REPORT OF THE STATE ENTOMOLOGIST [Ql6 



21 



at the same time showed some though not an excessive amount of 

 injury. Green fruit worms were noticeably scarcer than in [915. 

 Plot 3 was sprayed for the third time August 5th, 20 pounds of 

 Dow's arsenate of lead being used to 250 gallons of water, to which 

 was added lime-sulphur as before. This amount sufficed for the 

 treatment of 23 trees. 



Kendall orchard, plot 1 (sprayed once), 1916 







TOTAL 

 FRUIT 



PER- 

 FECT 



SCAB 



LEAF 

 ROLLER 



CODLING MOTH, WORMY 



TREE 



Total 



End 



Side 

 July 



Shal- 

 low 



Side 

 August 



A 



Xo 



I 740 



936 

 53-79 



1 050 

 52.89 



335 



57.66 



927 

 53.09 



271 

 54-63 



161 

 56.61 



538 

 30.92 



533 

 26.82 



89 

 1532 



327 

 18.73 



66 

 1330 



43 

 15.14 



215 

 12.35 



323 



17.26 



134 

 23-06 



415 

 23.75 



112 

 22.49 



24.86 



185 

 10.63 



153 



7.70 



5i 

 8.77 



186 

 10.65 



68 

 13.50 



19 

 6.69 



7 

 2 



1 



62 

 363 



38 

 1. 91 



13 

 2.23 



31 



1.77 



6 



1 .20 



3 

 1.05 



60 



3-44 



80 

 4.26 



30 

 5.16 



113 

 6.47 



4i 

 8.26 



15 

 5.28 



56 

 3 . 21 



B 



No 



I 987 



4i 

 2 .06 



C 



No 



581 



14 

 2.40 



D 



No 



I 746 



59 

 3-37 



E 

 F 



No 



Per cent. . . . 



No 



496 



284 



19 

 383 



1 











T 

 P 



otal 



6 834 



3 680 



53.84 



1 596 

 2335 



I 270 

 18.58 



662 

 9.68 



12 

 0. 17 



153 

 2.23 



339 

 4.96 



190 

 2.78 









It will be seen from the preceding tabulation that the yield of 

 trees in plot 1 ranged from 284 to 1987, a rather wide variation 

 which is not accompanied by a corresponding difference in the 

 number of wormy apples. The percentages of the latter on indi- 

 vidual trees varies from 6.69 to 13.50, the lowest percentage being 

 upon one of the least fruitful trees, contrary to the usual rule. The 

 average percentage of wormy apples for the plot was 9.68, a marked 

 contrast to the 27.67 per cent of wormy fruit obtained from these 

 trees in 19 15. It should be noted that approximately half of the 

 apples on the entire plot had the characteristic side injury or 

 " shallow " wound produced by larvae hatching from late-deposited 

 eggs entering the fruit, making the characteristic circular gallery 

 just under the skin and then deserting the initial point of attack. 

 The damage resulting from end wormy infestations was almost 

 negligible, it averaging for the plot less than one-fifth of 1 per 

 cent. 



