REPORT OF THE DEPARTMENT OF 
BOTANY. 
INVESTIGATIONS ON SOME FRUIT DISEASES.* 
He ymEUVstACk 
SUMMARY. 
Apples artificially inoculated with decay-producing fungi were 
placed in commercial cold storage, temperature 32° F., and held 
there for two months or more. Of the several species used, 
Penicillium glauctm (blue mold), was the only one that 
developed and caused decay. Upon removal to a warmer tempera- 
ture all the speceis of fungi developed and caused decay. 
Decay was not entirely prevented in inoculated apples held in a 
temperature of 35° to 56°; and developed vigorously in a tem- 
perature of 48° to 69°. 
Peaies  iocilated, swith) sclerotinia .fructigena 
(brown rot), the most common and destructive decay of peaches, 
developed a small amount of decay in two weeks in a temperature 
Oise ge OT. 
ppores-or 9P enicrllaum ol atucitt m*) (blue mold);'can be 
destroyed by fumigation with sulphur, but when these fumes come 
in contact with ripe apples the commercial value of the fruit is 
lessened. 
Spraying immature apples with bordeaux mixture did not check 
the development of spots of Venturia inzqualis (scab), 
that had started previous to the application of the bordeaux 
m‘xture. 


*A reprint of Bulletin No. 297. 
[123] 
