QUESTIONS 131 



breaking the land immediately after wheat harvest with a lister, or 

 double mould-board plow, in furrows three to four feet apart. When 

 weeds have started, the soil is worked into the furrows with a corn 

 cultivator, or only harrowed. The land may be leveled with one 

 cultivation and harrowing, but it is better to level in two cultivations, 

 and one, two, or more harrowings with the disk harrow and peg- 

 tooth harrow. Advantages claimed for this method are : (1) That 

 the land can be quickly and cheaply broken after harvest, thus con- 

 serving moisture. (2) That rainfall is more effectively taken up 

 and conserved. The rain, collecting in the furrows, reaches the sub- 

 soil at once, and if loose soil is filled in soon after, the water is well 

 protected by the loose mulch. (3) The method is low in cost as 

 compared with other methods that fit the soil as well and conserve the 

 moisture. 



QUESTIONS 



1. What is a good way to find out practical methods of wheat culture? 



2. Compare wheat and* corn as to manurial requirements; preparation of 



the soil. 



3. Explain importance of early plowing for fall wheat; of a compact seed- 



bed. 



4. Compare deep and shallow plowing. 



5. Why are cultural rules uncertain ? 



6. Give apparent reasons for fertilizing wheat before other farm crops. 



7. What are the most important mineral elements in the grain of wheat? 



Straw ? 



8. Is silica important? 



9. Which element is most important in wheat fertilizers? 



10. Explain the assimilation of minerals and carbon in different periods 



of growth. 



11. Give principles governing time of growing winter wheat. Spring wheat. 



12. Explain relation of rate of sowing to tillering; yield. 



13. What is the usual rate of sowing in your neighborhood? 



14. State the advantages of drilling over broadcasting. 



15. To what is winter-killing due? 



16. How serious is it in winter wheat culture? 



17. Why is wheat fairly constant in character? 



18. When may we expect fanning seed wheat to be good practice? 



19. Is changing seed good practice? 



20. Compare harrowing and rolling as treatments for growing wheat. 



21. Is pasturing fall wheat practical? 



22. Compare the advantages and disadvantages of summer fallow for 



wheat. 



23. Describe the listing method. 



24. Where is it practised? 



