Show Cube dui Root Fatal to Cattle Grubs Entomologists Successful in Its Use to Control Grub Pest Prepared by tho the tho United States Department of Agriculture Whoever would think of ot trying tr to solve sol a n problem In entomology by hy applying ap up plying ln cube root As a matter of fact that Is exactly what federal entomologists entomologists did try try and and with gratifying success The cube root however has hus no relation to the mathematical process process proc proc- ess familiar to high school students Even en the tine pronunciation Is different and cube Is divided di Into two s syl- syl l und coo coo bay and the root Is the rc at of n a South American plant which Is now considered u a highly promising source of Insect poisons The Tue poisonous poi pol principle In the cube plant Is rotenone the thc same poison polson that Is Ismore Ismore Ismore more familiar In derris powder Best Control Methods In tr trying to discover the best methods meth for controlling the grub that Infests In in- tests cattle arid and causes knobby bunches to form forini In their backs federal entomologists ento ento- experimented with several They sprinkled these powders pow puw- dens ders on tine the backs s of Infested cattle and rind observed the effect on the grubs Other poisons used included powdered derris root hydrated h lime hare nicotine sulphate and tobacco powder po alt of which were reasonably effective In ridding ridding rid rid- ding ln the tine cattle of ut the tine grubs The in h by lime wins was too caustic for the skin of the tine cattle The derris dermis and cube root powders had laid no unfavorable I effect on the skin and hair of the tine an an- u. u h mauls and these materials are art not nOl particularly particularly par par- poisonous and ond hence are ver very safe to use Applications of these powders pow ders at l day 10 intervals killed most of the tine grubs Two to four tr treatments were required Control Heavy Losses The federal scientists have been anxious to discover some same method of controlling the h heavy annual lossos from cattle grubs which will be less lessI I tedious and md disagreeable than the tine customary cus dus tomary y method of or squeezing the tine grubs until they pop out of the tire lack back of or the infested animal The Tine dusting methods give gl a high degree degre of ot control and would be he particularly effective If It the whole community could be Induced todo to todo todo do the dusting simultaneously for two or three seasons |