Insect pests of farm, garden and orchard . wing. It has seemed to the writer that traj) rows of sweet corn mightbe used for protecting tomatoes as they are used with cotton, butno experiments seem to have been conducted which show the prac-ticability of the method. As the Aoung caterpillars feed a little onthe foliage before boring into the fruit, a thorough spraying witharsenate of lead, 3 pounds to 50 gallons, will undoubtedly protectthe tomatoes if applied as soon as the eggs are laid, and with oneor two later applications at intervals of ten days, the exact timedej)ending upon the latitutl
Insect pests of farm, garden and orchard . wing. It has seemed to the writer that traj) rows of sweet corn mightbe used for protecting tomatoes as they are used with cotton, butno experiments seem to have been conducted which show the prac-ticability of the method. As the Aoung caterpillars feed a little onthe foliage before boring into the fruit, a thorough spraying witharsenate of lead, 3 pounds to 50 gallons, will undoubtedly protectthe tomatoes if applied as soon as the eggs are laid, and with oneor two later applications at intervals of ten days, the exact timedej)ending upon the latitutle and season, as indicated by the lifehistory (seepage 181). CHAPTER XVIINSECTS IXJITRIOUS TO BEAXS AND PEAS* The Pea-weevil f The common Peu-weovii occurs in ulmost all parts of the worldwhere peas are grown, and is the usual cause of buggy peas. Itwas the cause of the abandonment of pea growing in the centralAtlantic States as early as the middle of the eighteenth has usually been regarded as a native of North America, having. Fig. 221.—The pea-weevil {Briichus pisorum L.): a, adult beetle; h, larva;c, pupa—all enlarged. (From Chittenden, U. S. Dept. Agr.) been introduced into Europe. It does but comparatively littledamage in more northern latitudes and for this reason seedsmensecure their seed peas from Canada and northern Michigan andWisconsin. The weevil is about one-fifth inch long and about one-halfthat width, being the largest of the pea- and bean-feeding weevilsin this country, Its ground color is black, but it is thickly cov-ered with brown pubescence, variegated with black and white * See F. H. Chittenden, Insects Injurious to Beans and Peas, YearbookU. S. Dept. Agr. for 4898, p. 233. f Bniciius pisorum Linn. Family Bruchidw. 306 INSECT PESTS OF FARM, GARDEN AND ORCHARD
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