306 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
The average yield of the sprayed Greenings was 694 apples. 
and of the unsprayed trees, 1,529 apples. The average yield of 
the sprayed Baldwins was 1,952 apples as compared with 3,404 
apples on the unsprayed trees. While recognizing the fact that 
there may be considerable variation in the amounts and regular- 
ity of fruit production for individual trees it is believed that a 
good portion of the differences noted between the sprayed and 
unsprayed trees is to be attributed to the effects of the sulphur 
sprays. 
iffects of sprays upon apples.—As the crop from a tree*was 
picked and examined it was piled on the ground to compare with 
yields of trees occupying similar positions in adjacent rows under 
different treatments. After the entire crop had been so arranged 
it was apparent, upon examination, that the apples from the 
sulphur-treated trees were on an average of better color and of 
a larger size than those from the trees which had not received 
such treatment. These results were especially marked upon the 
Baldwin apples but were not so conspicuous upon the Greenings; 
as the yields of this variety were, on the whole, small and the 
fruit, irrespective of treatment, was generally of good size and 
color. The superior coloration of the fruit of the sulphur- 
treated trees was to a large degree due to its freedom from scale 
and scab, but with the yields of a number of trees the hues of 
the fruit were also appreciably heightened and tended to become 
more brilliant. To ascertain the extent of the variation in the 
size of the apples by the different treatments the crops of four 
Greenings and eight Baldwins, representing all the lots, were 
graded carefully. In making the assortment, the apples were 
classified into three sizes. (1) Apples with a diameter of 21, 
inches or less; (2) with a diameter of more than 214 inches and 
less than 3 inches; and (3) with a diameter of 3 or more inches, 
The results are shown in the accompanying table: 
TABLE IIT.—GRADES OF PICKED APPLES, BY SIZE, IN ORCHARD IV. 


Tree. | Variety. TREATMENT. Oy chee Games) "| totaeer Size | Size 
ETL PRE No. No. No. No. | Per ct.| Per ct.| Per ct. 
1 (|Greening...|/Check............ ae 4 928 209 | 1141 0.4] 81.3 18.3 
2 |Greening:../3 Bordeaux - arsenical; 132 673 | 33 838 | 15.8 | 80.3 3.9 
mixture. 
3 |Greening.../1 Sulphur +,2 bor-| 150 277 6 | 4383 | 34.6 | 64.0 1.4 
deaux-arsenical mix- s 
ture, 
