CORN IN THE ROTATION 



101 



they are so built up that difficulty is experienced in the 

 lodging of grain crops, the rotation may be made longer by 

 growing corn two years in succession. This would make the 

 rotation a four-year one, as follows: First year, grain; 

 second year, clover; third and fourth years, corn. Owing 

 to the strong feeding habits of the crop and to the rapid 

 decomposition of vegetable matter which takes place in corn 

 fields, two years of corn will usually reduce the available 



Fig. 34. Minnesota No. 13, a type of yellow dent corn adapted to the Northern 

 states, improved by the Minnesota Agricultural Experiment Station. 



plant food in the soil sufficiently to permit the growth of the 

 proper grain crop without danger from lodging. 



Corn may be used in innumerable combinations in rota- 

 tions, depending entirely upon the needs of the farm. A 

 four-year rotation adapted to a farm on which it is desired 

 to grow a comparatively large quantity of grain, might be as 

 follows: First year, grain; second year, clover; third year, 

 corn; fourth year, grain. If desirable, another grain crop 



