Potassium humate is a mineral-based active potassium fertilizer. Fulvic acid is a short-chain molecular structure substance extracted from natural humic acid. It has high loading capacity and physiological activity. Its applications in agriculture and horticulture offer the following benefits: chelating macro and micronutrients for better plant utilization; preventing plant diseases and enhancing waterlogging resistance; stimulating plant microbial activity; slow-release fertilizer, improving the utilization of chemical fertilizers and pesticides; enhancing nutrient absorption and promoting plant germination and growth; accelerating precipitation and decomposition, and improving soil structure.
I. Mechanism of Action of Mineral-Derived Potassium Fertilizer
Mineral-derived potassium humate fertilizer primarily contains potassium humate and organic matter. These components can alter the physical and chemical properties of the soil, promote the growth of soil microorganisms, and release nutrients for crop absorption, thereby improving soil structure, increasing fertility, and enhancing crop yield and quality.
II. Scope of Application of Mineral-Derived Potassium Fertilizer
Mineral-derived potassium humate fertilizer is suitable for crops such as rapeseed, wheat, and soybeans, especially in potassium-rich soils, cadmium-contaminated soils, acidic soils, and arid and water-scarce areas, where its effects are more pronounced.
III. Application Methods of Mineral-Derived Potassium Fertilizer
1. Application Method: It can be applied in three stages: early, mid, and late, as a base application, top dressing, or foliar spray. After base application, cover with soil.
2. Dosage: Generally, it is recommended to use 300-600 grams per acre, which can be adjusted appropriately according to soil conditions and crop growth needs.
3. Fertilization Time: Winter and spring are the best times for application, with late winter and early spring showing the best results. However, topdressing can also be done during the plant’s growth period.
IV. Precautions
1. Mineral-derived potassium humate fertilizer is an acidic fertilizer. When using it, pay attention to the soil pH level to prevent negative impacts on crops due to excessively low pH.
2. Store in a cool, dry place, avoiding mixing with other fertilizers.
3. Carefully control the amount of fertilizer applied to prevent over-fertilization.
In summary, mineral-derived potassium humate fertilizer is a highly efficient organic fertilizer that effectively improves soil and enhances crop yield and quality. However, during use, the amount and method of application need to be scientifically and rationally adjusted based on the specific soil and crop conditions.
