Promot Powder MZM. Biological soil additive contains beneficial soil fungi and 0.5% magnesium, 0.1% manganese, and 0.1% zinc (derived from magnesium sulfate, manganese sulfate, zinc sulfate and citric acid). Trichoderma koningii and Trichoderma harzianum promotes plant growth and increases vigor by increasing beneficial microbial activities in the rhizosphere. Provides resistance to fungal diseases by retarding growth of Rhizoctonia solani (damping off), Sclerotium rolfsii and Pythium sp. Now sold as a fertilizer in California. There has been no change in the formulation. Do not use with fungicides. Mix in potting soil, 1 lb/ 500 lb. soil or dip roots at the transplanting, use 1 oz. per gal. water. OMRI listed. 1 lb. Ship wt 2 #.