252 ILLINOIS STATE ACADEMY OF SCIENCE 



out the entire state. It is estimated to have caused a 

 reduction in the crop of 4 per cent. 



Sooty blotch (Gloeodes pomigena (Schw.) Colby) was 

 practically coexistent with fly speck, and caused no dam- 

 age. 



Apricot: Leaf blight (Pseudomonas pruni E. F. S.) 

 was found twice in southern Illinois. One collection is 

 from Massac county and one from Saline county. This 

 is the first report of occurrence on this host in Illinois. 



Cherry: Bacterial shot hole (Pseudomonas pruni E. 

 F. S.) was reported from Galatia, Saline county, July 13. 

 Subsequent reports came in from scattered localities 

 throughout the state. The infection was slight in all 

 cases. This is the first report of occurrence on this host 

 in Illinois. 



Brown rot (Sclerotinia cinerea (Bon.) Schroet). Two 

 collections were made, one in Jackson and one in Edwards 

 county. Neither was severe. 



Powdery mildew (Podosphaera oxyacanthae (Fr.) 

 deBary) was abundant over the state, and in most cases 

 appeared to be rather severe. A crop reduction of 1.5 

 per cent has been attributed to it. The earliest collection 

 was made near Whittington, in Franklin county, June 24. 



Shot hole (Coccomyces hiemalis Higg.) was slightly 

 more severe than usual. It occurred uniformly over the 

 state and was the cause of some slight reduction in the 

 crop. 



Peach: Bacterial shot hole (Pseudomonas pruni E. F. 

 S.) appeared in its usual abundance. There was consid- 

 erable leaf injury with serious defoliation locally. It is 

 estimated that 90 per cent of the peach trees of the state 

 suffer from the attack of this disease annually. The 

 probable crop reduction for 1922 is estimated at 2 per 

 cent. 



Brown rot (Sclerotinia cinerea (Bon.) Schroet.) ap- 

 peared generally over the state. The moist spring 

 weather gave opportunity for an early development of 

 blossom and twig blight which was first reported early in 

 April from Madison county. Extremely dry and hot 

 weather later in the season held the fruit infection in 

 check. The first fruit rot was reported June 26 from 



