330 GENERAL SCIENCE 



Exercises 



1. Name the chief wheat-growing states of this country. In what parts 

 of the United States is wheat not largely grown? What apparent reasons 

 for this difference in crop interests? Compare conditions for corn and 

 wheat raising as to (a) climate; (6) character of soil. 



2. Name in order of production the wheat-growing countries of the world. 



3. Why is it that wheat is not grown more extensively? What possible 

 substitutes are there for wheat in the feeding of people? 



4. What are the earliest records of wheat raising? When was wheat 

 introduced into this country? 



6. Name several kinds of breakfast foods wholly or largely made of wheat. 



FIG. no. Percentage of the wheat crop of the world (1915) grown in differ- 

 ent countries. (Robbins.) 



6. What period of time under favorable circumstances is required for the 

 germination of wheat? 



7. Upon what does the market price of wheat largely depend aside from the 

 cost of production? 



8. At what times in the year does the wheat crop require most labor? What 

 attention is given it at other times? How does the labor required com- 

 pare with that bestowed upon a corn crop ? What labor conditions neces- 

 sarily exist in wheat-growing sections? 



9. What variety of wheat is most largely grown in your section of country? 

 Name some other varieties. Give their respective merits, and any spe- 

 cial conditions necessary to their growth. What is meant by "hybridi- 

 zation" in plant growth? 



10. Describe in detail (a) the preparation of land for wheat raising; (b) the 

 methods of seeding; (c) any cultivation or other care of the crop till har- 

 vest; (d) the harvesting of the wheat. 



