IikJ'kiiki J'hiiil Diseases. 207 



ronls li('c;nnc \ciy l.ir.uc :iiiil nddil ion.i I u'lilN were l'(inii('(| <iii the new 

 s<'C(iii(l:u"\' I'diils sent mil ;ili(i\c llic nriui ii;i 1 in I'cst a I ion. Wlicllicr or not 

 lii(- soil of Indian.'i lirlds will remain licrniancnt iy infested with nenialoilcs 

 is not known and tests are now iiiid(>r way to detcMMnine this jioinl. In viow 

 of tile iMMsisience of I lie nematode infestation in nnu-iv soils near (Joslien 

 and Akron, and llie (oxjien infestalii n is of at least six years standing.-^ 

 it woidd appeal- In lie a (pie<tionali!e practice to flood Indiana each si)ring 

 with nematode infested plants. Kurt lieiniore. II. I). I'.iown foiunl nematode 

 i^alls on tomato seedlin.ys in a cold frame at Ila rdinslmr-, a fact which 

 would indicate that these nematodes already may he indigenous in certain 

 Iccalities in southern Indiana. 



TIKXII'. 



An niKpiestionahle mosaic disease of turniiis was found near South F.end. 

 Oct. \-2. associated with a I'ather hea\.\ infestation of tarnished plant hnj;s. 

 'I'lie diseased plants w(>re stunted and the leaxcs showed chai-acteristic 

 mosaic etiolation, nmttlin^ and dark .i;reen imllx' areas. 



'i'urniiis and cahha.ue .iirowin.ir in the nematode infested muck soil near 

 (hishen were not alfected with root-kuot. 



WATKU.MKLOX. 



Fnsariiim wilt seemed to he irenerally present in fields previously used for 

 watermelons. In one Meld near Princeton not in watei'melon.s in six years 

 ahout 2 per cent of the phmts were killed hy wilt. This indicated that the 

 fun^rus persisted at least six yi'ars in th(> soil. In an 80-acre field on new 

 soil near Vincennes no wilt was found. 



Leaf-spot or hlijiht caused hy Mt( rii(iri<i J)i-(tsxic(tc iiif/rcxcciis was found 

 prevalent in one field near Decker Auj^ust 1!>. 



The foot-rot widely announced as "take-jiU" in l!tl!> was foinid only in an 

 experimental tield near Wanatah where the disease occurred in IHliV The 

 other infested tields were not rei)lanted with wheat ■ this year, however. 

 This disease seems to he rather closely associated with the varieties Red 

 Cross and Salter's Prizetaker. 



Scah caused hy GihhrrcJhi sdiiliiiictiii. which was very ahundant in 1019. 

 was not at all common this year. I'iiial reports that it was sei-ions locally 

 in Davis and Posey counties. 



Sti'ni rust was not at all ahundant on winter wheat except locally. Hos- 

 mer re]iorts that some stem rust was noted in practically all localities where 

 harherries wer<' found and one rather extensive infestation occui-re(l in Knox 

 c(mnt.\'. Dn si)rin.ti wheat stem rust was more common. Leaf rust was 

 common on sprin.iz; wheat hut was pi'cseiil to only a slight decree on winter 

 wheat. In licnei-al this was not an epidendc year for eithei- stem or leaf 

 rust. 



Runt or stinkin;r smut is in ueneial lieconnn.i: less |u-e\alent in Indiana 

 hecause of the wide use of the formahlehyde seed treatment. It was worse 



