30 ELEMENTARY AGRICULTURE 



7. A meadow hay crop of 2 tons per acre? 

 tons? 3 tons? 



8. A tobacco crop of 1,500 Ibs. per acre? 1,800 

 Ibs.? 



9. Compare the results and notice which crop is 

 hardest on the soil. 



10. Pupils should furnish data for similar prob- 

 lems. Tell how many acres of corn, wheat, hay, etc., 

 were raised on the farm at home, the number of bush- 

 els or tons per acre, and find the amount of the three 

 essential fertilizers taken off with the crop. 



