Economic entomology for the farmer Economic entomology for the farmer and fruit-grower economicentomolo01smit Year: 1906 The fall army-worm.—6, its head ; c, d^ its body segments enlarged. Laphygma friigiperda and its variations. avoid injury, and a frequent rotation will prevent them from be- coming numerous enough to be destructive at any time. The arsenites can be employed, of course, for the protection of crops that admit of being sprayed. Wheat-fields badly infested in fall are not necessarily ruined or even much injured, because wheat will stand cutting down almost to the ground during
Economic entomology for the farmer Economic entomology for the farmer and fruit-grower economicentomolo01smit Year: 1906 The fall army-worm.—6, its head ; c, d^ its body segments enlarged. Laphygma friigiperda and its variations. avoid injury, and a frequent rotation will prevent them from be- coming numerous enough to be destructive at any time. The arsenites can be employed, of course, for the protection of crops that admit of being sprayed. Wheat-fields badly infested in fall are not necessarily ruined or even much injured, because wheat will stand cutting down almost to the ground during the latter part of the season, and will yet come up vigorous and in good condition the spring following. The moth that produces this caterpillar is a modest, gray creature, expanding hardly more than an inch, and the hind wings are pure white and semi-trans- parent. It is a variable species, and ranges from an almost uni- form gray to forms in which there is a considerable admixture of bluish white, the ordinary lines and spots of the owlet-moths being also well marked.
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