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Humic acid manufacturers remind users of precautions when applying humic acid fertilizers.

Release Date:

2019-07-30

Humic acid fertilizers consist of three components: fulvic acid, humic acid, and humin. Fulvic acid, also known as fulvic acid, is highly acidic and can leach minerals, making otherwise poorly soluble soil nutrients—such as phosphorus, potassium, iron, calcium, magnesium, and manganese—readily available for plant uptake. It helps transform the soil’s single‑grain structure into a more complex aggregate, turning soil particles into tiny reservoirs that retain water and nutrients, thereby enhancing the soil’s water‑ and nutrient‑holding capacity, increasing pore space, and boosting its air content. Precautions for Using Humic Acid Fertilizers: Apply according to actual field conditions. Avoid application in soils with high sulfur content or in paddy fields.

    Humic acid fertilizer It consists of three substances: fulvic acid, humic acid, and humin. Fulvic acid, also known as fulvic acid, is highly acidic and can leach minerals, making otherwise poorly soluble soil nutrients—such as phosphorus, potassium, iron, calcium, magnesium, and manganese—readily available for plant uptake. It helps transform the soil’s single‑grain structure into a more complex aggregate, turning soil particles into tiny reservoirs that retain water and nutrients, thereby enhancing the soil’s water‑ and nutrient‑holding capacity, increasing porosity, and boosting its air content.
 
    Humic acid Precautions for Fertilizer Use
 
Apply according to actual field conditions. Bio‑fertilizers should not be applied to soils with high sulfur content or to paddy fields.
 
Apply according to temperature and humidity conditions. The optimal application temperature for microbial fertilizers is 25°C to 37°C; below 5°C or above 45°C, the efficacy is significantly reduced. Additionally, maintain soil moisture at around 60%, which corresponds to a “dry‑wet” regime—alternating between dry and moist conditions—as this level is most favorable for nitrogen-fixing bacteria.
 
Do not mix with other pesticides. Never combine it with fungicides, insecticides, herbicides, or sulfur‑containing fertilizers such as potassium sulfate, as these can easily kill beneficial microorganisms.
 
When used in combination with chemical fertilizers, the amount of chemical fertilizer should not be excessive. High concentrations of chemicals can be toxic to the microorganisms in microbial fertilizers; special care should be taken to avoid mixing them with alkaline fertilizers or physiologically alkaline fertilizers.
 
Do not immediately replace all other fertilizers. For fields that have relied on chemical fertilizers for many years, after applying bio‑fertilizer, do not drastically reduce the application of either chemical or organic fertilizers. Since crops have developed a dependence on chemical fertilizers, they cannot adapt overnight to replacing nitrogen fertilizer with bio‑fertilizer; therefore, the substitution rates should be 30% in the second year, 40% in the third year, and 60% in the fourth year.
 
Apply it early. Bio‑fertilizers are not quick‑acting, so for best results, apply them 7–10 days before the vegetable’s critical nutrient‑uptake period and its peak absorption phase.
 
    Humic acid manufacturer The benefits of humic‑acid‑rich organic fertilizers are as follows: Humic acid is produced only through aerobic decomposition, whereas commonly applied fertilizers such as pig slurry and human manure are liquid and undergo anaerobic decomposition by oxygen‑deprived bacteria. This not only fails to generate humic acid but also releases harmful substances like methane and hydrogen cyanide. To rectify this situation, it is essential to apply fully decomposed organic fertilizers.

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