REPORT OF THE STATE ENTOMOLOGIST 1918 21 
two trees, X and Y, were three trees west of the six included in the 
experimental plot and were in the same row, tree Y being north of 
tree X. The lettering of the trees in the experimental plot was the 
same as in earlier years, it running from east to west. Tree B bore 
over 5 barrels, tree C 7% barrels, tree D approximately 1o barrels; 
tree F 73 barrels, tree X 63 barrels and the half of tree Y 4 barrels. 
The results of this work are given in the tabulation below. 
Heard orchard, 1918 


CODLING MOTH, WORMY 

TOTAL | PER- LEAF 
BUBIES rruit | rect | 5°42? |RoLier 
: Side Shal- 
Total | End Side Aug ew 
shotalls.s itera sete 3 718 | 2 840 94 808 128 3 14 8 112 
REE Cent ys ie cera ee ress 76.38 252) 920.73 3-44 08 37 720 3.01 
Motalixe jsyos 2 oye 4 979 | 3 125 399 | I 154 287 20 36 14 231 
Percenton cance cost tes oe. 62.75 8.01 | 23.17 oor .40 -72 .28 4.63 
D 
MLotalis ® so,o2 026 4:2" Se 777 il) 3) 700: 302 | I 320 328 4 51 39 274 
Pigeon einen ae ae 64.04 6.78 | 22.84 5.67 06 88 67 4.74 
atalon. cree. at 01 5 280 | 4 050 275 759 188 4 30 8 154 
Percent ccc line eters 76.70 Be2t | D4. 37 3.56 07 57 15 2.92 
LO Galen s4-He zest Pes 4 455 | 2 704 612 676 436 33 64 28 340 
Pert cent... fen ecole eee. 60.69 | 13.73 | 15.17 9.78 74 1.43 62 7.63 
AG 
ei botallincs. Actes e 2 925 | I 675 190 829 222 7 22 9 1903 
Pericenthe: poten sell sree 57.26 6.49 | 28.34 7.58 N23 GIS -30 6.59 
eas 00O000—Ooom™™ 
It will be seen from the above tabulation that the trees receiving 
a special tobacco-arsenate spray bore a smaller percentage of wormy 
fruit than those which were untreated. This is specially marked in 
the case of trees B and F, each with a total wormy fruit of 
about 34 per cent while the check trees yielded over 9} and 
71 per cent of wormy apples. The somewhat high percentage of 
wormy fruit on trees C and Dis probably to be accounted for in part 
at least by the large size of the trees and the crowded condition in 
the orchard rendering it difficult to secure the uniform and thorough 
treatment so desirable in experimental work. It can at least be 
said that this application appears to have reduced materially the 
number of wormy apples. The data here, as in earlier experimental 
work, indicate a considerable uniformity in the proportion of 
“ shallow-affected ” fruit to the total wormy. For example, the 
