Zone Forge reads your Alabama soil test in Alabama's own calibrated language — the critical levels and rate logic come straight from Alabama — Auburn Nutrient Recommendations for Alabama Row Crops (May 2020), not a national average.
Published source: Alabama — Auburn Nutrient Recommendations for Alabama Row Crops (May 2020)
Alabama — Auburn Nutrient Recommendations for Alabama Row Crops (May 2020). Zone Forge cites the publication on every recommendation.
Yes — the Alabama soil-test recommendation calculator is free and needs no signup. Enter your lab values for source-cited P, K and lime guidance.
Zone Forge reads every Alabama soil test in its own state's language, then builds source-cited fertilizer and lime recommendations and full variable-rate prescriptions. See the science →