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Show I fSffiWr FaVOretl 0Ver r Control of Stale's Alfalfa Pests ihoxychlor now bemg ' M deferred position over given a omrnended insecti-DDTf insecti-DDTf nrotect Utah alfalfa ;! cide o P Oughts of wee-; wee-; eldSKaT.s bug nymphs and ' crop destroyers. This ! (her in suggested insecticides ; change " it extensive tests ; K competed at the Utah : uituSrExperiment station, ' t0gan to0t5 were described by , Thcelvde Biddulph, of the Lo- Dr- Nation, at a recent session ' an. Irance hearings being con-of con-of tolerance y g p00(j and administration. He said Drug showed conclusively that fed Tay from DDT-treated C?(alfa fields ' accumulated a alfi,,n of the toxic material ! bullvda"f0us tissues and. also seated se-ated the material in their ""feeding tests with hay from ,,hV where Methoxychlor had fieln used to control insects also conducted. They "Sed no trace of this insecti-1 insecti-1 in "issues, blood, internal I nran or milk of the animals X four months consumption S the treated hay. As a result, methoxychlo.r has been designated desig-nated as a safe material to use on alfalfa grown for dairy cattle cat-tle feeding, eliminating harmful substances from milk, Dr. Biddulph Bid-dulph declared. Groups of dairy cows in the Utah experiments were fed hay from fields on which treatments had been applied containing one, two and three pounds of methoxychlor meth-oxychlor per acre respectively. Hay from each field was analyzed an-alyzed to determine the methoxychlor meth-oxychlor residue present. Hay from the field treated at one pound methoxychlor per acre showed 7 parts per million (ppm) of the insecticide; from the field treated with two pounds per acre, 9Vz ppm; from the field treated with three pounds per acre, 14 ppm. The cows in the test group were fed this methoxychlor-treated methoxychlor-treated hay for a four-month test, with no methoxychlor being be-ing found in the blood, kidney, liver, muscle or fatty tissues of the animals. Dr. Biddulph also pointed out that methoxychlor has given excellent ex-cellent control of the insects at-tacking at-tacking Utah alfalfa fields. |
