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DEMONSTRATION SPRAYING FOR THE CODLING MOTH. 75 
culls were also sorted into two grades. Those above 2 inches were 
used for canning and sold for 60 cents per hundredweight, while 
those of the smaller grade were used for cider-making purposes and 
sold for 30 cents per hundredweight. 
The total amount of spray applied to the 14 trees was 182 gallons, 
about 13 gallons per tree for the three applications, at a cost of about 
2 cents per gallon, or $3.64 for the 14 trees. 
The time required to make the applications was about one and one- 
half hours for each time, or about four and one-half hours for the 
three applications. 
Two men and a team were used in the work, and the wage paid was 
40 cents per hour for man and team, and 17.5 cents per hour for the 
additional man, making the cost of labor $2.59 for the four and one- 
half hours, the total cost of labor and material being $6.23. Allowing 
$1 for gasoline and wear and tear on the machine, there was a total 
expenditure of $7.23. Deducting this amount, together with $15.30 
(the value of the crop from the untreated check plat), from $61.05 (the 
value of the crop from the sprayed plat), there is a net gain of $38.52 
on the 14 trees, or $2.75 per tree for the sprayed trees. 
DEMONSTRATION SPRAYING IN OHIO IN 1907. 
By A. A. GrRavtr. 
An orchard belonging to Mr. A. P. Roudebush, a prominent farmer 
and fruit grower of Owensville, Clermont County, Ohio, and one of the 
largest in that vicinity, was selected for this spraying demonstration 
against the codling moth. This orchard consisted of about 400 trees 
of such well-known varieties as Ben Davis, Rome Beauty, Grimes 
Golden, etc. The orchard was in sod; the trees were vigorous, from 
about 25 to 30 feet tall, and well shaped, but needed thinning. Dur- 
ing the past two or three years they had been treated with not more 
than two applications of Bordeaux mixture and arsenate of lead. The 
codling moth was a well-established pest in this orchard, and the 
owner was discouraged over the difficulties which he had encountered 
in combating it. 
The plat selected for this work consisted of a single row of 27 Ben 
Davis trees, 10 years of age, in the southwestern portion of the 
orchard, and adjoining an orchard of young trees; in the center of 
the next row to the northeast 10 trees of similar variety and age were 
left untreated for purposes of comparison. Four applications of 
Bordeaux mixture and an arsenical were made, using 5 pounds of 
lime, 5 pounds of bluestone, 2 pounds of arsenate of lead, and 50 gal- 
lons of water. Spraying was done on the following dates: May 10, 
