REPORT OF THE STATE ENTOMOLOGIST \[)\() 55 



tain there would be no serious infestation in this block, although 

 Trypeta flies were moderately abundant on nearby sweet bough 

 and Mcintosh trees. Repeated examinations of the sprayed trees 

 resulted in finding nothing very pronounced in the way of material 

 benefit though some dead insects, including one Sarcophagid, were 

 found upon the sprayed Cox orange trees, and Mr Powell stated 

 that he or his foreman at various times had seen a few dead Trypetas. 

 The number of these latter, however, was presumably far too small 

 to be of any great importance. That there had been a very few 

 Trypeta flies in this block of Cox orange trees sprayed as indicated 

 above, was revealed by an examination made September 14th. 

 The sprayed trees bore possibly two or three apples, each showing 

 a few signs of maggot work, while the fruit on the tree check or 

 unsprayed trees was presumably somewhat more maggoty though 

 it was impractical to obtain the exact percentages. The conditions, 

 so far as this one block is concerned, were much better than those 

 obtaining the two preceding seasons, according to statements made 

 by Mr Powell. This is probably to be explained in part at least 

 by the small crop of last year affording so little food that com- 

 paratively few insects were able to mature and issue in 19 16, though 

 there is a chance that a considerable number of the insects remain 

 quiescent through the summer and may appear next season, a biennial 

 habit which has been referred to above. 



Mr Powell was greatly encouraged by the results upon the nearby 

 Mcintosh trees which early in the season were infested by a number 

 of flies. The fruit was quite free from maggots in mid-September, 

 there certainly being no such infestation as upon the earlier varieties. 

 Unfortunately here, where flies were somewhat abundant, there 

 were no checks and accurate comparisons can not be made. 



The work of Prof. L. Caesar in the province of Ontario, and that 

 of Mr C. A. Good, assistant provincial entomologist of Nova Scotia, 

 seem to indicate considerable benefit from the application of 

 sweetened poisons. Mr Good l gives some data which suggest 

 substantial control resulting from this method of treatment. These 

 figures, taken from the same varieties but in different orchards, are 

 certainly promising though in view of the fact, as noted above, that 

 the apple maggot is such a local insect and, moreover, may have a 

 marked biennial habit, we can not help thinking that if material 

 benefits accrue from the use of this poison, they should be evident 

 on nearby trees as well as apparent on trees in well-separated 



1 Ent. Soc. of N. S. Proc, p. 72, 1915. 



