Tag Archive : Humic acid

Humic Acid Powder

Leonardite and Humic Acid

Leonardite

It is theorized that Leonardite shale originated from trees and other vegetation, which grew during the carboniferous period when most of North America was a tropical type forest. Over the ages, the vegetation underwent compaction and heating, slowly carbonizing and forming coal. Through this compaction, organic acids and esters present in the vegetation were squeezed out, forming a pool on top of the lignite bed. This pool dried, aged, and eventually formed Leonardite shale. The vegetative origin of the Leonardite shale indicates this material is humus and contains Humic Acids. The content of Humic Acids within the Leonardite shale is variable with the location of deposits found throughout the world. Those deposits in the North Dakota area are among the most pure in the world containing 80 to 90 percent Humic Acids. Any one of the other sources of Humic Acids, including pear, muck, green, or animal manures, can be beneficial to plant growth when incorporated into the soil. Leonardite shale is an easily available and concentrated form of Humic Acids, making it the subject of much research work and commercial use.

Humic Acid

Humic acid is made up of three different compounds, organic matter, humus, and humic substances. Organic matter is the plant and animal residue in the soil at various stages of decomposition. Humus is the end product of microbial degradation. Humic substances are naturally occurring organic materials with high molecular weights that are not easily degraded. The importance of humus, humic acids, and humates has long been recognized, but neither fully understood nor appreciated.

Soil organic matter is plant and animal residues in the soil at various stages of decomposition. Tissue is both the primary source of food for soil microorganisms during decomposition, and the primary source of soil organic matter. When plant tissue is added to the soil three basic actions take place. First, the bulk of the material is converted to carbon dioxide, water, and energy through enzymatic oxidation. Second, elements such as nitrogen, phosphorous and sulfur are either released or immobilized in separate reactions. Third, microbial resistive compounds are formed through modification of compounds in the original plant tissue, or by microbial synthesis. During the enzymatic changes of soil organic matter, simple products, such as carbon dioxide and water, appear immediately. Other products, such as nitrate nitrogen, appear only after the initial peak of vigorous activity has subsided.

Humic Acid Powder

Humic Acids Function

Largely promote the buffering power and fertility of soil by improving the structure.
In sandy soil, humic acid will help to increase fertility of soil through its cation exchange capacity to retain water and beneficial micro nutrient .In heavy and compact soil ,Humic acid will work with fungi to construct a crumb structure root to absorb water oxygen and nutrient also improve root penetration.

Neutralize both acidic and alkaline soil to release the beneficial metal ions, thus promote absorption by plants.In alkaline soil, beneficial ion and other trace elements can not be absorbed by plants,humic acid can buffer the pH and convert the nutrients and trace elements into absorbable form and promote their uptake by the roots.
In acidic soil, humic acid will largely reduce the toxins such as the ally aluminum and heavy metals, which will be bonded firmly and immobilized ,thus their toxicity is reduced and phosphate is bonded by aluminum is released.
In salinalised soil, Salts are split up by the high cation exchange capability, cation (eg.Ca, Mg) are bonded and chelated.

Largely optimized the absorption of beneficial ion by plants thus increase plants growth accordingly increase the yield and fruits quality .
Humic acid stimulates the membrane of seeds to form a strong roots, which is decisive to increase the capacity of root to take up both micro and macro nutrients. Based on improved structure by humic acid N is largely stored and slow released, P is release from AL +in soil,also other microelement is in the form of easy-available by plants, meanwhile the beneficial fungi is active to produce different kind enzymes. with the above joint effort, the yield will be increased at lease 30%. Enhanced cell assimilation as well as photosynthesis increase the plant’s sugar and vitamin content, thus the quality of their seeds will be largely increased.

Enhance plants’ ability to counter stressed conditions.
Humic acid can mobilize K absorption to regulate the stomata open and close on the leaves also promote metabolism, thus increase the plants’ ability under stressed conditions.

Natural nitrogen stabilizer.in Soil if these sufficient humic substance there will be at least 35% of soluble nitrogen applied and held in the soil in the form of organic ,then convert into stable form ,finally bioavailable form.

Strong ability to release the lock up Phosphorus in soil,as humic substance has stronger CEC that will greatly chelate the cation from phosphate and release anion phosphate radicals.

Humic Acid Powder

Humic acid and its origin

Humic acid and its origin

Organic matter ,humic substance,humic acid ,humate and fulvic acid are closely related,all are come from the natural process of decaying plants and animals body.Organic matter is defined that all the organic substance in the soil with Hydrocarbonated base(containing hydrogen, carbon and oxygen).Humic substance is pure substance from process of humification with stronger Cation Exchange Capacity than clay.Humic acids is the fraction of humic substance that is not soluble in acidic condition and soluble in higher PH solution with high molecular weight.Humate is humic acid salt is completely soluble in water extracted from humic acid after treating with high PH alkaline agentlike NAOH,KOH.Fulvic acid is defined as lower molecular weight soluble in both acidic and alkaline condition.

All of them are soil food and storage of mineral and water.For example,most dark color soil is much more fertile than light color soil,like most northeast part of China,they have a lot of dark color soil and most local peasant call it black soil.As black soil are from decaying plants mostly is humic substance has strong cation exchange capacity,easy to hold minerals and water.

Humic acid and its source

Mostly the raw material of humic acid is leonardite and oxidized lignite.Also in some place like Russian is extracted from peat.


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