IMPROVING THE HAY CROP 21 
but slight expense for labor and seed it makes pos- 
sible a larger yield of forage in the same period 
and at the same time increases rather than reduces 
fertility. 
When oats is not a profitable grain crop, the 
rotation may be changed so as to have two crops 
of maize in succession, a method which has been 
practiced with great success, particularly in the 
eastern parts of New York and Pennsylvania, and 
in New Jersey, Delaware, Maryland and parts of 
Virginia. This system requires that crimson clover 
be seeded in the corn at the last cultivation, which 
will make a crop of hay by the middle or latter 
part of May, or in time to plant corn again, which 
crop may be removed in time to seed to wheat. 
After harvesting the wheat, the land may be disk- 
harrowed and seeded with cowpeas or soybeans, 
which may be made into hay, and the land then 
seeded to clover and timothy as in the first 
example. 
The value of the frequent introduction of cow- 
peas and soybeans, which not only keep the land 
occupied, but add to the forage capacity of the 
farm, can hardly be overestimated, as the land 
increases in productive value by the added crops 
of hay, and it is improved both because of the con- 
tinuous occupation with crops, and the added 
nitrogen derived from the air; all this aids in the 
growth of cereals, and results in a larger pro- 
