Show AM AIM TO PREVENT PLANT DISEASES uch could be saved to future crops if care Is taken to avoid infected plants CROP ROTATION IS HELPFUL setting of few td plants plant may live start that will ruin gar gan den for yar are ar easily eally transmitted by the tha united states department of agriculture Arl Acri culture what ft a lot might have been saved if we could have hae applied to crop production 20 years ago what we know now about the control of plant d diseases a and equally true hue what a lot we vo could save in future cropsie crop crops sIf lf 0 we o would only apply tile the knowledge that ivo HB have future crops Is written advised ly for the introduction of n disease into now new soil boll way may effect for years to come the crops planted on oil lint soil unless radical and extensive olea measures are ace taken to the alie fAl sease frimi tile tho soil say of the united states Depard neut of agriculture infests soil for M many any years take lor for the cn cai of c ot 0 tile lie cruci crucifer fei s 1 e cabbage mill flower mustard etc dc tle the setting of nf a i few clubfooted club rooted plants inny give ele tho the start hint tit in it a single season benson w ill ahnke for years tin fin otherwise goo good d garden tor for anti and other cru crucifers cifers A case Is kno knon in which a cabbage blage vu patch lit in i yi was as abandoned 27 years lenra ngo ago be cause of nf the prevalence of when cabbage was again planted tile tho crop clop vas badly affected affe cled the disease WN N PK ap 4 1 u t A 1 A X 1 0 O 71 W 1 I I 1 V 0 e on young cabbage plant biad been kept alive timing during all elioe years ears by wild mustard tind and other cruel fers that had grown upon the land no as weeds w cods Is w not manifested in the top lit in early stages of development but buoy always le be icen seen on oil the roots it it Is present at the time the plants tire anre taken from froin the sued seed bed an ab abdor 11 or inal swelling spelling in shy part of tile tho root Is an indication of 0 the presence of tills this disease lit in its later intel stages lie he swelling ing may involve the entire root us as shown lu in the illustration and will mill invariably baue the production of a poor head an another other example Is that of 0 root knot ot of a wide ot of Plit plinth lits ho 0 injurious in the southern ern part of if the country tin occurring ig some of tile lie more moie northern states it would collid bo be I 1 impossible to state how much ro roly knot there was in the south BO years yearn lim 5 41 1 jc j C r V acl X 94 M A I 1 root knot knat on it young aurig tomato plant nant ago hut but it Is certain that the disease its becoming more wide gorvad every year this distribution Is duo due tar largely aga e ly n ito by p I 1 a it a amm ago a carload of pota 1 14 chipped ali from one itata to another in er to bo be wed used for seed eel too late it was wan discovered that the potato wore were infested with root knot ing ine eelworms eel worms which weri vm of cour court str scattered far aud nd wide by this rt rrie leans ont while lethis elrio anay aut liflie two the first drat introduction of tha dismaya into that state it was nn n n ut at least lait one of many inmany introductions which hute have resulted in the wider whirr and wider spread of root knot and the lie loss of t millions willjo us ot of dollars only clean plants plant tomatoes Tomo toes tobacco celery peppers figs peaches pea clif and many other plants ure tire lik likewise ewfim instrumental in carr Tinz this disease As AB by the name its principal Is on I 1 the i e roots of plants in the form of ewel langa or knots severe infestation will result in the yellowing and and often the ha death of the plan wilts constitute another group 0 s alint ratty lie P to evv 4 g t f X Z N I 1 al g 4 1 4 1 0 k 1 1 el 4 fv A 4 W 11 1 I 1 1 1 1 f t vl I 1 2 11 I 1 1 11 U I 1 in advanced static new soil by menus of 0 diseased desent ed plants they tire manifested by n wilting of th the whole hobe plant these anti the ones referred to above be and ought to botempt out of new land the way iny 0 to o do it Is to set out only clean plants the any ny to keep the plants clean 1 lit to ster sterline lIze the hie seed beds it if pre sauie Is available the inverted pan method described lit in banners Fan ners bulletin Is bosti best such steam pressure may cany often be hall had in the greenhouse front the boiler used for li heating catIng for outside seed beds any kind of a ste pleam holler boller cither on a stationary outfit or a steam traction engine will auml ii plenty of pressure pleasure if steam pres sure Is not good results can bo be accomplished by the hot water ater treat ments advocated lit in department departie rit bulle tin |