CONTENTS 



CHAPTER XIV 



PAGES 



THE USE OF STABLE MANURE 139-148 



Controlling factors 139 



Direct use for corn 140 



Effect upon moisture 141 



Manure on grass 142 



Manure on potatoes 143 



When to plow down 144 



Heavy applications 144 



Reenforcement with minerals 145 



Durability of manure 147 



CHAPTER XV 



CHOP-ROTATIONS 149-158 



The farm scheme 149 



Value of rotation 150 



Selection of crops 151 



An old succession of crops 152 



Corn two years 153 



The oat crop . . 154 



Two crops of wheat 154 



The clover and timothy 154 



Two legumes hi the rotation 155 



Potatoes after corn 156 



A three-years' rotation 157 



Grain and clover 158 



Potatoes and crimson clover 158 



CHAPTER XVI 



THE NEED OP COMMERCIAL FERTILIZERS . . . 159-170 



Loss of plant-food 159 



Prejudice against commercial fertilizers .... 160 



Are fertilizers stimulants ? 161 



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