4% Mn, 3% Fe, 1% Mg. with complexed organic acids. Hydra-Mn is specifically designed to provide the right nutrients to deliver elevated tissue color. The combination of Mn, Fe and Mg in the organic acid chelated form catalyzes the reactors inside the plant to produce unrivaled color response, regardless of soil conditions such as pH. Flexible for foliar and soil applications. Compatible with amine-based herbicides and offers low stain risk.