29 



Applications were made on the following dates: April 20, May 7, 

 May 16, June 8, June 26, Jiiiy 17, and August 11, making a total 

 of seven, of which, however, only six are to be considered as in any 

 way affecting the codling moth, the treatment on April 20 being for 

 scab and before the trees had bloomed. 



The second application was made just after the petals fell from the 

 blossoms and the third nine days later. These two, made while the 

 calyx lobes of the young apples were still spread, were for the pur- 

 pose of filling the calyx cavities with poison, and they were also 

 important treatments for the apple scab. 



The fourth application, on June 8, was designed especially to poison 

 the foliage and fruit to destroy the codling moth larvae, which it was 

 thought would be hatching in considerable numbers at about that 

 time. 



The three subsecpient applications were for the control of bitter-rot, 

 leaf -blight, and the second brood of the codling moth. The results 

 are shown in Table 8. 



Table 8. — Comparison of sound and wormy fruit frofu Gano Irccs sprayed and unsprayed, 

 Hansell orchard, Fordland, Mo., 1906. 



"3 apples. 



b 1 apple. 



<• 10 apples. 



The average yield of sound fruit of the two trees of Plot 1 which 

 received Bordeaux mixture and arsenate of lead is 98.1 per cent, and 

 from the two trees of Plot 2, treated with Bordeaux mixture and 

 Paris green, 98.4 per cent. The average yield of sound fruit from the 

 two untreated trees is 54.1 per cent, there being a gain in sound fruit 

 from the sprayed trees of 44 per cent. 



Ben Davis. — In each of Plots 1 and 2 of the Gano block, and in an 

 additional plot (Plot 3) were a few trees of the Ben Davis variety 



