. Practical agriculture [microform]. Agriculture; Agriculture. INSECTS OF THE FIELD. 8t When full-grown they enter the pupa state in the ground and emerge full-grown beetles. There may be several broods in a season. By having the ground in good condition before the seed is sown the young plants grow rapidly and soon get the start of the beetles. The weevils also belong to the same order as the beetles, and are most injurious to grain crops. The pea-weevil may be taken. Its eggs are laid on the outside of the young pod. The larva hatches and eats its way through the pod and into one of the peas
. Practical agriculture [microform]. Agriculture; Agriculture. INSECTS OF THE FIELD. 8t When full-grown they enter the pupa state in the ground and emerge full-grown beetles. There may be several broods in a season. By having the ground in good condition before the seed is sown the young plants grow rapidly and soon get the start of the beetles. The weevils also belong to the same order as the beetles, and are most injurious to grain crops. The pea-weevil may be taken. Its eggs are laid on the outside of the young pod. The larva hatches and eats its way through the pod and into one of the peas, where it lives upon the substance of the pea. The change to the pupa takes place in the pea. Sometimes these beetles come out in the fall, but in most cases they stay inside the peas until spring. They do great damage to the peas by destroying the germ. All grain weevils may be killed by placing in the bins some poisonous substance that will readily evaporate, such as carbon bisulphide. The bins are shut tight and the beetles are killed by the fumes. If the peas are kept over until two years old the beetles will mature and die in the bins the first year, and the seed then sown the second year will be entirely free from the pest. These beetles do not lay their eggs, or oviposit, on dry peas. Any seeds of which the germs have been eaten by the grubs will, of course, not sprout. Fig. 35.—Pea-weevil or " pea bupr," life size. A, the mature beetle, enlarged; H, tlie larva or grub, enlarged ; larva life 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 James, C. C. (Charles Canniff), 1863-1916. New York : D. Appleton
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Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectagriculture
