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All The Nitrogen From Clover

Categories: MIXTURES FOR CROPS

The Pennsylvania station has shown in a

test of thirty years that when good clover is grown in a four-years'

rotation of corn, oats, wheat, and clover, the fertility of the

naturally good clay loam soil may be maintained, and even slightly

increased, without the use of any manure or purchased nitrogen.

Phosphoric acid and potash have been applied, and the clover hay crop

has been taken off the land. This result has been possible only by

means of good clover sods. If there had been no applications of

phosphoric acid and potash, the clover would have failed to maintain

fertility, as is proved by other plats in this experiment. No one

should continue to depend upon such a scheme of keeping land fertile

whenever he finds that the clover is not thriving.



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