304 



ANNUAL REPORT OF THE 



Off. Doc. 



In order to illustrate the establiishment of a cropping system, an 

 80 acre farm is assumed of which 72 acres is available for crops or for 

 pasture. We will suppose that 72 acres can be divided into six fields 

 of 12 acres each for convenience of rotation. We will assume that the 

 yield of farm cro})s per acre is as follows: 



Yield of Farm Crops per Acre 



Corn, -. - — — 60 bu. 



Oats, _ — - - 40 bu. 



Wheat -- — 30 bu. 



Potatoes 180 bu. 



Soy beans, 20 bu. 



Clover or mixed hay, 2 tons. 



Soiling corn, 10 tons. 



Silage corn, 13 tons. 



Alfalfa (3 cuttings), 4 tons. 



Canada peas and oats, 2 tons. 



(hay) , 



Cowpea hay, IJ tons. 



Several rotations may be established on such a farm in order to 

 satisfy conditions, but some of them, however, will be of greater ad- 

 vantage in maintaining the fertility and keeping up the humus con- 

 tents of the soil. An outline of some of these rotations, with the ap- 

 proximate number of work stock, dairy cows and young stock, is as 

 follows: 



