124 



Journal of Agricultural Research 



Vol. XII, No. 3 



and on March i8 are given in Table VIII. From the time of the storage 

 of the fruit till November 14 the average temperature of the cellar was 

 approximately 50° F., and the average relative humidity about 61 per 

 cent. From November 14 to March 18 the temperature averaged 38° F., 

 and the relative humidity 80 per cent. 



Table VIII. — Percentage of Jonathan apples affected with hitter-pit in igi6 



Plat 

 No. 



Irrigation treatment. 



Heavy 



Medium 



Light 



Medium, followed by heavy 



Heavy, followed by light 



Alternating, heavy, medium, heavy. 



Alternating, heavy, medium, heavy, 



medium 



Percentage of apples affected with bitter-pit. 



Nov. 14. 



First 

 pick- 

 ing. 



2.9 



Second 

 pick- 

 ing. 



D. O 



•7 

 . o 

 . o 



•4 

 •4 



Total. 



1.6 



Mar. 18. 



First 

 pick- 

 ing. 



4.9 



2.9 



2.6 



II. I 



1.8 

 3-0 



S-8 



Second 

 pick- 

 ing. 



2-3 



1-7 



. o 



2. 2 



•3 

 5-2 



Total 



for 



year. 



3-5 



2-3 

 2. 2 



7-5 

 1.4 



3-7 

 4.2 



60;t 



I t I I I I I I I I I t I I 



V <o ^ "o V <o >. N <o ^ <o V to ^ 



^ •O ^ "0 ^ *0 ^ 



I I 1 I I I I 



"^. to ^ to •'^ <o ^ 





V *\ >. to > »0 ^ 



I r I I I I I 



V to ^ to "^ <<> ^ 

 iy !y ^ >> ..; L< J^ 



3( 



I r 



< I I 



■ to V to ^ tos 



60^ 





Fig. 9. — Diagram showing the soil-moisture conditions on plats of Jonathan apples in 1916. The average 

 percentage of saturation is given for each half month and is based on soil samples taken at a depth of 16 

 inches. Plat i received heavy irrigation throughout the season; plat 2, medium; plat 3, Ught; plat 4, 

 medium followed by heavy; plat s, heavy followed by light; plat 6, heavy in June, medium in July, and 

 heavy in August and September; plat 7, heavy till the middle of July, medium till August, heavy the 

 first half of August, and medium the remainder of the season. 



