CONTENTS xiii 

 CHAPTER VII 



PAGE 



MANURES . , . . -49 



Exhaustion of the soil . . . . . -49 



Action of manures . . . . . .50 



General and special manures . . . 50 



General manures . . . . . 51 



Farm-yard manures . . . . ' . 5 1 



Compost . . . . .-. . .52 



Waste products . . . . . . -53 



Green crop manures . . . . . -53 



Special manures ."..-. . . . . .54 



Nitrogenous manures . . . . . -54 



Phosphatic manures I . . . . 56 



Bones . . . . . . .56 



Mineral phosphates . . . . . - 57 



Super phosphates . . .... 57 



Reduced phosphates . . . . , 5& 



Thomas-Gilchrist Slag . . . . .59 



Calcareous manures . . . . . . 59 



Gypsum ....*... 60 



Potash manures . . . . . . .60 



Kainit . . . ~~ . . . . .61 



Common salt 61 



CHAPTER VIII 



ROTATION OF CROPS . . . . . .62 



CHAPTER IX 

 DRAINAGE ......... 66 



CHAPTER X 

 IRRIGATION . . . -. . . . .70 



CHAPTER XI 



TILLAGE OPERATIONS . . . . 72 



The Cutlass . . . . -. . 73 



The Rake 73 



The Hoe . . , . ; ... 74 



The Spade . . . . . . -74 



The Fork . . . . . . . - 74 



The Dung Fork . . . . . . -75 



