28 



most important of all treatments— were far from satisfactory, effi- 

 cient spraying apparatus not then being available. Subsequent appli- 

 cations, however, were quite thorough, and the trees and fruit were 

 kept fairly well coated with the spray during the remainder of the 

 season. The orchard under ex])eriment, however, was joined on two 

 sides by orchards which were not sprayed and which served as sources 

 of reinfestation, the moths undoubtedly flying into the treated orchard 

 from the untreated ones. Injury from the second brood of the cod- 

 ling moth was therefore greater than would probably have been the 

 case had the adjacent orchards received proper treatment. 



The fruit from four untreated trees in the bitter-rot check was also 

 classified in regard to codling moth injury, to serve as a basis for 

 comparison with the sprayed trees. The yield of sound and wormy 

 fruit from the eight trees is detailed in Table 7. 



Table 7 .^Compmison of sound and uormy fruit from Jour Ben Davis trees sprayed with 

 Bordeaux mirture and arsenate of lead and from four unsprayed trees, Gipple orchard, 

 Bentonville, Ark., 1906. Fruit picked September 19 to 27. 



It will be seen that the average percentage of sound fruit from the 

 four sprayed trees is 88.4, and from the four unsprayed trees 37.5, a 

 gain in fruit free from codling moth injury of 50.9 per cent. 



Results in Missouri. — Demonstration work at Fordland, Mo., was 

 carried out in the orchard of Mr. J. E. Hansell, in a block of trees 

 from 10 to 12 years old, including the Gano, Jonathan, and Ben 

 Davis varieties. 



Gano. — Plot 1, of 14 trees, was sprayed with Bordeaux mixture and 

 arsenate of lead at the rate of 2 pounds to 50 gallons. 



Plot 2, of 16 trees, was spraj^ed with Bordeaux mixture and Paris 

 green at the rate of 1 pound to 150 gallons. 



A block of 15 trees was left untreated as a check. 



