LiveSeeding project (Horizon Innovation Actions 2022-2026)
This practice abstract describes a simple, non-destructive method to evaluate seed moisture by measuring equilibrium relative humidity (eRH) with a hygrometer. Seeds are placed in an airtight container with a hygrometer until the air reaches a stable relative humidity that reflects the moisture level of the non-oil fraction of seeds. An eRH of about 30% is recommended for optimal seed conservation; values above 35% indicate further drying is needed. The method is faster and non-destructive compared with oven-drying to measure moisture content and is independent of seed oil content. Practical protocol steps, notes on hygrometer accuracy (±2%), temperature dependence, and sampling considerations are provided. Additional tools and background are referenced, including a LiveSeeding Practical Guide, the Seed Information Database (SID) calculator, and a Drying Beads supplier tool. Contact and project information are included for further guidance.
Key topics: seed moisture, equilibrium relative humidity, seed storage, hygrometer, seed drying, on-farm seed conservation, LiveSeeding
