SOIL pH RECOMMENDED FOR VARIOUS CROPS ON VARIOUS SOILS
Mineral soils with subsoil pH Organic soils
Crop > pH 6 < ph 6
pH
Alfalfa 6.5 6.8 5.3
Other forage legumes 6.0 6.81 5.3
Corn 6.0 6.5 5.3
Soybeans 6.0 6.5 5.3
Small grains 6.0 6.5 5.3
Other crops 6.0 6.5 5.3
1 Birdsfoot trefoil should be limed to pH 6.0.

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Corn, Soybean, Wheat, and Alfalfa Field GuideBulletin 827