COXTHNTS/ 



I'uge. 



Summary of recent investigations of tin- \ alui' < if catti as stock food 7 



Introduction 7 



Tlie sainjiles of cacti analyzed 8 



Water content 8 



Ash content 9 



Food value of different parts of the ]>lant 11 



A l)alanced ration of prickly pear 12 



Relative value of the three groups of cacti 14 



Common and scientific names 15 



Climatic requirements of pricklj- pears 16 



The use of prickly ]>ear in Mexico 17 



The species of cacti and their analyses 17 



A successful dairy farm 19 



Introduction 19 



The rotation followed 20 



Harvesting the hay 21 



Feed for the cows and calves 22 



Butter production 23 



Poultry production 23 



Results achieved 23 



Planning a cropping system 25 



Introduction 25 



B'arm selected to illustrate the methods used in planning a cropping system. 27 



The rotations adopted 29 



Arrangement of cropping systems for farms 31 



The application of vegetative propagation to leguminous forage plants 33 



Introduction 33 



Description of the method employed in the vegetative propagation of legu- 

 minous plants 34 



Application of the method to practical plant-breeding problems 35 



The control of Texas root-rot of cotton '39 



Introduction 39 



Cause of root-rot - - 39 



Efforts to control the disease 40 



Rotation of crops 40 



Aeration of the soil by deep plowing 40 



Deep fall plowing 40 



Deep spring plowing and subsoiling 41 



Treatment recommended 41 



« The seven papers constituting this bulletin were issued in separate form on 



January 4, January 30, ^Nlarch 14, March 23, March 30, June 10, and July 6, 1907, 

 respectively. 



102 3 



