nc state - Fluid Fertilizer Foundation

NC STATE UNIVERSITY• A polymer with high CEC• Grabs hold of multi-valent cations(like Ni 5+ )• If the nickel ions are sequesteredthey are unavailable for urease!• NUTRISPHERE – N also ties up iron(Fe) and copper (Cu)• Cu and Fe are needed forconversion of ammonia to nitrateon the other side of the N-cycle