Stoller’s SP Zinc EDTA Chelate is a micronutrient applied to foliar or soil. It is completely available and absorbed the leaf surface or root system. SP Zinc EDTA is readily compatible with most products and can be used in replacement of Phenolic Chelate. It can be mixed with Roundup and most APP mixes. Stoller’s unique chelating technology enhances nutrient uptake, with a lower pH. The proven efficiency of Stoller’s own phenolic acid chelate ensures efficient absorption by plant roots, leaves and tissue and full solubility (with wide compatibility) in the mixing tank. Always check compatibility using a jar test prior to use.