EXERCISE 25 (Continued) 



your community ? What does lime do in addition to correcting acidity ? How much ground limestone is 

 usually applied to the acre ? How much air-slaked lime ? Name the principal crops of the neighborhood 

 which are most sensitive to acid in the soil. Do your tests indicate that the soils of the neighborhood 

 are acid ? Is lime used locally as a soil corrective ? In which form is it generally used, as ground lime- 

 stone or as slaked lime? Explain the difference in the preparation, composition, cost and proper use. 



References. Waters, H. J. Essentials of Agriculture, p. 63. Ginn and Company. Burkett, C. W. 

 Soils, p. 104. Orange Judd Company. Lyon, Fippin, Buckman. Soils, their Properties and Management, 

 pp. 375-391. The Macmillan Company. Bulletin 77, United States Department of Agriculture. 



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