OCR Text |
Show CABBAGE BEETLE POES MUCH Ht.1? Insect Carefully Avoids Arsenical Sprays Effective Against Many Other Pests. BEST METHODS FOR CONTROL Tobacco Dust Found to Be Most Effective Ef-fective of Repellents Tested Arsenate Ar-senate of Lead Applications Found Satisfactory. "Prepared by the United States Department Depart-ment of Agriculture.) Evidently the Western cubbngo flea Dcctle wns not hatched to dlo by poison at least by sprays of nrseulcnls tound so effective against many crop jiscct pests. It mny be driven away, However, by poisonous applications, md herein lies the methods of control discovered by specialists of the bureau f entomology, United Stntes Depart-ncnt Depart-ncnt of Agriculture, whoso experiments experi-ments In combating tho pest arc de-jcribcd de-jcribcd in Department Bulletin 002, 'The Western Cabbage Flea Beetle," recently published. Tills Insect Is by 10 means confined to cabbage, but fro-liicntly fro-liicntly does serious Injury to turnips, adlshes, mustard, kale and other cole :rops, to sugar beets, tnblo beets nnd jndcr exceptional conditions to beans ind peas. Dainty In Habits. The beetles, It Is snld, are dainty In heir feeding habits, carefully avoiding Collage that hns been sprayed, and nt-tacklng nt-tacklng either unsprnyed parts or flying fly-ing to other plants. Repellents such is tobacco dust were found to bo the most effcctlvo of thoso tested, nnd of ,ho nrseulcnls, heavy applications of arsenate of lead gave tho most satisfactory satis-factory results. A formula that gave excellent remits re-mits wns arsenate of lend paste, 1 pound; flsh-oll soap, as n sticker, 1 pound ; nnd wnter, 10 gallons, nnlf of this weight of powdered lead arsenate, jr 2V4 pounds In CO gallons of wnter, ts equally effective, with a corresponding correspond-ing quantity of soap, to act ns nn nd-hcslvc, nd-hcslvc, or "sticker." It should bo np-pllcd np-pllcd with n sprayer fitted with elbow extension, nnd speclnl effort should be mado to coat thoroughly the under surface of the leaves. Two or three implications at five to eight-day Intervals Inter-vals nre sufficient, even In case of severe se-vere Infestation, provided the first np-plication np-plication Is made promptly on the first appearance of the Insect. Control by Nicotine. The pest can nlso be controlled by nlcotlno sulphnte, one-bnlf pint, 40 per cent solution, In 50 gallons of water, wa-ter, with 2 pounds of sonp added, which Is n deterrent. It Is not possible, pos-sible, however, to control this Insect entirely when It occurs In Its greatest great-est abundance. In addition, It Is desirable to keep the plants thrifty and well watered.. Mcchnnlcnl and crop traps can he used with ndvantnge. Clean culture Is always al-ways advisable. |