Humic substances can be found in all soils and waters and arise from vegetable decomposition products. They are split up by extraction in hu- min, humic acid, fulvic acid and ulmic acid . Their salts are called humates, fulvates and ulmates. As main fraction humic acid forms the biological center of the humus.
The intensive monoculture and the intensified application of inorganic mineral fertilizers since beginning of the 20th century continuously decreased the rate of organic matter in soils so that agriculture reached a blind alley. Consequently of this many problems aroused, like the salinisation and calcination of soils, the decrease of the soil fertility, the destruction of useful soil micro organisms, the increase of the erosion and desertification, rising plant diseases and the accumu- lation of toxic residues in soils, e.g. herbicides. In combination with humic acid NPK fertilisers can work optimally. By addition of our products the efficiency of NPK fertilizers can be increased up to 30% respectively at the same yield the application of fertilisers can reduced, the environment preserved and costs saved.
Effect in soils
Compacted clay soils
Humic acid aerates compacted soils and im- proves their structure. Thus water, nutrients and roots can penetrate the soil more easily
Eroded soils
The addition of humic acid accumulates the organic matter in the topsoil. The erosion is effectively reduced by intensified root formation and stabilising clay-humus complexes
Light sandy soils
In sandy, poor in humus soils, humic acid coats the sand particles, increases the cation exchange capacity (CEC) and increases the ability of the soil to retain nutrients and water. Nutrients, in parti- cular nitrate, are not leached out to the groundwater but together with water retained in the soil, so that they remain avai- lable for the plants
Dry soils
Humic acid increases the ability of the soil to retain water. Thus water is available for the plants in dry periods too. That way drought caused stress situations to the plants are avoided and the wastage of precious water is reduced
Salinised Soils
Salts are split up by the high cation exchange capaci- ty (CEC) of Humic acid. Cations (e.g. Ca and Mg) are bound and chelated. The high osmotic pressure within the root area is reduced
Acidic soils
Due to its high buffer capacity humic acid neutralises acidic soils. Acid caused stress for the plant roots is reduced. Elements harmful for plants, especi- ally aluminium and heavy metals, are bound firmly and immobilized by humic acid. Thus their toxicity is reduced and phosphate bound by aluminium is released
Pesticide -, herbicide and fungi- cide-charged soils
Humic acid increases the effectiveness of pe- sticides, fungicides and herbicides and immo- bilizes their harmful residues.
Alkaline soils
As a result of the high pH value many essential nutrients and trace elements are not present in plant-available form. Humic acid buffers the high pH and converts nutrients and trace ele- ments into plant receptible form by complexion. Phosphate bound by calcium is resolubilised and made available
Humic Acid is offered in the following forms:
- Refined Potassium Humate
- Humic Gel
- Humic Liquid-12%
- Humic Granules (3%, 5%).
