In the soil, humic and fulvic acids are important chelators, combining minerals into organic compounds that are more available to plants. … They are often applied with microbial inoculants and liquid organic fertilizers. The quality of humic acid products varies widely. Post navigation Previous PostPrevious What is Humic Acid ?Next PostNext Humic Acid nature Comment on this FAQ Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.