| Customization: | Available |
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| Condition: | New |
| Certification: | ISO |
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Humic acid is formed by microbial degradation of the dead biological substances.
Its specific properties and structure depending on a given sample source from water or soil to extract the specific conditions.
Products we have are humic acid powder, granular humic acid and humic acid crystal.
Humus in soils and sediments can be divided into three main parts: humic acid (HA), fulvic acid (FA) and humin (HM).
HA is soluble in alkali solution, but not soluble in water and acid, FA is soluble in alkali, soluble in water and acid; the HM is neither soluble in alkali, nor soluble in water and acids.
Leonardite potassium humate is a mixture of natural organic macromolecular compounds, which is widely present in nature. Because of its unique physiological functions, it has been widely used in agricultural production in recent years.
| Appearance | Black Powder / Granule / Crystal | Black Powder / Granule / Crystal |
| Product code | JFHA-HA-1-P/G/C | JFHA-HA-2-P/G/C |
| Organic Matter (dry basis) | 85.0% min | 80.0% min |
| Solubility | NO | NO |
| C.E.C | ≥200meq / 100g | ≥200meq / 100g |
| Humic Acid (dry basis) | 60.0% min | 50.0% min |
| Moisture | 25.0% max | 25.0% max |
| Particle size | 2-4mm / 2-6mm | 2-4mm / 2-6mm |
| Fineness | 80-100 mesh | 80-100 mesh |
| Granule Radial Load | 12N | 12N |
| pH | 4-6 | 4-6 |
Under drought conditions, the application of leonardite potassium humate can increase the proline content of plant leaves, promote the water-holding capacity of cells, and increase the activity of plant cell protective enzymes (Nitrate reductase, superoxide dismutase, peroxidase, etc.) and reduce the permeability of cell plasma membranes to comprehensively improve the drought resistance of crops.
Humic acid in leonardite potassium humate can indirectly improve the stress tolerance and resistance of plants by improving the physical and chemical properties of the soil.
In addition, humic acid can also improve its salt resistance by regulating the change of fructose concentration to alleviate the damage of the plasmolemma under salt stress.
Under low temperature stress, humic acid can enhance the activity of polyphenol oxidase by increasing the proline content and abscisic acid content of crops.
And it can weaken the reduction degree of transpiration rate, stomatal conductance and net photosynthetic rate of plants after low temperature stress to improve their cold resistance.
Humic acid also performs well under high temperature stress. The activities of crop superoxide dismutase, peroxidase, etc. are improved, which reduces the rate of superoxide anion production and the content of hydrogen peroxide, and enhances the heat resistance of crops.
Soluble Humic acid in leonardite potassium humate contains a variety of functional groups, which can fix heavy metals on the surface of soil particles through complexation, chelation, and reduction, thereby affecting their migration and reducing the water-soluble state of heavy metals and reducing their toxicity.
At the same time, humic acid can also alleviate the toxic effect of heavy metal cadmium on seedlings. The main mechanism is to inhibit its absorption of cadmium and promote its absorption and accumulation of nutrients such as copper, zinc, iron, and manganese.
Humic acid can promote growth by increasing the sugar content and chlorophyll content of leaves, which indirectly improves the disease resistance of crops.
At the same time, studies have shown that leonardite potassium humate can inhibit the germination of downy mildew sporangia. And compounding with other pesticides can significantly reduce the occurrence of downy mildew. At the same time, humic acids can also enhance the control effect on root knot nematodes.
Humic acid is widely used in pesticide additives due to its special structure and function, and it has also proved that humic acid has a good effect on plant disease resistance.
Our latest organic certificate is SRS,SRS Certification GmbH is a German certification body, whose managers have over 15 years of experience in agricultural research, teaching, organic & good agricultural practices and inspection & certification, in many countries around the globe. We believe in the idea of organic farming, sustainable production, supply chain integrity as means of protecting the environment, producing and supplying healthy food, and generating income for those engaged.
SRS is accredited against ISO/IEC 17065:2012 and currently offers certification according to the SRS Organic Standard, equivalent to Regulation (EC) No 834/2007 and Regulation (EC) No 899/2008; to NOP/USDA - the National Organic Program 7 CFR Part 205 of the United States Department of Agriculture; to Organic JAS (Japanese Agricultural Standard); and to GLOBALG.A.P. standards - in Europe, East and Central Africa and China. Further accreditations and areas of activity are in the pipeline. With representatives in many regions of the world, we also offer supplier audits and input verification.
The anti-flocculation ability of humic acid in liquid fertilizer (especially foliar fertilizer) is more important than the stability of the humic acid raw liquid. Even if the solid particles of the humic acid raw liquid are coarse, and there are some reversible aggregates, it can be quickly dispersed and dissolved after being diluted hundreds to thousands of times during use, and it is still a good liquid fertilizer.
On the contrary, no matter how well the humic acid raw liquid is dispersed, it will flocculate and precipitate when encountering a large amount of hard water. Which will clog the nozzle or drip irrigation hole and cause trouble for fertilization operation. Secondly, spraying the flocculated humic acid on the leaves of plants will not only affect the absorption of nutrients and humic acid by the crop leaves, but also may block the stomata of the leaves and affect the respiration of plants.
1) If there are more high-valent cations in the liquid fertilizer,humic acid itself may become insoluble humate or chelate,and will precipitate immediately even if diluted with soft water.
2) There are only monovalent salts in the liquid fertilizer. Even if most of the humic acid is condensed into insoluble aggregates, it can temporarily form a diffuse double layer after dilution with hard water, making the aggregates evenly dispersed. However, after a few minutes to a few hours, the humic acid anions gradually combine with Ca2+, Mg2+ and a small amount of Fe3+, Al3+ in the water to form insoluble salts or chelates and flocculate.
3) If the liquid fertilizer is diluted with high-hardness water from saline-alkali land. Due to the effect of high concentration of electrolyte ions (Na+, CO3 2-, SO4 2-, etc.) in the water, the double electric layer around the humic acid colloid particles is extremely thin and the electric potential is very low. so the product quickly flocculates and precipitates. Some people call this phenomenon "salting out".
1) Use lignite or peat to selectively oxidize and degrade humic acid as the matrix of liquid fertilizer. This kind of highly active humic acid (or humic acid) is not only a colloid protective agent and dispersant for the original solution, but also an effective anti-flocculating agent for the diluent. After being adsorbed by fertilizer particles, this type of humic acid can make the negative charge of the system absolutely dominant, thickening the double electric layer of the dilute colloidal system. Or humic acid forms water-soluble chelates with high-valent metal ions such as Ca2+ and Mg2+, thereby preventing or delaying the flocculation process.
2) Add chelating agents to liquid fertilizer. One type is high-efficiency organic chelating agents. Such as EDTA, which can form stable water-soluble chelated ions with a variety of metal ions. However, EDTA is expensive, and the amount added cannot be too little, which will significantly increase the cost of liquid fertilizer. There are also many cheaper organic chelating agents, such as tartaric acid, citric acid, salicylic acid, etc. [Chuan, which can be determined through experiments. The other type is inorganic chelating agents, mainly polyphosphates (ammonium salts or potassium salts).
3) Whether adding active humic acid or various organic and inorganic chelating agents, we must explore the rules and avoid blindness. First, we must ensure that the humic acid liquid fertilizer is a stable, homogeneous, and flowable colloidal system to prevent the formation of irreversible insoluble aggregates. This requires more experiments on technical conditions such as addition method, addition order, system pH value, and treatment temperature. Secondly, the amount of humic acid and chelating agent added must be basically calculated.
In addition, to meeting the chelation of metal ions in the liquid fertilizer and the colloid protection of dispersed particles, sufficient margin should be left to ensure the need to chelate cations in hard water after dilution by hundreds to thousands of times. Assuming that the solution is diluted 500 times with water of hardness 10mmol/L, the residual amount of chelating agent in 1ml of the original solution should be at least 5mmol.
JINGFENG HUMIC ACID COMPANY MAIN PRODUCTION
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