72 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



The five sprayed trees show an average of 94.70 per cent of fruit 

 not Avormy as against 22.51 per cent, the average percentage of fruit 

 not wornw from the unsprayed trees. This is,a saving of 72.19 per 

 cent of the crop for the treated trees. 



Leaving out the wear of apparatus, such as pump, wagon, etc., 

 the cost of the six applications for the entire orchard is given as fol- 

 lows: Two men 22^ days at $1.25 per day, S56.25; 2 men 22^ days 

 at $1 per day, S45; 2 horses 22* days at'Sl per day, $45, making a 

 total cost for labor of $146.25. 



For the 620 trees, 14,100 gallons of spray were required, the mate- 

 rial costing as follows: Arsenate of lead, 324 pounds at $0,125 per 

 pound,' $40.50; copper sulphate, 1,260 pounds at $0.08f per pound, 

 $110.25; lime, 11 barrels at $0.80 per barrel, $8.80, making a total 

 cost for material and labor of $305.80, or an average cost for all spray- 

 ing of 49 cents per tree. 



The 5 sprayed Winesap trees gave a yield of 18 barrels of Xo. 1 apples, 

 1 barrel of Xo. 2's, and one-half barrel of culls. The price received 

 for these grades of red fruit was $3.25, $2, and $1.75, respectively, 

 per barrel. This gives a total receipt of $61.35 for the 5 sprayed 

 trees or $12.27 per free. This, minus 49 cents, the cost of spraying, 

 leaves a net return of $11.78 per tree. The 3'ield of the 5 unsprayed 

 trees "was Ij barrels of Xo. 1 apples, 1 barrel of Xo. 2's, and 3 barrels 

 of culls, giving a total return of $11.31 for the 5 trees, or $2.26 per 

 tree, leaving a difference of $9.25 as a net gain per tree in favor of the 

 sprayed trees. 



The net gain was even more favorable with the Yellow Xewtown 

 Pippin variety, the 5 sprayed trees yielding 20^ barrels of Xo. 1 apples, 

 1 barrel of Xo. 2's, and one-half barrel of culls. The prices received 

 for these grades of this variety were $4.25, $3, and $1.75, respectively, 

 per barrel, giving a total of $90.97 for the 5 trees, or $18.19 per tree. 

 This, minus 49 cents, the cost of spraying, leaves a net return of $17.70 

 per tree. The 5 unsprayed trees gave only If barrels of Xo. 1 apples, 

 3 barrels of Xo. 2's, and 7h barrels of culls; at the same price this gives 

 a total of $29.12 for the fruit from the 5 unsprayed trees, or $5.82 

 per tree, leaving a difference for the sprayed trees of $11.88 net gain 

 per tree. 



DEMONSTRATION SPRAYING IN PENNSYLVANIA IN 1907. 

 By Fred .Johnsox. 



The apple orchard used in this demonstration is situated on a 

 high bluff along the shore of Lake Erie about a mile north of the 

 village of Xorth East, Pa. It is boundetl on three sides by steep 

 banks, with woods on the north and east, and open on the south 



