108 PRODUCTIVE FARMING 



the growth of weeds and will prevent many of them from 

 seeding. It also helps the growth of all grasses. The cutting 

 should be made high, as a low cutting destroys too much of 

 the valuable leaf growth of the lower grasses. In a pasture, 

 the tall weeds and tall grasses that have sent up seed stalks 

 should be mown down. The cows do not like them because 

 they are old and fibrous. 



Sheep may be used in a very rough pasture along with 

 cows to help keep down the weeds. They have a liking for 

 many kinds of weeds and keep them eaten close to the 

 ground. Too many sheep will eat the grasses so close that 

 cows cannot get enough. 



REVIEW. 



1. What do you understand by system or lack of system referred 

 to on the first page of this chapter? 



2. After making a farm map, tell whether you think there are too 

 many fields or too few. 



3. Eastern farms usually have many more fields than Western 

 farms. Tell of the advantages if any in each case. 



4. What are the advantages of having a farm map? 



5. What is the soiling system? 



6. What are soiling crops? 



7. What are some advantages of summer soiling for dairy cows? 



8. Why is there need for it in connection with the pasture system? 



9. Name some of the crops for spring and early summer soiling. 



10. Name some better suited to growth in hot summer. 



11. Mention three uses of oats-and-peas. 



12. At what stage should this crop be cut to cure for hay? 



13. When may soy beans and cow peas be sown? 



14. What are some reasons in their favor? 



15. Give a list of common plants belonging to the legume family. 



16. Give two characteristics of this family. 



17. How does the growth of legumes in a field aid the soil ? 



18. Why should a farmer use legumes in a rotation with other crops? 



19. What does the absence of nodules from the roots of clover tell 

 the farmer? 



20. Name four kinds of clover and give the length of life of each. 



21. What is the chief use of white clover? 



22. Which two clovers are most commonly cut for hay? 



23. Tell of the two varieties of red clover. 



24. What bees pollinate red clover? What bees pollinate alsike 

 clover? 



25. Of what special use is crimson clover? 



26. Which of the three methods described for starting red clover 

 is considered the best? 



