THE REPOET OF THE 



No 36 



Emergence of Maggots from Fruit. 



Variety . 



Time of Maturity . 



Dropped . Em ergeiice . 



Interval 

 Elapsed . 



1911 



Harvest 



Early Strawberry Seeding. 



September Sw^eet 



Snow ^ . . . . 



Spy '..... 



1912 



Harvest 



Early Strawberry Seedmg. 



September Sweet 



Snow 



Summer. 



Autumn 



Early Winter 

 Winter 



Summer , 



Autumn 



Early Winter 



Spy : Winter 



July 31 . 

 Aug. 4 . 

 Aug. 8 . 

 Sept. 15 

 Sept. 22 



Aug. 15. 

 Aug. 17. 

 Aug. 24. 

 Aug. 27. 

 Sept. 13 



Aug. 3. 

 Aug. 12 

 Aug. 23 

 Oct. 7. 

 Oct. 23 



Aug. 29., 

 Sept. 3., 

 Sept. 12, 

 Sept. 16, 



Nov. 15 . 



1911 



3 days 

 8 days 



15 days 

 21 days 

 31 days 



1912 



14 days 



16 days 



19 days 



20 days 

 62 days 



If you care to look at this table you will notice in the case of harvest apples 

 that the number of days which elapsed between the dropping of the fruit and the 

 coming out of the larvae, was four times as long this season as it was during the 

 summer of 1911. 



Chickens and Cultivation. In endeavouring to prove that chickens will 

 do valuable work in controlling this pest in small orchards, we covered two plots 

 (each with one hundred pupae) with two extra large rearing boxes. We confined 

 two hens in each box, and left tihem in over two weeks. The plots were kept 

 cultivated. The chickens did not receive an over-liberal supply of food and were 

 thus forced to scratch amongst the loose soil for a living. Their quest for food 

 must have met with some success because'^ no flies appeared in either box. 



During the fall of 1911, 165 pupae were placed within a marked portion of a 

 chicken run. This piece of ground must have been worked over pretty thoroughly 

 by the 'hungry poultry, because only two adults escaped from it this summer. 



Natural Hosts. Regarding the natural hosts of the Apple Maggot I have 

 little to say, Mr. Good and myself found it at work on a seedling crab-apple 

 which was in close proximity to a badly affected orchard. We examined a large 

 number of hawthorns in Durham and Hastings Counties, but discovered no trace of 

 the insect on them. However, Mr. Swaine was kind enough to send us infested 

 haws which were collected in the neighborhood of St. Anne's, Que., and avg secured 

 larvae and pupae from them. 



Varieties Attacked. I have listed over thirty varieties of apples, which I 

 have found attacked by the Apple Maggot in 1912, and I am strongly inclined to 

 think that no variety is exempt. Harvests, Sweets (September, Tolman, etc.), 

 Snows, and Spies are probably the most seriously affected varieties in Ontario. 

 Acid apples such as Astraehan and Duchess are muc/h less subject to injury than 

 sub-acid and sweet varieties. 



