SPRAYING WEEDS.

Dominion, Volume 6, Issue 1561, 3 October 1912, Page 10

SPRAYING WEEDS.

EECII'E i:OJI,.THE. BEST SPRAYS,

h'onio'TKulers would no doubt like to have u rtciye.rfoi; .dostroyiiij; .-wee.ds en paths, drives etc. The Ohio Experiment Station, U.S.A., has made u special study of this ..question,, rind..'the best sprays discovered ..-;«. far are as follow:—Common salt (31b.;.t0.l gallon of.wutcr), iron sulphate (_\l to to the Dillon), calcium chloride, (same .streiijttli, as.salt), sodium arsenitc (l'.ib. in 50 gallons), and coppar sulphatc.(S to ,lUlb. to 50 Rallons). Tlie-e solutions, are ii.-eil tit from ; II) to, 75 gallons per acre. The chemicals are all comparatively cheap. Suit has proved Die best spray-for Cauada.-'tliiStlts.'iibison ivy, yarrow, and horse-nettles.; , /' [ran sulphate kills mustard weed, •rajjivce'd.' white-lop, yarrow, and., btlier , weeds. The Station botanist points out that thwe-chemicals kill plants of the "-b'l'da"(l-leAyed class (thistles,; (lnii(lolioii-,-;carro.t;.vnettl€s;-;otc;),-. but do no injury to r.arrow-leaved plants (such as. that crops like clover, lucerne, vetches, or rape will be ■l;iUc/lV.lJy.".'thK'X-lieniicals; and also timt wfwl Rrassiis, blaelc oats, and other .-.narrow-leavad.. weeds: will escape. The.whole thins is slill in the e.t-perimpnt-.stago-as,'yet. ■■'• ■