840 



STATE BOARD OF AGRICULTURE 



EXPERIMENTAL DATA. 



THE LIMB REQUIREMENT OF SOILS. 



In accordance with the foregoing method, the lime requirement of a 

 large number of soils was determined. Some of these soils were col- 

 lected at random near the vicinity of this Experiment Station, others 

 came from different parts of this State, and still others were specially 

 obtained from other States. All these soils received no other treatment 

 except drying in the air. In Table 5 there are presented only a few of 

 the soils employed and their respective lime requirement. The lime 

 requirement is expressed in number of c. c. of N/25 Ca(0H)2 taken up 

 by 2 grams of soil and in pounds of CaO in 2,000,000 pounds of soil in 

 the case of the mineral soils, and 1,000,000 pounds in the case of the 

 peats and mucks. 



TABLE 5. LIME REQUIREMENT OF SOILS. 



Soils. 



No. c. c. 



N/25Ca(OH); 

 absorbed by 

 2 grs. Soils. 



Pounds CaO 



in 



2,000.000 



pounds soil. 



1. Quartz sand 



2. Kaolin 



3. Heavy silt loam (gray) 



4. Ifeavy silt loam (black) 



5. Heavy clay loam (brown) .... 



6. Heavy silt loam (black) 



7. Light clay loam (black) 



8. Heavy silt loam (black) 



9. Light clay loam (gray) 



10. Heavy silt loam (gray) 



11. Light silt loam (black) 



12. Heavy silt loam (gray) 



13. Very light silt loam (black) . . 



14. Heavy sandy loam (black) . . . 



15. Light silt loam (gray) 



16. Coarse sand (brown) 



17. Coarse sand (brown) 



18. Medium sand (gray) 



19. Light sandy loam (black) . . . . 



20. Very fine sandy loam (brown) 



21. Heavy sand (brown) 



22. Very fine sandy loam (brown) 



23. Light silt loam (black) 



24. Light silt loam (brown) 



25. Light silt loam (brown) 



26. Light silt loam (brown) 



27. Light silt loam (brown) 



28. Peat 



29. Peat 



30. Peat 







560.9 



6,730.8 



10,096.2 



9,535.3 



10,096.2 

 6,730.8 

 8,412.5 

 4,487.2 

 3,920.3 



3,926.3 

 3,926.3 

 3,926.3 

 6,730.8 

 10,096.2 



3,926.3 

 6,730.8 

 1,121.8 

 2,243.6 

 1,682.7 



3,926.3 

 5,048.1 

 2,243.6 

 4,487.2 

 4,487.2 



4 , 487 . 2 

 4,487.2 



30.0 

 28.0 

 30.0 



16,827.0 

 15,705.2 

 16,827.0 



An examination of the above table will at once show that the lime 

 requirement of different soils varies greatly, according to the freezing 

 point method, the amounts varying from in the case of pure quartz 

 sand, to 10,096.2 pounds in heavy loams, to 1G,827.0 pounds in peats, of 



