Plant lignins and soil humic colloids were isolated using H₂SO₄, NaOH and 1,4-dioxane and their elemental composition, methoxyl contents and cation exchange capacities were determined. The isolated ...

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 ...

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 ...

Humic acid (HA) and fulvic acid (FA) extracted from fourteen surface soil samples (0-20 cms) belonging to nine major Soil Association Groups scattered over different agro-climatic situations, were ...

Humic acid could become a cornerstone of green farming strategies, offering farmers a natural, effective means of controlling soil-borne fungal diseases. Beyond its fungicidal properties, humic acid ...

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 ...

COIMBATORE: Farmers have urged the Union government to provide humic acid as an alternative to compost manure for agricultural purposes as there is a shortage and unavailability of compost manure when ...