190 Proceedings of Indiana Academy of Science. 
Rust (Gymnosporangium juniperi-virginianae) was yery severe on t 
foliage of susceptible varieties. It was noted on Jonathan fruit: a 
foliage in Morgan County June 25. 
Powdery mildew (Podosphacra leucotricha) was found on the Missouri 
Pippin variety at Ladoga by Dr. P. J. Anderson. 
The collar rot of the Grimes variety which was recorded last year (as 
root rot) as prevalent in southern Indiana causes the greatest fatality 
when the trees are 20 to 25 years old according to Burkholder. He re- 
ports one case of a 25-year-old orchard near Madison in which 25 per cent 
of the trees are dead or dying. Since the Grimes is otherwise a very desir- 
able variety for southern Indiana it has been successfully top worked on 
other stocks. : 
In the case of all varieties planted on newly cleared land, Burkholder 
reports that a certain percentage of root rot has occurred. 
Fig. 3. Apple Jonathan spot. 
Jonathan spot (Fig. 3) was noted at Mooresville. Cullinan reports this 
trouble as very prevalent this year and found it present on unpicked fruit 
at Laurel. Burkholder noted the same thing in Porter County and on 
King and Black Twig apples still on the trees at Aurora. 
sitter pit was rather Common on Stark apples at Mooresville and is re- 
ported by Cullinan as common on Stark, Grimes, and Baldwin apples. 
Water core was found at Knightstown. 
Frost injury occurred in many sections. At Mooresville blossom ¢Glusters 
and whole spurs were killed outright and the set of fruit was severely cut. 
Some frost banding also occurred. The first leaves were stunted, dark 
green and wrinkled and many turned yellow and dropped off. 
Severe hail injury occurred near Decker June 23 and the quality of 
the crop was greatly lowered. In one orchard the entire crop was rendered 
wifit for market by the extreme malformation resulting from the hail 
bruises. 
According to Burkholder spray injury to leaves and fruit oceurred at 
