CONTENTS 7 



CHAPTER V III. Potash 70 



Potash as essential plant food. Soils which need potash most. 

 What is the best form of potash? Crude potash salts. Manufac- 

 tured potash salts. Capacity of the soil for absorbing potash. 

 Dangers from potash. Potash in waste products. Cotton seed hull 

 ashes. Green sand marl. 



CHAPTER IX. Lime and Liming Land 77 



Sulphate of lime from plaster. Gas house lime. Sulphate of lime as 

 a waste product. Agricultural salt. Shell marls. Tan bark ashes. 

 Swamp muck or peat. 



CHAPTER X. Mixing Fertilizers on the Farm 85 



How to mix fertilizers. 



CHAPTER XI. The Maintenance of Fertility 94 



Using fertilizers in continuous cropping. Why a short rotation is 

 best. Some of the mistakes made. 



CHAPTER XII. How to Use Commercial Fertilizers for the Maintenance 



of Fertility 102 



The rotation for the cotton crop. What is the best rotation for cot- 

 ton? Curing the pea vine hay. Resting the land. Another cotton 

 rotation. 



CHAPTER XIII. Where Winter Wheat is the Money Crop 120 



Rotations for the winter wheat crop. Fertilizers for wheat. What 

 a crop of wheat removes from the soil. Thorough preparation of the 

 soil as important as fertilizers for wheat. Green manuring for wheat. 

 Wheat after a hoed crop. 



CHAPTER XIV. Fertilizers for the Permanent Pasture 133 



Grasses for permanent pasture. 



CHAPTER XV. Fertilizers Where Hay is the Money Crop 137 



Farming for hay. 



CHAPTER XVI. Where Tobacco is the Money Crop 141 



Forms of fertilizers for tobacco. 



CHAPTER XVII. Fertilizers for the Corn Crop 146 



How shall we utilize the corn crop as a food crop? The silo and en- 

 silage. Making the ensilage. The feeding value of ensilage. Ma- 

 nure from ensilage feeding. Shredding the fodder from corn crop. 



CHAPTER XVI II. Testing the Needs of the Soil 154 



