. 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. 1162. A spreading board for drying soft-winged insects. space ; for nursery stock use the same amounts for each 100 cubic feet of space ; in greenhouses the gas is used about one-half as strong, or even less for some kinds of plants. Nursery stock, trees and plants in greenhouses are usually subjected to the ga
. 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. 1162. A spreading board for drying soft-winged insects. space ; for nursery stock use the same amounts for each 100 cubic feet of space ; in greenhouses the gas is used about one-half as strong, or even less for some kinds of plants. Nursery stock, trees and plants in greenhouses are usually subjected to the gas for from 30 to 60 minutes ; mills are usually kept closed 12 to 24 hours. As potassium cyanide and hydrocyanic acid gas are among the most deadly poisons, fumigation should be under the direct supervision of competent persons. Insects are preserved in collections by securing them in tight cases by means of a pin inserted through the thorax, or through the right wing if the subject is a beetle. Moths and butterflies are pinned in position on a spreading-board until thoroughly dried. See Figs. 1159-1163. Every horticulturist should make a collec- tion of injurious Insects. Insect Literature for if07â ^ici^?^^(r^sfs. âHorticultur- ists should keep in close touch with the experiment sta- tions and state entomologists of their own and of other states, and also with the Department of Agriculture at Washington; for it is from these sources that the best and latest advice regarding injurious Insects is now be- ing disseminated free, either by personal correspon- dence or by means of bulletins. Among the books, one or more of which may well find a place in a horticul- turist's library are the following : Weed's "Insects and Insecticides," Sempers' "Injurious Insects and the Use of Insecticides," Lodeman's "The Spraying of Plants," Saunders' "Fruit Insects," and Smith's "Economic ; jj. y. Slingeelaud. Inula {ancient name).
Size: 2329px × 1073px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthor, bookcentury1900, bookdecade1900, booksubjectgardening
