Southern field crops (exclusive of forage plants) . Fig. 102. — The Corn Eah-worm at Wokk in the Tip of an Eabp OF Geeen Corn. 210 SOUTHERN FIELD CROPS 192. Corn ear-worm, or cotton boll worm {HcliotMsobsoleta). — This is the same insect as the cotton boll worm (see Par. 359). The eggsare laid bj^ a large grayishbrown moth, which, es-pecially towards evening,may be found hoveringover fields of corn, cotton,and cowpeas. The eggsarc placed on the silks(Fig. 101), leaves, orother parts of the cornplant. After these hatch,the joung \\orms, or lar-vse, find their way into thetip of the ear and dest
Southern field crops (exclusive of forage plants) . Fig. 102. — The Corn Eah-worm at Wokk in the Tip of an Eabp OF Geeen Corn. 210 SOUTHERN FIELD CROPS 192. Corn ear-worm, or cotton boll worm {HcliotMsobsoleta). — This is the same insect as the cotton boll worm (see Par. 359). The eggsare laid bj^ a large grayishbrown moth, which, es-pecially towards evening,may be found hoveringover fields of corn, cotton,and cowpeas. The eggsarc placed on the silks(Fig. 101), leaves, orother parts of the cornplant. After these hatch,the joung \\orms, or lar-vse, find their way into thetip of the ear and destrojthe tip grains. Their in-jury consists, not only inthe grains destroyed (), but in admittingrain to the ear and possi-bly in giving easier accessto weevils. The remedyusually recommended islilowing the land in thelate fall or winter. Theobject in this is to breakup the burrows under-ground in which this in- Fic. lf«.-THP, Con^ Ear-worm ^^^.^^ in the chrvsaHs, Or PREYIN(.J ON THE 1 ENDER L/EAVES _ _ OF Corn. pupal condition, spends. CORS IXSECTS 211 the winter (see Par. 360). This insect sometimes seriouslyinjures the bud or upper leaves of corn plants severalfeet high (Fig. 103j. 193. Chinch bugs (BUvsu-i leucopterus). Fortunatelythis pest, which is serious in the corn belt and sometimesin the seldom occurs in the southeastern partof the United States. When present, chinch bugs crawlin hordes from the wheat fields toward the growing corn field may be pro-tected Vjy surromrding it bya narrow strip of plowedland, kept constantly culti-vated, so as to form a deeplayer of dust; or by sur-rounding the corn field witha deep furrow, the bottomof which is kept dusty byfrequently dragging throughit a heavy log. At inter-vals in the bottom of thisfurrow deeper holes may bemade. When the small in-sects accumulate in theseholes, they are killed by theuse of kerosene. 194. Weevils Callandra
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