280 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



especially to dairy farms on which the pasture is provided out- 

 side of the regular rotations. 



"There is always a way of planning a single complex rotation 

 which has the same elasticity as the two-rotation systems before 

 outlined and which is even better than the two-rotation system on 

 most farms. The two systems given before may be arranged as 

 follows : 



COMBINATION OF THE FOREGOING TWO-ROTATION SYSTEMS INTO 

 SINGLE COMPLEX ROTATIONS 



First system Second system 



f 35 acres in corn for f 2O acres in corn 



Firstyear "1 5 Eo^r and Firstyear 



f 25 acres in oats for f 



Second year \ acres in peas and Second ear <j ? acres Tn Timothy 

 i sacresindmoVand and clover for hay 



L clover for hay [ 



Third year. . 40 acres in timothy and Third year. .35 acres in timothy and 

 clover for hay clover for hay 



"The first of these complex rotations gives the same acreage 

 of each crop as the first set of two rotations previously given, 

 and the second the same as the second set of two rotations. 

 While these last two rotations are technically called complex 

 rotations, they form systems which are really simpler than the 

 two-rotation scheme, and we generally use rotations of this type 

 in planning cropping systems for dairy farms. 



"This type of rotation is exceedingly elastic. It not only per- 

 mits each crop to be grown in exactly the proportion needed, but 

 it can be varied in many ways by substituting other crops for 

 those shown in the outlines above. For instance, in the first of 

 these complex rotations, instead of plowing up the whole 40 acres 

 of timothy and clover, we may leave 5 acres to take the place 

 of the peas and oats in the first year. This 5 acres may remain 

 down indefinitely, as long as the yield is satisfactory, and when 

 necessary it may be plowed up and sown to peas and oats, to be 

 followed by timothy and clover again without losing a crop of 

 hay. 



