. Injurious insects : how to recognize and control them . Insect pests; Insect pests. 174 FESTS OF GABliEX AXJj FIELD CROPS small dark dots. There is a rather dark stripe down each side of the body. Frequently this species is abundant without developing the instinct of marchins in â ' ; It feeds on ah'alfa. sugar beets, and many other field and garden crops. Winter Ls passed as pupa in the ground. There are two broods in the North; four in the South. Control depends on the nature and extent of the crop attacked. In limited areas apply arsenicals. In large fielfls .the worms may be
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. 174 FESTS OF GABliEX AXJj FIELD CROPS small dark dots. There is a rather dark stripe down each side of the body. Frequently this species is abundant without developing the instinct of marchins in â ' ; It feeds on ah'alfa. sugar beets, and many other field and garden crops. Winter Ls passed as pupa in the ground. There are two broods in the North; four in the South. Control depends on the nature and extent of the crop attacked. In limited areas apply arsenicals. In large fielfls .the worms may be killed by crushing them with a hea'i'y roller. Fall plowing and disking, combined with cultivation where feasible, will kiU manv of the overwintering Fig. 199. â Ad'ilt of the Fall .\riny Worm. Original. The Beet Army Worm (Laphygma exigiia Hbn.) In some of the Western states this species has periods of disastrous abundance on sugar beets. Its invasions occur at the same time as those of the fall army worm. The larA"a resembles the latter, but lacks the distinct black dots. On each side there is a dark stripe, along the lower edge of which is a series of white dots. The winter is passed as an adult moth. There are two broods in the summer, and apparently the normal food plants are certain weeds. Clean culttire is indicated, in order to keep down the weeds on which the species may live in spring or fall. The worms may be poisoned by applying Paris green or arsenate of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
