forage

Alfalfa Calculators

A perennial legume forage crop prized for high-protein hay and nitrogen fixation. Use the free tools below to plan fertilizer rates, seeding rates, planting dates, yield estimates, and costs for your alfalfa operation.

4 free calculators for alfalfa across 4 categories

Fertilizer & Soil

Alfalfa Fertilizer Calculator

Calculate exact NPK fertilizer rates for alfalfa. Get nitrogen, phosphorus, and potassium recommendations based on yield goals and soil test results.

Seed & Planting

Alfalfa Seeding Rate Calculator

Calculate seeding rate and seed needs for alfalfa. Get population, spacing, and seed quantity recommendations.

Planting Date

Alfalfa Planting Date Calculator

Calculate the optimal planting dates for alfalfa based on your USDA zone, last frost date, and preferred start method.

Crop Yield & Harvest

Alfalfa Yield Calculator

Calculate alfalfa yield per acre. Estimate total harvest, yield potential, and compare to averages.

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