Guidelines for Crop Rotations Guidelines for Crop Rotations
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Follow a legume Follow a legume--sod crop with a high sod crop with a high--nitrogen nitrogen--demanding crop such as demanding crop such as
corn to take advantage of the nitrogen supply. corn to take advantage of the nitrogen supply.
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Grow less Grow less--nitrogen nitrogen--demanding crops such as oats, barley, or wheat in the demanding crops such as oats, barley, or wheat in the
second or third year after a legume sod. second or third year after a legume sod.
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Grow the same annual crop for onl y one year if possible to decre Grow the same annual crop for onl y one year if possible to decre ase the ase the
likelihood of insects, diseases , and nematodes becoming a proble likelihood of insects, diseases , and nematodes becoming a proble m.m.
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Don't follow one crop with anot her closely related species, sinc Don't follow one crop with anot her closely related species, sinc e insects, e insects,
disease, and nematode problems are frequently shared by members disease, and nematode problems are frequently shared by members of of
closely related crops. closely related crops.
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Use longer periods of perennial cr ops, such as legume sod, on sl Use longer periods of perennial cr ops, such as legume sod, on sl oping land oping land
and on highly erosive soils. and on highly erosive soils.
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Use crop rotations that promote healthier crops . Use crop rotations that promote healthier crops .
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Try to grow a deep Try to grow a deep--rooted crop, such as alfalfa, safflower, or sunflower as rooted crop, such as alfalfa, safflower, or sunflower as
part of the rotation. part of the rotation.
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Grow some crops that will leave a significant amount of residues Grow some crops that will leave a significant amount of residues , like , like
sorghum or corn harvested for grai n, to help maintain organic ma sorghum or corn harvested for grai n, to help maintain organic ma tter levels. tter levels.