A SOIL MOISTURE STUDY 27 



Weigh out two 200-gram lots of each of the other samples 

 to be studied. 



Spread the soil out over the bottom of the weighing pan 

 in a thin layer and put in some convenient place to dry. 

 After four days drying weigh each sample and record weight. 

 Repeat the drying and weighing each day until a constant 

 weight is obtained. The loss in weight represents the capil- 

 lary water content of the soil. 



Determine the percentage of capillary moisture computed 

 on the weight of the air-dry soil. Tabulate the results in 

 the accompanying outline. 



QUESTIONS 



1 . Which foot contains the largest amount of water ? 



2. Which soil contains the most water, the cultivated or the 

 uncultivated ? 



3. Discuss the reasons for the difference in moisture formerly in 

 the two soils. 



4. From the moisture determination, figure the number of pounds 

 of water there would be in the acre three feet of soil in the cultiva- 

 ted and uncultivated field, weight of soil the acre foot 3,500,000 

 pounds. 



