Fertilizers
Categories:
THE COWPEA
The light soils of Maryland, New Jersey, and the southern
states are not naturally rich in phosphoric acid or potash. The cowpea
can draw its nitrogen from the air, but on all thin land it pays to use
200 to 300 pounds of acid phosphate and 50 pounds of muriate of potash
per acre for this crop which should have a luxuriant growth for the
soil's benefit. Such use of fertilizers is more profitable than their
use on the crop which follows.