N. An additional consideration is in order for those who follow wheat with corn in a rotation. After wheat harvest, chisel-plowing the substantial biomass accumulation of red clover has been shown to increase yield of a following corn crop. Soil test levels early in the growing season indicated higher levels of mineralized N in the plots that had chisel-plowed red clover residue. Summary With the use of a good legume such as Michigan mammoth red clover, a vigorous alfalfa variety, or Michigan medium red clover, good biomass production can be obtained at N rates used by the top wheat producers. You should be aware that higher N rates will tend to affect both the stand of legume as well as the biomass produced for plow-down.
Many producers have over the years become familiar with frost-seeding legumes into wheat.
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