Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . mostlocalities it only occasionally becomes injurious. Remedies.—The most promising method of pre-venting the injuries of this insect appears to be thatof inducing the flies to deposit their eggs in youngwheat, and then destroying it. Where a third brooddevelops in volunteer wheat this end may be accom-plished by turning under this volunteer growth 222 INSECTS AFFECTING WHEAT. when the Hessian Fly larvae are about half-grown;or in case no such brood develops in the volunteerwhea
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . mostlocalities it only occasionally becomes injurious. Remedies.—The most promising method of pre-venting the injuries of this insect appears to be thatof inducing the flies to deposit their eggs in youngwheat, and then destroying it. Where a third brooddevelops in volunteer wheat this end may be accom-plished by turning under this volunteer growth 222 INSECTS AFFECTING WHEAT. when the Hessian Fly larvae are about half-grown;or in case no such brood develops in the volunteerwheat, a few strips in the field may be seeded towheat a few weeks before the regular planting time,and the flies will lay their eggs in these, which areafterwards to be plowed under. Thus the main cropof wheat will escape infestation. The Chinch Bug. Blissus leucopterus. The Chinch Bug and the Rocky Mountain Locusthave long been known as the arch enemies of West-ern agriculture. They have each destroyed millionsof dollars worth of property, and have often causedgreat destitution over large areas. The Chinch Bug. Chinch Bug: a, b, eggs; c, e, /, young ; g, nymph orpupa; h, adult. Magnified. flourishes best at the South, but occasionally occursin destructive numbers as far north as New Yorkand Minnesota. Like other injurious insects it is INJURING THE STALK AND LEAF. 223 subject to periodical uprisings, which usually con-tinue one, two, or three seasons before the variousnatural checks upon its increase reduce its num-bers below the danger line. The adult Chinch Bug (Fig. 118, h) is a smallblackish insect, slightly less than one-fifth of an inchlong, with the legs dark yellow, and their tips young (c, e,f) do not differ in general form fromthe adults. When first hatched they are pale yel-low, but they soon become red: this continues to bethe prevailing color until the pupa or last nymphstage (g) is reached. The insect is then grayish orbrownish-black. The eggs (a, b) are
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