CONTENTS 



Page. 

 CHAPTEE I 

 Historical and General Survey 1 



CHAPTEE II 



Agro-geographical Conditions in Eelation to Crop Distri- 

 bution in South Africa 7 



CHAPTEE HI 

 Soil-Management : Tillage, Irrigation, Drainage and 



Brak Soils 17 



CHAPTEE IV 



Soil Management (Continued) : Fertilizer Practice, 



Green-manuring and Weed Control 44 



CHAPTEE V 

 The Eotation of Crops 62 



THE PRINCIPAL SUMMER CROPS 



CHAPTEE VI 

 Maize 73 



CHAPTEE VII 

 Sorghums 108 



CHAPTEE VIII 

 Potatoes 122 



CHAPTEE IX 

 Lucerne 139 



CHAPTEE X 

 Cow Peas, Soy Beans and Peanuts 152 



vii 



