13 



Table 4. — Comparison of sound and hitter-rot affected fruit from sprayed and unsprayed 

 trees of the Givcns variety, Lincoln orchard, Bcntonville, Ark., 1906. Fruit picked 

 October S and 12. 



Date of spraying and tree number. 



Trees sprayed July 10 and 23 and August 9 and 2' 



No. 1. ." : 



No. 2 



No. 3 



No. 4 



No. 5 



No. 6 



Nos. 1 to 6 coml)ined 



Trees not sprayed; 



A 



B 



C - 



A, B, and C combined 



Yield. 



Bushels. 

 19.86 

 21.52 

 23.00 

 16.02 

 21.26 

 17.82 

 119. 48 



4.75 

 0. 88 

 3.25 

 14.88 



Percent- 

 age of 

 sound 

 fruit. 



95. 43 

 97.82 

 99.62 

 99.58 

 99.65 

 98.80 

 98.41 



.10 

 12.25 

 30.89 

 10.29 



The Givens, being a late-maturing variety, was not picked until 

 October 8 and 12, two weeks later than the Ben Davis and six 

 weeks later than the Jonathan. Therefore, in order to carry the crop 

 through the season safely it was given an additional spraying on 

 August 27. As seen in Table 4, the results were 98.41 per cent of 

 sound fruit from the 6 sprayed trees and 10.29 per cent of sound fruit 

 from the 3 unsprayed trees. 



The above are four examples of almost complete protection agamst 

 bitter-rot by the thorough application of Bordeaux mixture, and 

 fully corroborate the results obtained m the experiments in the con- 

 trol of this disease conducted in Virginia in 1905. It would appear 

 that there is no longer a reasonable excuse for the severe losses from 

 this disease. 



Cost of treatments. — In Captain Lincoln's orchard only 400 gal- 

 lons of mixture were rec[uired for one spraying of 200 trees, and 

 the work was accomplished with four men and one team in one-half 

 day. The 40 pounds of bluestone at 8 cents a pound cost $3.20 and 

 the same amount of lime at one-half cent a pound cost 20 cents. The 

 four men, at $1.25 a day each, cost for the half day $2.50, and the team 

 cost $1 for the half day. This aggregates $6.90 for spraying 200 

 trees, or a little less than 3 J cents a tree for one application. This 

 makes a total cost of 10^ cents a tree for the three applications given 

 to the Jonathan, Gano, and Ben Davis trees, and 14 cents a tree for 

 the four applications that the Givens variety received. This is the 

 cost of the bitter-rot treatment alone; if the cost of the arsenate of 

 lead used for protection against the codling moth be included, 1| 

 cents per tree for each application should be added. 



It will be seen from the tables that the sprayed trees averaged 

 upward of 4 barrels to a tree, but being only 10 years old and well 

 pruned they were easily sprayed and the cost of treatment was less 

 than would be required for older trees. 



