Somewhere between 300 and 60 million years ago, the forests that covered what is now central Asia and parts of Eastern Europe began to die, layer by layer, and compress under the weight of successive geological ages. Over millions of years, those forests became coal. But at certain depths, in certain geological formations, the process stopped partway — not quite coal, not quite ordinary organic matter. The result is called leonardite, and it is the source of the most complex and potent soil amendment in agricultural science: humic acid.
To understand humic acid is to understand something fundamental about how soil works — and why modern, input-intensive agriculture has systematically destroyed the very thing that made agriculture possible in the first place.
Healthy, undisturbed agricultural soils that have been farmed sustainably for centuries have humus contents of 4–8% or more. Humus — the complex, stable organic fraction of soil — is what gives good soil its dark colour, its structure, its ability to hold water and nutrients, and its biological vitality. It is the accumulated legacy of millennia of organic matter decomposition.
Modern agricultural practices — tilling, synthetic fertilisers, pesticides, monocultures — deplete humus rapidly. Many intensively farmed Indian soils now have humus contents below 0.5%. This is the root cause of the progressive yield declines and increasing fertiliser dependency that characterise industrial agriculture. The soil has been emptied of the very chemistry that made it fertile.
Humic acid is the active component of humus. Applied to depleted soils, it begins to restore what has been lost. It improves the soil's cation exchange capacity — its ability to hold mineral ions against leaching and make them available to roots. It chelates micronutrients like iron, zinc, and manganese that are often present in soil but locked in unavailable chemical forms. It stimulates the growth of beneficial soil microorganisms. And it gradually improves soil structure — aggregating particles in ways that improve both drainage and water retention simultaneously.
None of this is fast. Humic acid does not produce the dramatic short-term results of synthetic fertilisers. What it produces is a progressive improvement in soil health over time — a trajectory towards the kind of soil that grows plants naturally, without increasing external inputs.
At Prahas, we think of humic acid as the chemistry that makes the rest of the system work better. Vermicompost provides biology and nutrition. Cocopeat provides structure. Neem provides protection. Seaweed activates growth. Humic acid is the amplifier — it improves the soil environment in which all these other inputs operate, increasing their effectiveness and extending their impact.
Mohit was drawn to humic acid because of its deep time — the idea that something created hundreds of millions of years ago could still be actively improving the soil we grow food in today. That the past and the present are not separate. That what came before still feeds what comes after.
That is the principle at the centre of Prahas. And it is why every bag of Prahas Humic Acid contains leonardite sourced from responsibly managed geological deposits — processed cold, without chemical treatment, to preserve the full spectrum of humic and fulvic fractions that make it effective.