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THE CANADIAN ENTOMOLOGIST 



In many cases the injury is much greater than this, a larger pro- 

 portion of those injured being classed as No. 3's and culls. 



Codling Moth Injury to the Picked Fruit. 



In the check plots the Codling Moth injury was 4.54 per cent., 

 while in the plots receiving spray 3 the injury averaged 5 per cent. 

 Both calyx and side injury were present, and the injury predomin- 

 ating. 



Economic Results. 



Apples are seldom worth less than $1.00 per barrel on the trees 

 in Nova Scotia. For every 100 barrels grown by proper spraying 

 ,in orchards similarly situated to the one in which we experimented, 

 45 barrels of the picked fruit in every 100 and 12.97 per cent, more 

 Nos. 1 and 2; among those grown may be attributed directly to 

 the control of Fruit Worms, Bud-moths and Codling Moth by 

 spraying. The results obtained were practically from two spray- 

 ings, one from one to three days before the blossoms, and one 

 directly after the blossoms. Spray 4 gives some results when 

 applied alone in the control of Fruit Worms, Bud-moths and Codling 

 Moth; but when spray 2 and 3 are applied, the additional benefit 

 of the later spray becomes so small as to be scarcely noticeable. 



Cost of Spraying 



The cost in Nova Scotia varies, but, on the average, five cents 

 per barrel per application more than covers the cost; reckoning the 

 dilute mixture of lime and sulphur and lead arsenate at one cent 

 per gallon and the cost of the application at one and one-half cents 

 per gallon and two gallons per barrel per application. For two 

 applications of spray mixture costing ten dollars per 100 barrels we 

 had in return 45 barrels more of apples and 12.97 barrels more 

 Nos. 1 and 2 to the hundred due to insect control alone. We did 



