145 



so(inc>iif Inck of niiiforiiiity in the size of the Imlhs. In ;iil(litioii tlicrc \v;is 

 ill tiic licid a distiiH-t l)l('Mcliiiijj: and Imi-niiii,' of llic leaf lips. 'I'liis ti'ouhlc 

 could iiol iu" attributed to auy parasilic attack aud was (|uitc likely 

 duo to au excess of soliilile salts in the sui-face soil, accordiii-,' to S. 1 ». 

 Conner. The latter' has found that there is an accuniulat iou of sohilile 

 salts in the surface la.xcrs of muck soils, composed luruely of nitrates, and 

 in comparatixc anal.xses of soil from areas where onions were iioi ^crowinu' 

 well and from the rest of the Held, he has fouml the <-ou<-ent ra t ion i>\' 

 nitrates thi-ee times as .ureal in the surface inch of the disease<l areas. In 

 such concentrations there is a toxic elfect upon the plaid. 



June ITth.. there was observed iu one field iu Dekalb ("ount.v a peculiar 

 type of injury eliiu-aetorized by a bleached area aud constriction of the 

 leaf just above the jiround line. The leaves usually bi'oke o\ci- at this 

 lesion. This trouble is likewise due i)robably to injury result ini: from a 

 teuiiKirary concentration of soluble salts iu tlu' surface soil. 



Loealiz(>(l neuuitode infections were found in one Held in Fulton Connt.w 

 Instead of root .stalls tlu> etTect was a clump of secondary roots at the i.oint 

 of infestation. 



I'.VUS.MP. 



Leaf-spot du(> to <'<Ti'osp<,ni iipii was found rather abuudaid in the fall 

 near Lafayette. 



Pi;.\. 



The bacterial spot and the bli.iiht caused by Ascoclnitfi pisi were fiuuid 

 in small gardens. 



Canners report serious trouble in their crops. It is (luite likely that this 

 will prove to be a soil difficulty due to a Fusariuni. Hoffer reports that 

 specimens received iu previous years showed root infestation by Fusarium 

 siK'cies. 



Peach. 



Early in the season lliere was a jiarticularly widesiucad aud destructive 

 <']iideniic of iK'ach leaf curl caused by E./ddsciix (Icfonmnis. '{'he <lisease 

 was' noted iu nine counties. A vei-y hitib percenta.ije of the foliaue on 

 diseased trees was infected. 



Later in the season (he leaf-spot and shotliole caused by linrh riiiin iinnil 

 became the most serious disease. It occurreil in (Jreene and Hancock 

 counties and was found in abundance iu Knox couidy where defoliation was 

 clearly attrilmtable to this disease. In the last case, the attack on the 

 fruit was not at all severe, however. 



Cankers and twig blight due to t^clcrotinia cUicrea wore noted early in 

 the season in Tippecanoe and Orange counties. This disease seems to lie 

 most common on neglected farm yard trees. (Jrowcrs report that brown 

 rot is apt to occur in the hollows in the orchards. 



iCoiuicr, S. D. Excess solnlilc snlts in lunnid soils. .In\n-. .Viii. S..c. AjTrcinoinv. 

 9 :297-301. 1917. 



