WHEAT 157 



CHAPTER XIII 

 ROTATION OF CROPS 



Clover and alfalfa are grown successfully in 

 eastern Canada and in southern Manitoba and 

 Saskatchewan as are also the grasses western 

 rye grass, timothy and Bromus inermis. Alfalfa 

 may be grown successfully also, in western 

 Canada. 



Wheat has given nearly as high yields at the 

 southern Saskatchewan experimental farm when 

 grown after field peas or sand vetch as when 

 planted on summer fallow. Actual tests at the 

 experimental farm at Indian Head, Saskatchewan, 

 show that the soil which had been cropped twenty- 

 two years with grains had lost nearly one-third 

 of its total nitrogen, determined to a depth of 

 eight inches, compared with the adjacent virgin 

 prairie. Doubtless as the land becomes older 

 the legume crops will be used more extensively 

 in rotation with wheat, and the peas and vetch 

 may be plowed under for green manure with 

 good results if the plowing is not done too late. 

 It is not advisable to plow the ground when very 

 dry and cloddy. For some time, while the land is 

 new, the occasional bare summer fallow will 

 doubtless be the most practicable rotation and give 

 the best results. 



OTHER POINTS ON SEEDING SPRING WHEAT 



It is important to seed wheat as early in the 

 spring as the soil and season will permit, in order 

 to insure maturing before frost. This will not 



