The Prescott daily news., 1916-03-18
1. CONTROL SWEET 20. ? 'Vs TATO ROTs IN FIELD
 AND STOREHOuSE

,, .L;roton. D. C., MdICi Ao' NaS af disease in the field and Tn n'iv, i.a.scp bins will enable sweet po- '~ .n,ors to extend the marketing " and to dispose of a greater Ssv % of their crop at the higher 'i''0r uhicb prevail in the winter. At
 ''' ,onv growers, especially the sS0s '.'sr ones. sell their entire crop at '' sa time when prices are low, s.. ss. .hose who store their potatoes s'i ss heavily from the various storage T r.,mars' Bulletin No. TIA, a new ,r,ot;on of the U. S. Department
 Asriculture, offers suggestions for
 ;0,nrovemept of this situation by .,,,,;rc the stock from diseaac, ,h in the field and in the storage bin. vs field diseases-stem rot, black foot rot, scurf, and root rot described and directions for their rtrol given They are caused by mo; which invade the plants and sr roots, and infect not only the ,Dts but the soil itself, and may
 carried to new areas and plants by spcts farm animals, infected imple- ,nts, drainage water, wind, or dis spd roots or tubers. The fungi are so often spread in manure used as lrhlizer
 Seed Selection.
 The means of securing healthy |cus, therefore, must be the exclu- on of the germs from the fields and cm the seed and fertilizer used in e growing of the potatoes. The e.hods used in the prevention of ee diseases include the treatment
 the seed, the hotbed, and the field. The seed potatoes must be care tIy selected the year before at dig ing time from hills which are known
 contain healthy plants. This may
 determined by splitting the stem
 the plants and examining the in- FrOr for indications of rot. The seed ostoeS themselves should be ex- mlned again before planting for evil enceS of disease. Where slip seed E is used, equal care must be taken bat the cuttings are made from dis hse-iree plants.
 Dsinfection of Seed and Hotbed.
 The seed potatoes should be disin- eted just before bedding by immers- g them for five or ten minutes in a button made by dissovling one |fce of corrosive sublimate in eight allons of water. This destroys any pores which may adhere to the eeds Following this treatment the 'atoes should be rinsed in warm wa and dried in the sun.
 lhs hotbed is often the source of Election. Thorough disinfection ev- Y year should be practiced. The lanegork and the ground around it paa De thoroughly oaked with a so- s'loa Of iormaldehyde of copper sul- lae' Where formaldehyde is used. 'noald be used in the proportion of pnt II formaHn to thirty gallons water With copper sulphate. one .u u"u should be used with twenty-five '4viS or water The operation .''u De repeated after twenty-four 'uis' The soil for the hotbed. pre- .aOy sand, must be taken from al u' p'ace where potatoes have never % grown; If possible, from some ',. sn p'ace in the woods, removing the rN SA inches of soil and using only .. saoSoil' Care should be taken to ua' Infection is not carried on [.', wagons, implements. and tools ' s'a a. Where stable manure is nsed k,. ~s :, no'oed, it should be from ami |sa., ,a that have not had access ,S't, to 1i. de (stos. t,a or :, diseased potatoes. Such po- bu,bl, " Ted at all, should be thor 'Tsl' Ts1 C cooked first. ''' |4i, iAs dlsinfection of seeds and hot keDs aSs s prove ineffective if precau- tn tba e not taken against infection |s s,.. s neld' Sweet potatoes sbould |sbiss grown in new ground. or gro"nd sr,Ou,d kese,., 'aS not produced tubers for blisssd s', years, This can be accom- s,ss ssa0n' Most of the 'r,'~vle sweat tr1p DO not affect other crops.
 hn, 10 Lessen Storage Rot.
 .rsst ms as sin important as the growing ba,, " potatoes is tho nro.Ie., 's