Humic Acid

63 humic acid products are offered for sale by suppliers on Alibaba.com, of which organic fertilizer accounts for 92%, biological fertilizer accounts for 3%, and other fertilizers accounts for 1%. A wide variety of humic acid options are available to you, such as controlled, slow.You can also choose from black, brown and yellow humic acid,as well as from no humic acid and whether humic acid is crops, agriculture fertilizer, or agriculture.