132 FARM AND SCHOOL PROBLEMS. 



8. What amount of each of the following elements will be removed 

 from an acre yielding 50 bushels of oats; nitrogen; phosphorus; potash? 



9. What are the advantages of oats as a grain feed for horses? 



10. In what ways is oats used as a feed for cows; hogs; poultry; 

 sheep ? 



How deep should oats be planted? 



Information. 



1. Write to your state experiment station for information relative 

 to oats production in your state? 



2. The following bulletins are recommended from two great oats 

 growing states and the national government : 



Bulletin 257. Oats, Experiment Station, Wooster, Ohio. 



Bulletin 128. Some Data for Oat Growers, Agricultural Ex- 

 periment Station, Ames, Iowa. 



Farmers' Bulletin, No. 424. Oats; Growing the Crop, United 

 States Department of Agriculture. 



Farmers' Bulletin, No. 420. Oats; Distribution and Uses. 

 United States Department of Agriculture, Washington, D. C. 



Circular 30. Improvement of the Oat Crop. U. S. Dept. of Ag. 



Wheat. 



England after a thousand years of cropping is still raising 

 33 bushels of wheat per acre. 



The wheat crop stands second in importance among the 

 cereal crops of the United States. We raise about one-fifth of 

 the world's production, and yet our production per acre is far 

 below that of most of the wheat producing countries of the old 

 world. The states of the Union that lead in the production of 

 wheat in the order of their rank are North Dakota, Kansas, Wash- 

 ington, Minnesota, Illinois, Nebraska, Ohio, Missouri and In- 

 diana. 



PROBLEMS. 



1. The average yield for the period 1902-1911, in the countries 

 named is as follows: 



Germany 29.8 bushels per acre. 



Austria 19.4 bushels per acre. 



Hungary proper 18.4 bushels per acre. 



France 20.3 bushels per acre. 



United Kingdom 33.0 bushels per acre. 



United States 14.0 bushels per acre. 



What is the average yield for these six countries? 





