tion and drouth injury of corn and truck crops. The heavy rainfall of July 
31st. and August Ist. was state-wide and relieved the drouth situation to 
a large extent although certain localities continued to suffer. 
There was hail injury to truck crops and strawberries at Madison, June 
12th. and to truck crops, corn and oats at Berne and Winona Lake, July 
19th. 
August was not especially hot and local rains were frequent. The rainfall 
was, however, below normal and was insuflicient, especially in certain local- 
ities, to offset the drouth injury of July. The first half of September was 
also hot and dry, thus further injuring potatoes and truck crops. Heavy 
rains, September 18th. to 22nd., followed by an exceptionally warm, wet, 
and late fall, with no frost until late in October, resulted in a very favorable 
late growing season. 
To summarize briefly, we have had this year an early period of warm 
weather in April followed by a destructive freeze, a cold wet May, an ex- 
ceptionally hot and dry June and July period, followed by a generally favor- 
able growing season lasting until late in October. Certain types of parasitic 
plant diseases are markedly influenced by such weather conditions. For 
example, the cold wet weather of May was especially favorable to certain 
fruit diseases such as apple scab, the subsequent hot dry weather to the 
Fusarium root diseases such as cabbage yellows, and the late growing sea- 
son resulted in a prolonged exposure of crops to certain types of disease such 
as the Septoria leaf-spot of tomato which increase in prevalence and se- 
verity as the season advances. 
DISEASES ARRANGED BY HOSTS. 
ALFALFA. 
Leaf-spot caused by Pseudopeziza medicaginis was generally prevalent. 
APPLE. 
Bloteh caused by Phyllosticta solitaria was the most serious disease in 
the southern part of the state on the susceptible varieties, Northwestern 
and Rhode Island Greenings, Stark, Ben Davis, Smith Cider, Duchess, and 
Arkansas Red, according to C. L. Burkholder who further reports that 
blotch was much worse than usual this year. According to J. Oskamp, C. L. 
3urkholder, and F. P. Cullinan, the northern limit of blotch as an important 
commercial factor in Indiana could be represented by a line across the state 
north of Indianapolis through the counties of Fountain, Montgomery, Boone, 
Hamilton, and Madison. The disease occurs, however, on the Stark and 
Northwestern Greening to a considerable degree as far north as the Wabash 
valley. The above observers also report that, in the badly infested southern 
half of the state, the disease seemed to be most severe in the southwestern 
corner and along the Ohio River. Oskamp reports severe blotch at Solon, 
Indiana. Bloteh was found in neglected orchards about Lafayette and in 
sprayed orchards at Bedford. Mooresville, Greenfield, and Knightstown. 
At Greenfield cankers on 1918 wood were not at all common. Counts 
