound of it may be mixed with twenty pounds of powdered lime. This is used on plants when the leaves are moist with dew. 4. Making Bordeaux Mixture.—Slake a pound of lump lime, as described in another exercise. Add enough water to make five gallons. Dissolve a pound of c o p p er sulfate (blue stone). This can be done by pouring hot water over it and stirring continuously for a few minutes. When hot water is' not available the sulfate may be suspended in water by" means of a cloth. This should be done the day before, as several hours are required. Add water to this solution to make up five gal- lons. When the Bordeaux mixture is wanted these two solutions should be poured together into a third vessel. The two should be poured at the same time; letting the stream of one meet the stream of the other in the air as they descend into the. Fia. 149.—The grain smut disease re- duces the yield as shown on oats at the left. (Agriculture and Life.) third vessel. Two persons can do this mixing better than one. The resulting mixture is of an intense blue color, but lighter in shade than the sulfate crystals. Bordeaux mixture is named from a town in France where the first experiments were tried with it. It should never be mixed until required for spraying, as it will not keep. The lime and sulfate may be dissolved separately and kept in stock solutions. It is a fungicide and not an insecticide when uSed alone. As a fungicide it should be applied as a spray before the disease starts on the plants. The above mixture would. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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