REFERENCES 151 



county agent will be appreciated by the older boys. This study 

 may be combined with others, such as grain raising, baby-beef pro- 

 duction, or the growing of forage crops. It would be well if a number 

 of pupils were to work together in a cooperative group, using a short 

 rotation of crops. The members undertaking this work should be 

 organized into a club. This adds zest and develops the spirit of 

 sympathetic helpfulness, in place of that selfish rivalry which is often 

 the fruit of contest between individuals. The basis of the award may 

 be as follows : 



a. The plan and management of rotation 20 



b. The average yield per acre 20 



c. The net profit on investment . 20 



d. The fertile condition of the soil at the time of rotation . . 20 



e. Soil and crop records, with written report 20 



Total score 100 



REFERENCES 



The Soil. F. H. King. 



Physics of Agriculture. F. H. King. 



Farmers' Bulletins, Washington, D. C. 



245. Renovation of Worn-out Soils. 



320. Management of Soil to Conserve Moisture. 



406. Soil Conservation. 



