An Evaluation of Nitrogen Fertilization in Legume‐Grass and All‐Grass Pasture1

Synopsis A simple legume‐grass mixture was more productive than a grass + N mixture in 1958 but less productive in 1959, following legume depletion due to winter‐killing. A low rate of nitrogen applied to depleted legume‐grass swards was economically superior to high rates on either legume‐depleted or all‐grass pastures, but especially the latter. Results over the 5‐year period suggest the desirability of seeding simple legume‐grass mixtures with limited nitrogen amendments after legume depletion rather than seeding of either complex or all‐grass mixtures.