114 



Journal of Agricultural Research 



Vol. XII, No. 3 



EXPERIMENTS ON GRIMES APPLES IN I915 



Similar irrigation experiments were carried out in 191 5 on Grimes 

 apples. The experimental plats were located on bottom land along the 

 Wenatchee River. The soil was of an alluvial nature composed of 



so^ 



60% 



*^) >v Wv >j U 





^ ^ s^' to q: 



^ i> "^ > "O 



k 



Fig. 2. — Diagram showing the soil-moisture conditions in irrigated plats of Grimes apples in 1915. The 

 vertical bars show the average percentage of saturation for each half month based on the average of soil 

 samples at depths of 24 and 36 inches. 



medium heavy sandy loam with considerable clay and was uniform to 

 a depth of 3 feet. It was kept under cultivation in the tree row. The 

 trees were 5 years old and making a vigorous growth. They were quite 

 uniform in size and vigor and satisfactory in every respect for compara- 

 tive experiments. Three trees were used in each plat. The fruit was 



