CLOVERS AND OTHER LEGUMES 273 



and sell the hay, retaining only the roots in the land. If 

 this is done, the store of nitrogen in the soil is not increased 

 at all as a rule, while that of other essential elements is 

 actually diminished. 



QUESTIONS 



1. Name six ways in which legumes benefit the farmer. 



2. How do legumes add nitrogen to the soil? 



3. State seven reasons why clovers frequently fail. 



4. How would you. test a field for acidity ? 



5. Rank the small grains according to their suitability as 

 nurse crops for clovers. 



6. What is the objection to sowing clover seed broadcast 

 and harrowing it in? 



7. Under what conditions may we attribute clover failures 

 to drouth or winterkilling? 



8. Name five rules to follow in order to succeed with clovers 

 and other legumes. 



9. How would you correct soil acidity? 



10. How would you inoculate a field for alfalfa? 



11. State in detail how you would make a seed analysis. 



12. Why is a germination test particularly necessary before 

 sowing sweet clover ? 



13. Why is sweet clover superior to any other plant for re- 

 storing womout soils? 



14. What is the standard pasture plant among the clovers ? 



15. Why should not the hay from legumes be sold from the 

 farm? 



