EDDHA Fe6 is highly active chelated iron elements. It is a dark brown or black powder. It is water soluble, which can be quickly absorbed. And is the most effective product to cure the plants of chorosis of iron. It can be applied in any soil with pH value 4.5-9.0. The crop absorption rate of EDDHA Fe6 is pretty higher than traditional iron chelated fertilizers like EDTA-Fe, FeSO4, especially in alkaline soil. .