6 
BULLETIN 151, U. S. DEPARTMENT OF AGRICULTURE. 
Moisture determinations have been made on each oi the plats at 
planting time and just before or just after harvest, to determine the 
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Fig. 2.— Diagram showing the average moisture content of the soil on plat B5-1, which was cropped 
annually to corn, and on plats A4-3 aud A 4-4, which were cropped biennially to corn, at the San 
Antonio Experiment Farm, January, 1910, to October, 1913. On each sampling date all the plats 
were sampled to a uniform depth, in most cases 6 feet, but in some instances 3 feet. 
amount of moisture present at planting time and the amount of 
stored moisture used from each plat. 
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Fig. 3.— Diagram showing the average moisture content of the soil on plat B5-3, which was cropped 
annually to cotton, and on plats A4-1 and xY4-2, which were cropped biennially to cotton, at the 
San Antonio Experiment Farm, January, 1910, to October, 1913. On each sampling date all the 
plats were sampled to a uniform depth, in most cases 6 feet, but in some instances 3 feet. 
By observing carefully the curves showing the moisture content 
in the various plats it will be seen that the moisture content of the 
