REPORT OF THE STATE ENTOMOLOGIST I917 



27 



lime sulphur and three-fourths of a pint of nicotine, while the eastern 

 row was sprayed with nicotine while the buds were in the pink. 



The second application was made July ioth to plots 2 and 3, 

 the " spray gun " being used as before. The preceding night it had 

 been raining and the trees did not dry off until 1.30 in the afternoon, 

 at which time spraying began. The apparatus carried easily to 

 the top of the trees though it overdrenched the foliage when the 

 limbs were within a foot or two of the nozzle. The best work was 

 secured at a distance of 6 to 10 feet from the trees and better results 

 could doubtless have been secured if the applications from the 

 platform had been supplemented by a man working from the ground. 

 The foliage showed injury from spray, evidently due to an excessive 

 amount and in August the ground was partly covered with fallen 

 leaves. There were used in the second spray 16 pounds of arsenate 

 of lead to 200 gallons and 5 gallons of lime sulphur wash. Approxi- 

 mately 12 gallons of material were applied to each tree. The 

 work was completed about 3 o'clock in the afternoon with the 

 probability of showers occurring within two hours. 



The setting of fruit was so light on plot 3 in particular that it 

 was not considered worth while to give the third spraying early in 

 August. Consequently the following data relates only to the 

 efficacy of one and two applications for the control of codling moth. 



The fruit was picked September 27th and classified by the Ento- 

 mologist and Mr L. J. Steele of the local farm bureau. 



Kendall orchard, plot 1 (sprayed once) 1017 



A No 



Per cent. 



B No 



Per cent. 



C No 



Per cent. 



D No 



Per cent. 



E No 



Per cent. 



F No 



Per cent. 



Total... 

 Per cent , 



TOTAL 

 FRUIT 



930 



994 



770 



1 571 



340 



232 



837 



PER- 

 FECT 



530 

 56.98 



220 

 22.13 



186 

 24. 16 



550 

 35-17 



135 



39-42 



59 



25.43 



:68o 

 34-71 



98 

 10.54 



243 

 24-33 



147 

 19.09 



268 

 17.05 



52 

 22.41 



838 

 ■32 



LEAF 

 ROLLER 



241 

 25-91 



311 

 31-28 



165 

 21.42 



422 

 26.86 



108 



31-76 



72 

 31.03 



3 319 

 27.26 



CODLING MOTH, WORMY 



Total 



400 

 43-01 



377 

 92 



514 



3 631 



33 71 



End 



20 

 2.01 



6 



• 77 



4 

 1.08 



2-15 



78 

 1. 61 



Side 



161 

 I73I 



179 

 18.00 



266 

 16.93 



46 

 3-53 



54 

 23.27 



767 

 15.85 



Shallow 



252 

 27.09 



209 

 21 .02 



91 

 11. 81 



243 



15.46 



60 

 17.64 



33 

 14-22 



888 

 18-35 



