. Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada. Agriculture -- Canada; Agriculture -- United States; Farm produce -- Canada; Farm produce -- United States. Fig. 361. Mexican cottonboU- weevil. Enlarged. Fig. 362. Larva of Mexican cotton- boll-weevil. More enlarged. ever, is to kill them by thorough winter cultiva- tion, and keeping down all vegetation in the early spring. The cotton-worm (Aletia argillacea), bollworm {Heliothis armiger) and Mexican cottonboll-weevil {Anthonomus grandis) are not so easily controlled, and their rava
. Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada. Agriculture -- Canada; Agriculture -- United States; Farm produce -- Canada; Farm produce -- United States. Fig. 361. Mexican cottonboU- weevil. Enlarged. Fig. 362. Larva of Mexican cotton- boll-weevil. More enlarged. ever, is to kill them by thorough winter cultiva- tion, and keeping down all vegetation in the early spring. The cotton-worm (Aletia argillacea), bollworm {Heliothis armiger) and Mexican cottonboll-weevil {Anthonomus grandis) are not so easily controlled, and their ravages have been costly. The cotton- worm is now more easily controlled than formerly. It is a blue-green caterpillar, with black spots and stripes on its back. It is most severe in late sum- mer, but is the entire summer. There are several generations each year. The common method of combating it is to apply dry Paris green to the plants. The cottonboll-worm is a common garden pest, attacking various crops, as corn, tomatoes, peas and squash. The caterpillar is somewhat darker than the cotton-worm, but otherwise the two are very similar in their early stages. This, too, has several generations in a season. It is most effec- tively controlled by the planting of an early trap- crop. Sweet corn is much used. As soon as the corn is infested it is removed and destroyed or fed to stock. Lantern traps for the moths and ansenical sprays for the worms have given limited success. The most serious problem confronting the cot- ton-grower today is the control of the Mexican cottonboll-weevil, which is threatening the de- struction of the industry. The weevil is small, three-eighths inch, or , in length, of a dark brown or black color. The eggs are laid in the young bolls, and the larvae begin their work by eating the inside of the bolls. No very effective direct method of combating the weevil has been found. Its control depends on strict attention to many details in the culture o
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