. Annual report of the North Carolina Agricultural Experiment Station . Figure 5. Adult Southern Corn Bill Bug feeding on corn, normal position. with a sharp punch, while the holes eaten out by the corn stalk-borerare usually decidedly more ragged. The holes eaten by the corn ear-worm are usually not round, but elongate and decidedly more irregular,on the average, than the holes made by the corn stalk-borer. The^holes The Bulletin 15 eaten by the adults of the southern corn root-worm have a tendencyto be square instead of being round. Not infrequently these beetles eatthe tender leaves just ab
. Annual report of the North Carolina Agricultural Experiment Station . Figure 5. Adult Southern Corn Bill Bug feeding on corn, normal position. with a sharp punch, while the holes eaten out by the corn stalk-borerare usually decidedly more ragged. The holes eaten by the corn ear-worm are usually not round, but elongate and decidedly more irregular,on the average, than the holes made by the corn stalk-borer. The^holes The Bulletin 15 eaten by the adults of the southern corn root-worm have a tendencyto be square instead of being round. Not infrequently these beetles eatthe tender leaves just above the seed leaf until the unfolding leavesare completely cut off. In this respect their work resembles the workof certain cut-worms, species not determined, which have the habit of HK. Figure 6. Adult female Southern Corn Bill Bug ovipositing in corn, normal position. crawling up the stalk and cutting off the unfolding leaves. In all thefields examined, however, the work of the adult root-worms was muchmore common than the work of the cut-worms. In general, farmers do not distinguish clearly between the work ofthe adult corn bill bugs on young corn and the work of the southerncorn root-worm. The work of the corn root-worm is most conspicuous2 16 The Bulletin about tlie time the corn is sprouting. At this time the .seed leaf isvigorous and green and the unfolding leaves (bud) are withered anddead in those stalks that have been attacked by the root-worm. (Fig. 9.)On the other hand, in stalks attacked by the corn bill bugs all the leavesremain fresh and green at this time and later the whole plant dies if itis severely attacked. These young stalks usually show the character-istic rows of holes acoss the leaves. (Fig. 10.)
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Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
