Zone Forge reads your Louisiana soil test in Louisiana's own calibrated language — the critical levels and rate logic come straight from LSU AgCenter Soil Testing & Plant Analysis Lab — combined lime + N/P/K/S nutrient source, not a national average.
Published source: LSU AgCenter Soil Testing & Plant Analysis Lab — combined lime + N/P/K/S nutrient source
LSU AgCenter Soil Testing & Plant Analysis Lab — combined lime + N/P/K/S nutrient source. Zone Forge cites the publication on every recommendation.
Yes — the Louisiana 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 Louisiana soil test in its own state's language, then builds source-cited fertilizer and lime recommendations and full variable-rate prescriptions. See the science →