REPORT OF THE STATE ENTOMOLOGIST I9IO I9 



number of side or end and side wormy of nearly 6.3 per cent from 

 that of plot I, by far the greater number being side wormy only. 

 The gain following this second application is apparent in the almost 

 total elimination of end wormy fruit and the material reduction in 

 the side wormy, the actual number being nearly one-half that in 

 plot I. 



The two check trees, X and Y, yielding respectively, 240 and 

 471 apples, a total of 711, 72.59 per cent being wormy, give an 

 excellent idea of the conditions which w'ould have prevailed had 

 there been no application of poison. They produced respectively, 

 only 40 per cent and 22.5 i)er cent of sound fruit and totals of 144 

 and 365 wormy apples, 80 of these on X and 242 on Y, or t,t, per 

 cent and 51 per cent respectively, of the total yield being side 

 wormy. There were only 28.41 per cent of sound fruit on the two 

 trees. It will be seen that under natural conditions, such as obtained 

 last year, approximately equal numbers were end and side wormy. 



Series 2. This series of three plots and two check trees was 

 laid out in the young orchard of Air C. R. Shons at Washington- 

 ville. These trees are about 18 years old, 16 or 18 feet high, thrifty, 

 rather thickly set and with a steep incline just southeast of the 

 experimental area. The three plots and the check trees, as wall be 

 seen by reference to figure 2, w^re all in the same row of trees, 

 running approximately northeasterly and consisted so far as the 

 experimental trees were concerned, w^ith but one exception, of 

 Baldwins. The two check trees were farthest from the highway. 

 The experimental trees in this series, as in the preceding, were 

 carefully selected so as to obtain, as far as possible, uniformity in 

 fruitage and infestation. Plots i and 2 were thoroughly sprayed 

 May nth wath arsenate of lead and bordeaux mixture. The first 

 tank of 150 gallons contained 6 pounds of arsenate of lead (15-16 

 per cent arsenic oxide). This was applied to the actual experi- 

 mental trees and the barrier trees, spraying them together with a 

 few trees on the northeast corner of plot 2. The second tank con- 

 tained 6 pounds of arsenate of lead and w^as put on the remaining 

 barrier trees on the north side of plots i and 2 and also on a portion 

 of the barrier trees on the southeast corner of plot 2. The remainder 

 of the barrier trees, namely, those on the southwest corner of plot 2 

 and the southern ones on plot i, were sprayed with 2 pounds of 

 arsenate of lead and i pound of paris green to 150 gallons, in con- 



