Chelate Posted on September 13, 2016November 10, 2022 by PlumeriaDB ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ Share This Tweet Share A complex organic substance that holds micronutrients, usually iron, in a form available for absorption by plants. Related Images:Related Articles: MicronutrientsMicro-organisms in the growing mediumSoils and Growing MediumsAbout Nutrients