Leonardite extract, humic and fulvic acids used to improve soil structure, retain nutrients, and promote a healthy microbiota.

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Photo credit: © roberto hunger / Alamy / Afripics
License: Royalty Free
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Keywords: acids, agriculture, ash, chemical, clay, copy, extract, fulvic, healthy, humic, industrial, isolated, leonardite, macro, microbiota, mineral, nutrient, retention, soil, space, wet