The chelation process in the soil e) There is still a lot about the chelation of micronutrients that is unknown. The organic molecule that forms the chelate may be derived from Natural chelates (1) Organic compounds released by the roots or soil mIcroorganIsm, such as Siderophores高铁载体and phytosiderophores植物高铁载体 (2)Compounds released during the decomposition of soil organic matter, such as fulvic acids (3)Man-made chelates: EDTA, DTPA EDDHA etce) There is still a lot about the chelation of micronutrients that is unknown. The organic molecule that forms the chelate may be derived from: Natural chelates (1) Organic compounds released by the roots or soil microorganism, such as Siderophores高铁载体 and phytosiderophores植物高铁载体 (2) Compounds released during the decomposition of soil organic matter ,such as fulvic acids (3) Man-made chelates: EDTA, DTPA EDDHA etc The chelation process in the soil