Quelafert Humic Gold expertagro2022-02-10T08:49:24+00:00 ProductsIngredientsHow to useQuelafert Humic GoldHumic Extract – 72%Humic Acids – 56%Fulvic Acids – 16%Potassium Oxide (K2O) – 8%Organic Carbon – 40%2-5 kg / ha