Show Blackleg J g of p Potato Poto t Can dan Be Controlled Formaldehyde or Corrosive Sublimate Favored Potato one one o of the most destructive of or tuber diseases cnn can be controlled hy by tl treating th the seed seed pece pieces hot formaldehyde h de or corrosive sublimate provided pro ci the seed seel ij pieces e s are planted Immediately t I or are Ule kept keit out o of reach each of or a n certain small fly lly until they are rc planted Th ThIs Thijs s fly l lays l s 's Its e eggs gs in great great- abundance abundance dance dunce about the time potatoes ar are being be be- jug ing plant planted d If it happens ns to to la lay U them em upon seed potatoes and st such ch seed Is planted planted- the eggS egg'S eggs hatch o out t what Is known Is-known known as the see seed corn corn n mag ag got got so so called because when first discovered dis I covered erell It was was' attacking corn seedlings seed seed- lings According to toJ J. J G G. G Leach ot the division lH oT or plant pathology Minnesota l C College of f Agriculture the eggs ggs cont contain ln the thie blackleg Organism r anis when they are depo deposited Jhon Then as ns th the maggot gg 1 bores s l tle e se S se tl 1 pi Piece ce It Jt carries s with it the which first rot rol the seed had and then the spread spread to to the step stem of the plant causing it also to rot an and ind dieThe die The maggots mug feed upon the the the-bac- bac term as as well ell us liS the lie de decaying tuber sn says s 's Doctor Leach The remain re main In the I intestinal tract of the maggot mag- mag gOt until until it t pupates and makes its Va way yay to the tile surface of the where ground liere it ft develops de into the adult adulf fly Thi Thus s the Insect t carries t tile ie bl blackleg bl with ith it at t all times times' l |