Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . the beetle tofly, it is not likely to pass from one plantation toanother to deposit eggs, and the isolation of newplantations from old ones is consequently to be de-sired. If the plants for the new field must be takenfrom an infested patch, they should be dug up asearly as possible to guard against transporting eggsor larvae with them. It is probable that sprayingthe fields with the arsenites late in summer will leadto the poisoning of many of the beetles, and thatburning the fi
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . the beetle tofly, it is not likely to pass from one plantation toanother to deposit eggs, and the isolation of newplantations from old ones is consequently to be de-sired. If the plants for the new field must be takenfrom an infested patch, they should be dug up asearly as possible to guard against transporting eggsor larvae with them. It is probable that sprayingthe fields with the arsenites late in summer will leadto the poisoning of many of the beetles, and thatburning the fields, after picking, will prove benefi-cial. In case infested patches are to be plowedunder, this should be done late in June or early inJuly, to destroy the half-grown larvae then present,in the crowns. INJURING THE LEAVES. The Strawberry Leaf-roller. Phoxopteris is a small, brownish caterpillar that folds theleaflets of the strawberry by bringing the upper 90 INSECTS AFFECTING THE STRAWBERRY. surfaces together and fastening them by silken cords(Fig. 37), and feeds upon their substance till they. Fig. 37. Strawberry leaf folded by Leaf-roller. look brown and scorched. It is sometimes exceed-ingly destructive, and has been considered by someentomologists the most injurious of the insect enemies>of the strawberry. It probably occurs in nearly all-the Northern states; and, is also found in Europe,where, however, it is does not prove hatches from eggs laid in spring upon the straw-berry plants by a small, reddish-brown moth, whichis accurately represented slightly magnified at , c. The larva attains its full growth in June,
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Keywords: ., bookcentury1800, bookdecade1890, bookidi, booksubjectinsecticides
