. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 1708 SPRAYING SPRAYING 2371. Splint broom for applying spray. An early de- vice. LeBarron, state entomologist of Illinois; William Saun- ders, London, Ontario, Can.; J. S. Woodward, Lock- port, N. Y.; T. G. Yeomans & Sons, Walworth, N. Y.; Professor A. J. Cook, Agricultural College, Mich. Following Paris gr
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 1708 SPRAYING SPRAYING 2371. Splint broom for applying spray. An early de- vice. LeBarron, state entomologist of Illinois; William Saun- ders, London, Ontario, Can.; J. S. Woodward, Lock- port, N. Y.; T. G. Yeomans & Sons, Walworth, N. Y.; Professor A. J. Cook, Agricultural College, Mich. Following Paris green came London purple, and then white arsenic. Since that time many different forms of arsenical poisons have been compounded, offered to the public and frequently used. London purple has now been largely dropped by fruit-growers, owing to its variable quality. White arsenic, used in combination with soda and "with lime, forms at the pi-esent time reliable and widely used insecticides. While sucking insects were instrumental in bringing about the invention of many formula?, it has only been within the last twenty-five years that au effective method has been devised for their treatment. Al- though kerosene has been recommended and used to some extent for thirty-five or more years, it was not until Cook recom- mended kerosene in the form of a soap and water emulsion that a desirable, eas- ily prepared oily insecticide was found. About the same time, Dr. Riley, with Mr. Hubbard, of the Department of Agricul- ture at Washington, recommended the use of what is now known as the Riley-Hub- bard formula. The potato bug invasion and the dis- covery of the efficacy of Paris green in de- stroying leaf-eating insects did a great deal to stimulate spraying, but due credit should be given plant pathologists for tracing the life-histories of many fungi destructive to cultivated plants. JFungicides. — 'Ea,r\y in the eighties dis- eases of grape-vines threatened the ex- tinction of Fren
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