Hello! Humic acid powder is mixed with magnesium sulfate and magnesium oxide. Can you elaborate on this issue in detail?

Let’s start with magnesium. Magnesium is a medium element in agriculture, that is, the demand of crops is second only to the three macroelements of nitrogen, phosphorus and potassium. Magnesium sulfate is widely used as a raw material for flushing fertilizers and organic fertilizers in various agricultural applications because of its low price. Generally speaking, magnesium sulfate costs between 300 and 400 per ton. After application, the crop will appear green and tender, which can meet the needs of consumers.

Early flush fertilization is generally of this type, such as using magnesium sulfate dissolved in water, then adding plant regulators (sodium nitrophenolate and da-6 are commonly used), and finally adding dyes and enhancers. After adding the thickening agent, it is immediately put on the shelves.

Organic fertilizer and magnesium sulfate are also indispensable raw materials. In the final analysis, one is because of the low price and the other is the intuitive effect. In recent years, organic fertilizer companies have used a large number of scraps from urban industries or various factories as raw materials, euphemistically known as waste utilization. In fact, on the contrary, using these industrial or municipal wastes to add animal manure, humic acid or mushroom stick powder and other simple fermentation-produced organic fertilizers, many of which are heavy metals and other difficult-to-degrade substances, are applied to farmland, which is a fundamental problem. Instead of solving the problem, the source of pollution has expanded to farmland, causing a wider range of food safety problems. Some processes are even simpler. Magnesium sulfate + humic acid + locally sourced raw materials are directly mixed and packaged to become so-called organic fertilizers of various names.

Humic acid, simply put, is low-grade coal extract, soluble in alkali solution. The price is also very cheap, slightly lower than magnesium sulfate. As for agricultural use, because it is acidic, it can improve the soil when applied to saline-alkali soil, but it is limited to this. Because the humic acid group is not open, it has limited help for crop growth.

Humic acid and sodium hydroxide (potassium) solution form sodium humate. Sodium humate can dissolve in water and has a certain stimulating effect on the growth of crop root systems.

Magnesium oxide is not used much in organic fertilizers. Organic fertilizers mainly use ferrous sulfate and magnesium sulfate. The former is cheaper, and the industrial by-product ferrous sulfate is less than 100 yuan per ton.

You can judge whether it is fake or not based on the product packaging.