Zone Forge reads your Alaska soil test in Alaska's own calibrated language — the critical levels and rate logic come straight from Alaska — UAF Cooperative Extension Service, not a national average. Lime has its own live calculator for Alaska with method-specific lab inputs.
Per Alaska — UAF Cooperative Extension Service — below the critical level, a yield response to the added nutrient is expected.
Alaska — UAF Cooperative Extension Service rates these crops in Alaska:
Published source: Alaska — UAF Cooperative Extension Service
Alaska — UAF Cooperative Extension Service. Zone Forge cites the publication on every recommendation.
Yes — the Alaska soil-test recommendation calculator is free and needs no signup. Enter your lab values for source-cited P and K; Alaska's live lime calculator is available separately with its own required lab inputs.
Yes — the free soil-test calculator covers source-cited P and K. Alaska also has a live lime calculator on Zone Forge that uses the state's published method. Open the Alaska lime guide or lime calculator for tons of CaCO3-equivalent per acre.
Zone Forge reads every Alaska soil test in its own state's language, then builds source-cited fertilizer and a live lime calculator and full variable-rate prescriptions. See the science →