EXERCISE 19 (Continued) 



through a drought ? Classify the soils of your father's farm or of some farm in the neighborhood with 

 respect to their ability to absorb and retain moisture. 



References. Waters, H. J. Essentials of Agriculture, pp. 64-66. Ginn and Company. Mosier and 

 Gustafson. Soil Physics and Management, pp. 212-213. J- B. Lippincott Company. Lyon, Fippin, Buck- 

 man. Soils, their Property and Management, pp. 252-260. The Macmillan Company. 



AMOUNT OF MOISTURE IN THE SOIL WHICH THE PLANTS CAN USE 





[39] 



