. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. THE INSECT WORLD. 213 change of location for the strawberry beds. The insects are rarely troublesome in the Eastern, but often injurious in the Central States. Old beds should be ploughed out and destroyed as soon as they have been picked, and when new beds are set out care should be used in selecting plants free from insect attack. Where a two-year picking rotation is used and the old plants are immediately destroyed, the species are not able to increase
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. THE INSECT WORLD. 213 change of location for the strawberry beds. The insects are rarely troublesome in the Eastern, but often injurious in the Central States. Old beds should be ploughed out and destroyed as soon as they have been picked, and when new beds are set out care should be used in selecting plants free from insect attack. Where a two-year picking rotation is used and the old plants are immediately destroyed, the species are not able to increase ex- cessively. The arsenites may be satisfactorily used to kill th-: Fig. Grape-root-worm, Fidia viticida.—A, adult; B, pupa ; C, larva ; the other letters refer to details of larval structure. adults when they are noticed feeding upon the foliage. Using commercial fertilizers instead of barn-yard manure is also to be recommended. Perhaps the best-known species of this family is the " potato- bug," or "potato-beetle," or " lo-lined beetle," or "Colorado potato-beetle," Doryphora lo-lineata. No description of this insect is necessary, the figures serving to illustrate all its stages sufficiently well. The insects winter underground as adults or pupae, and the beetles emerge early in spring, attacking the young plants as soon as they show above ground, and laying- eggs for the livid-reddish larvae. About midsummer these have matured a second brood of beetles, and a second brood of larvae. 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 Smith, John Bernhard, 1858-1912. Philadelphia and London : J. B. Lippincott co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906
