Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . it will drive them away. In seasons when the beetlesare not too thick, dusting the plants with dry, un-leashed wood ashes, or lime or plaster, will also keepthem off, and tobacco decoction is a good remedy. Cabbage Cut-worms. The cabbage is subject to attack by nearly a dozenspecies of cut-worms, nearly all of which, however,are similar in habits and history, and may wellbe treated of collectively. They are all larva? ofmedium-sized, night-flying moths, and are ratherthick, nake
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . it will drive them away. In seasons when the beetlesare not too thick, dusting the plants with dry, un-leashed wood ashes, or lime or plaster, will also keepthem off, and tobacco decoction is a good remedy. Cabbage Cut-worms. The cabbage is subject to attack by nearly a dozenspecies of cut-worms, nearly all of which, however,are similar in habits and history, and may wellbe treated of collectively. They are all larva? ofmedium-sized, night-flying moths, and are ratherthick, naked worms of the general form of Fig. 105, curl up whendisturbed. The eggsare deposited gener-ally on the branchesof trees and shrubs,the larva? descend-ing to the ground insearch of food assoon as of them, feedupon grass or cloverwhen young, becom-ing, about half grown by winter time, when theyseek the shelter of some log or stone, or burrow intothe soil. Here they hibernate, and in spring comeforth in search of food. They now attack a varietyof young plants, biting off the .stems and feeding. Fig. 105. <& _.: .cr* Variegated Cut-worm: a, larva;6, 198 INSECTS AFFECTING THE CABBAGE. upon the leaves. Cabbages, tomatoes, turnips,squashes, melons, and various other garden vegeta-bles are all liable to their They becomefull grown in spring or early summer, when theypupate beneath the soil surface, and three or fourweeks later emerge as moths. The larva (a) andmoth (b) of the Variegated Cut-worm (Agrotis saucia)are represented, natural size, at Fig. 105. Somespecies have two or more broods each season, whileothers have but one. Cut-worms are especially likely to do damage infields and gardens close to grass-lands, and to cropsimmediately following grass. Remedies.—Of the dozens of methods of destroy-ing cut-worms, there are three which are of specialmerit. They are: (1). The poison method. This consists in killingoff the worms before the crops
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