. 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; Horticulture; Horticulture; Horticulture. parts are not built for such feeding, and as it is imprac- ticable to poison tht lu ( ' t t}it jtltnt one is forced to fight such Insecfi witli i 1. i Ih ^ i- oi . i, h Insect must bea(tuill\ / t hiiIi s hil lu-. ,i ,.\ li,. ; and of the syrph
. 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; Horticulture; Horticulture; Horticulture. parts are not built for such feeding, and as it is imprac- ticable to poison tht lu ( ' t t}it jtltnt one is forced to fight such Insecfi witli i 1. i Ih ^ i- oi . i, h Insect must bea(tuill\ / t hiiIi s hil lu-. ,i ,.\ li,. ; and of the syrphus flies, plant-Uc-e o£ all kmds would soon get beyond control. While man must recognize these little friends as valuable aids in his warfare against the hordes of Insect pests, it will rarely be safe to wait for the pests to be controlled by their enemies. Fig. 1156 shows a tomato worm bearing the co- coons of a parasite. Fig. 1151 shows one of the predaceous beetles destroying a cutworm. Injurious Insects. — There are now about a thousand dif- ferent kinds of Insects that may be classed as injurious in the United States and Canada. Over 600 kinds were exhibited at the Columbian Expo- sition in 1893. All of these may not be injurious every year, as most Insect pests have periods of stibsidence, when certain factors, possibly their enemies or perhaps climate conditions, hold them in check. The outlook for American horticulturists, so far as injurious Insects are concerned, is not encouraging. Nowhere else in the world are Insects being fought as intelligently, success- fully and scientifically as in America, yet we never have exterminated, and it is very doubtful if we ever will, a single Insect pest. This means that American horticul- turists will never have any fewer kinds of Insects to fight. On the contrary, there are many more Insect pests now than in our grandfather's early days, and new pests are appearing every year. This alarming state of affairs is largely due to t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjec, booksubjectgardening