THE TILLAGE OF SOILS 43 



QUESTIONS 



1. Give six reasons for tilling the soil. 



2. Define the terms texture and structure as applied to soils. 



3. What effect does freezing have upon the structure of 

 soils ? 



4. Name two soil structures. 



5. Name two ways of bringing about the crumb structure. 



6. Name four causes of a puddled condition of the soil. 



7. How can you draw tall weeds or other plants under when 

 you plow? 



8. What is the best implement to use to destroy weeds that 

 are just sprouting? To destroy weeds an inch or two high? 

 To destroy tall weeds? 



9. What is the use of a dust mulch, and how is it maintained ? 

 10. How does cultivation help air and water to enter the soil ? 



