Page. 



The Grapefruit and Shaddock 22 



Commercial Varieties of Oranges 22 



Varieties of Grapefruit 23 



HOW TO PLANT A TREE 24 



The Distance Apart 25 



HOW THE WILD TREES GROW 25 



Nature's Way 26 



Imitating Nature 26 



CULTURAL METHODS 28 



Local Wind Protection 28 



Mulching 28 



Cultivation 30 



Irrigation 31 



Fertilizing 32 



Lime 34 



Potash ^4 



Phosphorous 34 



Nitrogen 35 



Cover Crops 35 



INFLUENCE OF FERTILIZERS ON THE TREES 36 

 INFLUENCE OF FERTILIZERS ON THE FRUIT 39 



FERTILIZER FORMULAS 44 



HOW TO TAKE CARE OF A GROVE 51 



CITRUS ENEMIES AND REMEDIES 56 



Physiological Troubles 56 



Insects 58 



Formulas for Solutions 59 



