DEMONSTRATION SPEAYING 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 appli(>d 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 eacli 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 lal)()r $2.59 for the four and one- 

 half hoiu's, 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 ])lat), 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. (iiRAULT. 



An orchard belonging to Mr. A. P. lioudebush, 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 codhng moth. This orchard consisted of about 400 trees 

 of such well-known varieties as Ben Davis, Home Beauty, Grimes 

 Golden, etc. The orchard was in sod; the trees were vigorous, from 

 about 25 to 30 feet tall, and well shaped, but neetlcd thinning. Dur- 

 ing the past two or three years they had been treateil 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 diflicidties wliich 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 bhiestone, 2 pounds of arsenate of lead, and 50 gal- 

 lons of water. Sj)raying was done on the following dates: Mav 10, 



