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From Humus to Leonardite

Ignacio del Rey
Ignacio del Rey
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Índice de contenidos: From Humus to Leonardite

We know humus and its characteristics as organic matter but Leonardite is a form of organic matter that is more mineralized and much more unknown to everyone.

The natural humus of our sports surfaces is formed in a short time, mainly in the first 2 cm, and is composed of phenols, lignin, lipids, sugars and other organic acids.

Essentially biodegraded remains of the microbiological activity of our greens, tees, fairways or soccer fields is what forms humus. These substances are produced in relatively short periods of time as opposed to much richer and more concentrated substances produced over millions of years at high temperatures and pressure.

Ariño Valley Mine (Teruel)

Products such as leonardite, whose deposits are found in Spain in the Ariño Valley mines (Teruel) are a good example of how geological processes exponentially enhance the qualities of mineralized organic remains. The leonardite extracted from these mines presents a unique richness. It is a form of coal that has not finished the formation process. The vegetation that existed hundreds of millions of years ago has been mineralized to obtain a very interesting product at an agronomic level.

Floor profiles

Dr. A.G. Leonard in North Dakota first studied the characteristics of the material.

Leonardite has very concentrated humic substances and can be applied directly to the soil as an ecological amendment that will increase the Cation Exchange Capacity of the soil. Its impact is very positive:

  • Improves soil structure by generating sponginess. Particularly indicated for the most clayey areas.
  • Collaborates in the improvement of soil infiltration capacity.
  • Prebiotic for the development of microorganisms.
  • High cation exchange capacity (C.I.C.)

A soil with a higher cation exchange capacity allows for better utilization of nutrient applications by decreasing nutrient leaching. This is particularly problematic in natural turf field soils that are often built on very sandy surfaces with poor water and nutrient retention.

Its appearance is that of a dark solid that can be granular or liquid.

Humic acids in the agronomic context are understood as humic and fulvic acids. Fulvic acids are soluble over the whole pH range while humic acids are only soluble at basic pH. Humic acids act quite persistently improving C.I.C. and water retention, while fulvic acids have a faster action on the plant through root growth.

If you want to know more about these products or purchase top quality Leonardite for your field, please contact Tiloom at www.tiloom.com and we will offer you the solution that your field needs.

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