A reader e-mailed me with a question about humic acid. Since the quality of their lawn is not as good as they desire it to be, a lawn service has recommended an application of humic acid. They want to ...

THE stable humic acid of soil has an unknown chemical structure; it is considered to be a complex phenolic polymer formed from unknown biological precursors 1. This article presents the hypothesis ...

Researchers in China have discovered that a combination of bone biochar and humic acid can dramatically improve coastal saline soils and help olive trees thrive in these challenging environments. The ...