Legume Seed Nutrient Management
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Little, if any, fertilizer nitrogen is needed by legume seed crops. Measure soil pH, phosphorus, potassium, and boron with a soil test to determine need. Red Clover requires a soil pH above 6.0. Annually apply sulfur before mid-March with other nutrients, if they are needed.
Click on the following links to view related OSU Extension Publications:
Fertilizer Guide: Red Clover, Western Oregon
Soil Acidity in Oregon: Understanding and Using Concepts for Crop Production | OSU Extension Service
Applying Lime to Raise Soil pH for Crop Production (Western Oregon) | OSU Extension Service
Soil Test Interpretation Guide | OSU Extension Service
Soil Testing Lab Selection and Recommended Analytical Methods for Oregon
Monitoring soil nutrients using a management unit approach | OSU Extension Service