180 



ELEMENTS OF AGRICULTURE 



or macaroni wheat is the hardest of all. It is exported 

 for the manufacture of macaroni and is coming to be used 

 for flour. 



The introduction of the Turkish varieties has made 



the production of wheat profitable in Kansas, Nebraska 



and other states where the soft winter varieties are not 



successful. Durum wheats will grow with even less rain- 



-a fall. The recent intro- 



^5?^ ^y_ A duction of this type has 



added thousands of 

 acres of semi-arid land 



FIG. 87. A planker, for crushing clods t() the wheat area 



168. Culture. Wheat lends itself to machine-farming 

 better than most crops. Nearly all the "bonanza" farms 

 with their large machinery are wheat farms. Still, a large 

 part of the world's wheat crop is cut with a hand 



sickle. 



Wheat is better adapted to short seasons than is corn, 



hence it grows farther north. It completes its growth 

 before the severest sum- 

 mer droughts occur, hence 

 it can grow in regions too 

 dry for corn. 



Some of the best wheat 

 soils are clay loams and 

 clays soils that are not 



best for COrn. In regions FIG. 88. A spring-tooth harrow. Particu- 



where the climate is suit- larly useful on stony land 



able for corn, the loamy soils are devoted to corn, not 

 because they will not raise wheat but because corn pays 

 better. 



