170 TILTH AND TILLAGE 



8. Name the parts of a common walking plow. What is a jointer? Coulter? 



Illustrate by sketch the proper adjustments of jointers and coulters 

 (Fig. 74.) 



9. Describe the pulverizing action of the moldboard; illustrate by diagram 



or otherwise. 



10. How does stubble plowing differ from sod plowing? 



11. What constitutes good plowing? (Figs. 68, 71, 76, 78, and 87). 



12. What is a disk plow and when is it used? Why are they not recommended 



for light, loose soils? 



13. Name some of the advantages of late fall plowing. Disadvantages. Whv 



leave fall plowed land rough? 



14. What is a puddled soil? 



15. Discuss spring plowing advantages and disadvantages. 



16. Why and when is deep plowing generally best? When is shallow plow- 



ing best? 



17. Why is it not good practice always to plow at the same depth? What is 



a better way? 



18. What is subsoiling? Is it generally recommended? Why? What about 



deep tilling? 



19. How may dynamite be used in connection with tillage? 



20. What is a hillside plow and how used? What are gang plows 



their advantages? 



21. What are harrows? Name and describe the use of the different typss. 



22. What is meant by summer fallowing? 



23. What is a planker and for what is it used? 



24. Name and describe the common rollers or clod crushers. When should 



they be used? When not? What is a precaution to observe in the use 

 of a smooth or drum roller? 



25. Why are light, loose soils especially benefited by cultipackers? 



26. What are the advantages of good tilth or a firm seed bed in relation to 



planted seeds and growing plants? Discuss another advantage in having 

 a firm seed bed. 



27. What has been the effect of the principle of good contact between the 



seed and the soil on the construction of many planting and seed- 

 ing machines? 



28. What is a good program to follow when alfalfa is to be sown broadcast 



on loose, loamy land? 



29. Which is better to use for sowing grain drills or broadcast sowers? Do 



all drills give the same satisfaction? Explain. 



30. Under what conditions is disking better than plowing for grain, particu- 



larly oats? Why? 



31. What is listing? Where and how is it done? What is a "middle-buster"? 



32. Give the meaning of cultivation. What are cultivators? 



33. Name and discuss the objects of intertillage. 



34. Name and discuss the use of the different implements used in intertillage. 



35. What should guide the farmer as to what particular tool to use, and how 



and when to cultivate? 



36. What is the depth of cultivation best for humid farming? Why? 



37. How is a farmer to know when he is cultivating too deep? 



38. Wliat machine adjustments may be made to eliminate injury in cultivation? 



39. Discuss level cultivation and hilling. 



40. What are weeders, and when do they prove effective tools? 



41. Does it injure grain or corn if it is necessary to roll land when the plants 



are small? 



42. How may crusts be broken after crops are planted? 



43. Have you ever known of cases of harrowing small grain while young? 



What were the results? 



44. For an outline summary of this chapter, see table of contents. 



