MAINE AGRICUIvTURAL KXP^RIMEINT STATION. 5 



Much biological data have already been obtained. These 

 problems with slow-growing plants have been carefuUly planned. 

 After the lapse of ten to twenty years it is expected that the 

 data o'btained will furnish a mass of material from the study 

 of which results of great practical as well as scientific values, 

 on the growth and propagation of the apple, will be obtained. 



Apple Tree Insects. 



During the past twenty-five years the Maine Station has 

 published several hundred pages regarding the apple insects of 

 Maine. In 1910 it published a 75 page illustrated circular 

 describing the more common apple tree insects of this State, 

 giving remedies and control measures. Pictures have also been 

 published of practically all the apple insects discussed in the 

 different publications of the Station. Naturally most of this 

 matter has dealt with the descriptions, habits, and methods of 

 control of injurious species. However, the friendly insects of 

 the orchard have not been neglected, and beneficial parasites 

 and predaceous bugs and beetles, which fight more than half 

 the battle for us have been presented with words of commen- 

 dation to win appreciation and figures to insure recognition. 



Space will here permit of only the merest mention of some of 

 the more important apple insects described by this Station. 



INSECTS DEVELOPING INSIDE THE ERUIT. 



Apple Maggot {Rhagoletis pomonella.) 

 The full life history of the apple maggot was first worked 

 out by this Station, resulting in the recommendations for the 

 destruction of infested fruit in various ways. 



Plum Curculio (Conotrachclus neninphar.) 



By a careful study of deformed apples in Maine, we ascer- 

 tained that a very large per cent of the misshapen apples in 

 this State are caused by feeding and oviposition punctures of 

 the plum curculios which develop in the early neglected 

 "dropped" fruit especially in June. Clean culture and the 

 destruction of earlv fallen fruit is recommended. 



