128 



Journal of Agricultural Research 



Vol. XII. No. 3 



Table X. — Percentage of Jonathan apples affected with Jonathan-spot in iqi^ 



There was more Jonathan-spot on the large apples than on the small 

 ones, and at the time of the first note-taking there was more on the fruit 

 of the first and second pickings than on that of the third. Irrigation 

 apparently had but little effect upon the disease. The apples from plat 

 5 had the least Jonathan-spot; but, as already mentioned, these were 

 badly sunburned and therefore not suitable for use in comparison with 

 those of the other plats. 



In 1 91 6 the experiments were continued in the same orchard. All the 

 trees were in a healthy, vigorous condition except those of plat 3. These 

 were the same as used in plat 5 the preceding season and showed the 

 effects of the previous year's drouth in their thin foliage and short twig 

 growth. The soil-moisture conditions for the various plats are given in 

 figure 9. Pickings were made on September 22 and October 2. The 

 fruit from plats 5 and 7 was rather poorly colored, while that from plat 

 3 was very highly colored. The conditions of storage have already been 

 given in connection with the notes on bitter-pit. The results for the 

 season are shown in Tables XI and XII. 



