Month: September 2019

Humic acid is a good adjustant for pesticides

The way people grow and manage is constantly changing with the advancement of science and technology. However, the status of soil as a carrier for growing crops has not been shaken. It shows how important the soil is to the growth of everything! Everything needs to grow well, and the fertility of the soil is One of the main determinants, the organic matter content in the soil determines the fertility of the soil.

Organic matter humic acid, organic matter is not equal to humic acid!

The humic acid foliar spray is a good auxiliaries for pesticides, mainly reflected in the following aspects:

(1) Humic acid is composed of complex organic matter, which contains more hydrophilic and lipophilic groups, has the function of surfactant, and is mixed with pesticides, which can effectively exert its good dispersion and emulsification. Improve pesticide activity and increase pesticide efficacy.

(2) Humic acid has a large specific surface area and has a strong adsorption effect on organic-inorganic substances. When it is compatible with pesticides, some complexes are formed, thereby releasing the effect of slow release of the drug.

(3) Because the amino acid and S-group in the functional group of humic acid can reduce the toxic effect of pesticides on humans and animals, the safety of pesticides after application can be improved to some extent.

(4) High-activity fulvic acid has solubilization and synergistic effect on pesticides, so that the amount of pesticides can be reduced to a certain extent, thereby correspondingly reducing the transfer of pesticides in the food chain and residues in the environment.

(5) Humic acid also contributes to the degradation of residual pesticides in the soil. Humic acid promotes the growth of microorganisms in the soil, while microorganisms can effectively degrade the residual pesticides in the soil, so it can effectively reduce the environmental pollution of residual pesticides after application. To reduce the penetration of pesticides into the food chain, thereby reducing the accumulation of pesticides in animals and plants.

In addition, humic substances and humic acid themselves have a pesticide-like function. Studies have shown that after spraying humic acid foliar fertilizer, the incidence of pepper bacterial wilt, the incidence of flower rust, and the rate of rotten fruit are significantly reduced.

Potassium Humate Application

Application of potassium humate in saline-alkali soil

Potassium Humate Application in China’s saline-alkali soil is mainly distributed in the northwest, north China, northeast and coastal areas, including salt soil and alkaline soil. The saline soil mainly contains a large amount of soluble salts, including sodium chloride and sodium sulfate, and the pH value is 8-9. Alkaline soil mainly contains sodium carbonate, sodium hydrogencarbonate, pH 9~10, and is strongly alkaline.

The main hazards of saline-alkali soil: the soil salt content is too high; the concentration of harmful ions (such as Na+, Cl-, HC03-, CO22-, Mg2+, etc.) is too large; the soil is too alkaline; the soil particles are highly dispersed, and the soil structure is poor; Crop growth and development is inhibited.
Long-term application of potassium humate can gradually change the physical and chemical properties of saline-alkali soil.

First, promote the formation of soil aggregate structure

The soil aggregate structure is the basic unit of soil structure. It is a large soil particle composed of organic and inorganic colloids such as soil humus and clay. Good agglomerate structure is not easy to disperse when it is in contact with water. It is not easily broken by mechanical pressure, loose and porous, and can regulate the water, fertilizer, gas and heat of the soil.

As an organic colloid, long-term application of potassium humate can promote the formation of soil aggregate structure, improve the soil structure, and make the soil a good aeration and water permeability. It has created favorable conditions for accelerating the elution of soluble salts and root growth. .

For example, after soda-salted paddy soil in Miquan County, Xinjiang, the content of water-stable aggregates in the soil greater than 0.25 mm was significantly higher than that in the soil without potassium phytate. Other properties such as soil air content, water permeation rate, and redox potential are improved.

Second, reduce the amount of salt in the topsoil

The concentrated application of potassium humate can loosen the soil of the ploughed soil, destroy the conditions of the salt along the pores of the soil capillary, increase the accumulation of salt in the topsoil, and reduce the salt content of the topsoil, which plays a role of “separation of salt”.

The spring wheat experiment in Zhangbei County of Hebei Province showed that in the concentrated ditch sulphate potassium (100 kg/mu), the total salt content in the topsoil of 0~125px was reduced by one-third compared with the non-application, and the ion concentration also decreased significantly.
Due to the “salting salt” effect of potassium humate, the damage of salt and alkali to crop seedlings can be alleviated, the emergence rate can be improved, and weak seedlings and dead seedlings can be reduced. Zhangbei County applied humic acid potassium to spring wheat. The basic seedlings were more than 54,000 per mu, and the emergence rate was 20% higher.

Third,Potassium Humate Application to improve soil exchange capacity

Potassium humate has a high cation exchange capacity, which is more than 10 times higher than that of ordinary soil. After being applied to the soil, the adsorption capacity of the soil for Ca2+, Mg2+ and other divalent cations is significantly improved. Under the condition of proper water leaching, the leaching rate of Na+, Cl-, etc. in the soil solution is accelerated accordingly. The surface salt content is gradually reduced, and the salt composition changes significantly.
The Xinjiang Institute of Biological Soil and Desert Research applied potassium humate for two consecutive years on soda-salted paddy soil. The surface CO-, HC03-, and Cl- contents decreased, and the degree of sodium alkalinity decreased.

Fourth,Potassium Humate Application to reduce the pH of salt reduction soil (pH value)

The pH value of saline-alkaline soil, especially alkaline soil, is too high (above 9.0), which directly harms the growth of crops and even causes crop death. In addition, the pH value is too high, which also affects the availability of nutrients such as phosphorus, iron, manganese, boron and zinc in the soil.

On the alkaline alkaline soil, the acid raw coal powder or potassium humate is applied, and the humic acid can neutralize the alkali to lower the soil pH. The experimental results show that the application rate of acid weathered coal powder is 10% of soil weight, which can reduce the soil pH from 9.0 to 8.0, and reduce or eliminate the soil alkalinity.

The application of humic acid can improve soil physical and chemical properties, inhibit salt rise, neutralize soil alkalinity, reduce salinity hazard by adsorption of cations, create good soil conditions for crop seedling growth, and improve low-yield saline-alkali soil.

Humic acid increases NPK utilization and increases plant nutrition

Humic acid increases NPK utilization and increases plant nutrition

Humic acid increases NPK utilization ,For nitrogen: Since humic acid has a salt exchange capacity many times higher than soil, it can adsorb a large amount of ammonium ions to reduce the loss; at the same time, humic acid has a good inhibitory effect on urease and nitrifying bacteria, and can greatly increase urea. Sustained release and use efficiency.

Humic acid increases NPK utilization ,Phosphorus: It can react with the fixed phosphate fertilizer in the soil to convert it into effective phosphorus; it has a protective effect on phosphorus, can improve the utilization rate of phosphate fertilizer in the current season; it can also improve the mobility of phosphorus, which is DAP/MAP, etc. Effective additives.

For potassium: It has a strong adsorption effect on K+, which can reduce the loss; it has a certain dissolution effect on potassium-containing minerals such as potassium silicate and potassium feldspar, thereby increasing the effective potassium content in the soil.

2, humic acid can improve soil aggregate structure, ph, modulating heat, microbial growth, pollution reduction – the environment

It can improve the structure of soil aggregates: the colloidal properties of humic acid have good adhesiveness, which is beneficial to the formation of more and better soil aggregate structure.

Adjusting the pH of the soil: Since humic acid is a multi-weak acid, it has a strong buffering property, so it can play a role in mediating the pH of the soil, and then convert nutrients and trace elements into a form that can be absorbed by plants.

Dimming heat: Since humic acid has a deep black color, it is equivalent to laying a black mulch on the soil after being applied to the soil, which improves the photothermal performance of the soil and is beneficial to increase the ground temperature.

Improve bacterial activity: In the soil of the compacted soil, humic acid can interact with beneficial bacteria in the soil to make the soil a soft structure and promote the absorption of water nutrients and oxygen by plants.

Reduce heavy metal pollution: In acidic soil environments, humic acid reacts with heavy metals to reduce heavy metal pollution.

fulvic acid

Fulvic acid effect in agriculture

Fulvic acid effect in agriculture ro improved soil

1. Improve soil aggregate structure.

The fulvic acid is a humic substance, which can affect the nature of the soil, and promote the formation of a more stable agglomerate structure in the soil, so that the content of granules ≥ 0.25 mm in the soil is increased by 10-20%, and the content of organic matter is increased by 10%, so that the soil can maintain moisture. Increase ventilation, which is conducive to the growth of crops.

2.Enhance the water retention of the soil.

Fulvic acid is a hydrophilic colloid with strong water absorption capacity. The maximum water absorption can exceed 500%. The weight of water absorbed from saturated atmosphere can be more than doubled, which is much larger than that of ordinary mineral colloid. The fulvic acid inhibits the transpiration of the crop, so that the soil water consumption rate is slowed down and the soil water content is correspondingly increa3.sed.

3.Enhance the fertility of the soil.

The fulvic acid itself is an organic acid, which increases the dissolution of the mineral part of the soil, provides soil nutrients, and increases the effectiveness of nutrients through complexation. As an organic colloid, fulvic acid has positive and negative charges, which can adsorb anion and cation, so that these nutrients can be stored in the soil, not lost with water, and improve the utilization rate of fertilizer, which is especially important in sandy land.

4.Adjust the pH of the soil solution.

The fulvic acid and the fulvic acid salt transform each other to form a buffer system, thereby regulating the pH of the soil solution.

4.Reduce soil salinity.

The colloidal structure formed by the complexation of fulvic acid and chelated metal cations in the soil and its porosity (larger specific surface) can adsorb ions or molecules in the soil solution and reduce the concentration of salt in the soil solution.

Biological action fulvic acid contains a variety of oxygen-containing functional groups, which determine its physiological activity, thereby regulating the life activities, promoting the growth and reproduction of beneficial bacteria, and inhibiting the number of harmful microorganisms; the carboxyl group and phenolic hydroxyl group in fulvic acid have certain Inhibit the role of the virus.

Fulvic acid effect in agriculture to Improve fertilizer utilization

The fulvic acid contains functional groups such as carboxyl group and phenolic hydroxyl group, which has strong complexation, chelation and surface adsorption ability, can reduce the loss of ammonium nitrogen, increase the moving distance of phosphorus in the soil, and inhibit the fixation of water-soluble phosphorus in the soil.

Ineffective phosphorus is converted into effective phosphorus, which promotes the absorption of phosphorus by roots; fulvic acid can absorb and store potassium ions, and the effective potassium content is especially effective for potassium fertilizer. Experiments show that fulvic acid can increase the utilization rate of nitrogen, phosphorus and potassium nutrients in fertilizers by more than 20%.

Slow release and synergistic pesticides

The fulvic acid has the function of a surfactant, which can lower the surface tension of water and emulsify and disperse the pesticide; fulvic acid as a colloidal substance with a large viscosity and surface area may have a strong physical absorption effect on the pesticide. The fulvic acid itself has antibacterial and anti-disease effects, and the compounding with the bactericide is equivalent to the compounding of the two pesticides.

Stimulating effects on plant growth

The fulvic acid is similar to the endogenous hormones of plants, and can promote seed germination, root growth, and early coloring of fruits. Specific manifestations: promote root growth and activity, similar to auxin effect; promote seed germination, emergence of seedlings and seedling growth, similar to the effect of gibberellin; make leaves enlarge, thicken, green, delayed senescence of lower leaves, similar The role of cytokinin; the reduction of stomatal, transpiration, similar to the role of abscisic acid; the fruit coloring, maturation, similar to ethylene ripening; promote cell division and cell elongation, differentiation, hetc., similar to two The role of the above plant hormones.

Fulvic acid effect in agriculture to Improve the quality of agricultural products

The fulvic acid enhances the synthesis of sugar, starch, protein, fat and various vitamins. It can stimulate the activity of polysaccharide enzyme, convert polysaccharide into soluble monosaccharide, thereby improve fruit sweetness; increase the ratio of total sugar to nicotine and potassium to chlorine in tobacco leaves, improve the quality of tobacco leaves; increase the total content of watermelon, cantaloupe and other fruits Sugar content and vitamin C content.

Enhance crop stress resistance

Plant stress resistance index (one): the content of ABA (abscisic acid: a plant hormone that inhibits growth) in plants. The ABA content of plants will increase under any adverse conditions. Abscisic acid is the “first messenger” that initiates the expression of stress-resistant genes in plants, and effectively activates the anti-reverse immune system in plants. Physiological mechanism of fulvic acid to improve plant stress resistance (common): fulvic acid can increase the content of ABA in plants.

Fulvic acid: As a plant growth regulator, it is the best component of soil humus, which not only reduces crop burden, increases soil fertility, enriches the matrix of soil bacteria, but also improves crop yield and quality. Agriculture achieves the long-term development goal of increasing production, upgrading and raising land. So as to solve the problem of the quality of crops, so it is a must for science and technology agriculture!