^ Massachusetts 



AGRICULTURAL EXPERIMENT STATION 



BULLETIN No. 285 JUNE, 1932 



The Relation of Temperature 



to the Activity and Control of the 



Plum Curculio in Apples 



By W. D. Whitcomb 



The plum curculio frequently does more damage to apples in Massa- 

 chusetts than all other insects together. As a result of the heavy loss to 

 fruit growers, studies of the factors which influence the activity of this 

 insect were conducted at Waltham. Early in the work temperature 

 was found to play an important part in the problem of control, and the 

 results of studies with this factor are here reported. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



