ALFALFA IN CROP ROTATION. 241 
sod, after the rotation is once under way. This corn 
ought to yield at least 85 bushels per acre, and may 
yield more than 100 bushels. One field will be on 
alfalfa sod simply, the other field will be corn stubble 
heavily manured. Thus there will be about 7,000 
bushels of corn, shelled measure. The next field will 
be a 40-acre field sown down to alfalfa with barley, 
either fall-sown alfalfa on barley stubble or spring- 
sown alfalfa with barley asa nurse crop. In the one 
case there will be about 1,000 bushels of barley grain, 
maybe more, and no hay from this 40. Then there 
will remain three fields of 40 acres each in estab- 
lished alfalfa, one of them sown last year, one the 
year before, one the year before that. These fields 
will yield about 4 tons of hay per acre, maybe more, 
or say 450 to 500 tons of hay. 
We thhave left about 60 acres for permanent pas- 
ture, orchard, barn lots, woodland and so on. Now 
let us sum up what we have as a yield from the 
300 acre farm: corn, 7,000 bushels; barley, 1,000 
bushels, or else, barley hay, with some alfalfa in it, 
50 to 75 tons; alfalfa hay, 450 to 500 tons. Pasture 
left 60 acres, which will keep the work teams, cows 
and pigs during summer and give a good place for 
animals to run and exercise in cold weather when 
it will not do to let them step on the alfalfa field. 
As working horses need little or no grain in winter 
when they have good alfalfa hay it seems clear that 
the 7,000 bushels of corn will about balance the 450 
tons of hay. If there is need of more corn to feed 
out the pigs it can be bought. If cattle or sheep are 
