EDTA Manganese (ethylenediaminetetraacetic acid-manganese) is a chelating agent that binds to metallic ions and forms a stable water-soluble complex. This complex is used to treat manganese toxicity in soil, water and agricultural products. EDTA Manganese can also be used to supplement manganese in plant nutrition and as a pH buffer in water and soil. Manganese is an essential nutrient for plants and animals, but it can be toxic at high concentrations. EDTA Manganese helps to prevent manganese toxicity by binding to and removing the excess manganese from the environment.