. Southern field crops (exclusive of forage plants). Agriculture. COTTON INSECTS 395 363. Stages in the life of the boll-weevil. — In the life of the cotton boll-weevil, as in that of most other insects, there are four stages. These are, (1) the egg; (2) the lar- val, or grub stage, which is the growing period; (3) the. Fig. 173. — Punctured Cotton Squaeb. Showing egg puncture of boll-weevil and "flaring" of bracts. pupal, or changing stage, in which this insect is compara- tively inactive and in which no food is taken; and (4) the adult or mature stage, which, with the boll-weevil,
. Southern field crops (exclusive of forage plants). Agriculture. COTTON INSECTS 395 363. Stages in the life of the boll-weevil. — In the life of the cotton boll-weevil, as in that of most other insects, there are four stages. These are, (1) the egg; (2) the lar- val, or grub stage, which is the growing period; (3) the. Fig. 173. — Punctured Cotton Squaeb. Showing egg puncture of boll-weevil and "flaring" of bracts. pupal, or changing stage, in which this insect is compara- tively inactive and in which no food is taken; and (4) the adult or mature stage, which, with the boll-weevil, is the period of activity and of egg-laying. 364. How the injury is done. — Injury to the forms,. 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 Duggar, J. F. (John Frederick), 1868-. New York, The Macmillan company
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Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
