This article focuses on Shanxi Jinfeng’s precise nutrient supply solutions, with Eddha chelate iron and potassium humate fertilizer as the core, to solve the common problems of nutrient deficiency (such as iron deficiency yellowing) and low nutrient utilization rate in crops. It systematically explains the principle of chelation technology—how chelated iron fertilizer for plants “wraps” iron ions to avoid oxidation and fixation in alkaline soil, and how potassium humate fertilizer improves potassium absorption efficiency through humic acid chelation.
Nutrient deficiency is a “hidden danger” in agricultural production—even if a large amount of fertilizer is applied, crops still show symptoms such as yellowing leaves, stunted growth, and poor fruit quality. The root cause is not the lack of nutrients, but the low bioavailability. For example, iron deficiency yellowing (new leaves turn yellow, veins remain green) is common in northern alkaline soil, because traditional iron fertilizers (such as ferrous sulfate) are easily oxidized to insoluble trivalent iron in alkaline environment, and crops cannot absorb them. Similarly, potassium fertilizer is easily leached by rainwater or fixed by soil colloids, with a utilization rate of only 35-40% .
Shanxi Jinfeng Bio-Technology, relying on advanced chelation technology, has developed a series of precise nutrient products represented by Eddha chelate iron and potassium humate fertilizer, which fundamentally solve the problem of “fertilizer application but no absorption”.
The core of Jinfeng’s chelated iron fertilizer for plants is EDDHA (ethylenediamine di-o-hydroxybenzyl acetic acid) chelation technology, which is known as the “gold standard” in chelated iron. EDDHA is a high-efficiency chelating agent that can form a stable six-membered ring structure with iron ions, like putting a “protective suit” on iron ions . This structure has extremely high stability—even in soil with pH 3-10, it can maintain the water solubility of iron ions, avoiding oxidation and precipitation . Compared with traditional ferrous sulfate, Jinfeng’s Eddha chelate iron has an absorption rate increased by 80%, and the effective period is extended from 7-10 days to 2-3 months . In a citrus orchard in Guangxi, after applying Jinfeng’s chelated iron, the yellow leaves of citrus trees turned green in 7 days, and the fruit setting rate increased by 20% in that year, and the sugar content of the fruit increased by 1.5 degrees .
Jinfeng’s potassium humate fertilizer achieves “double improvement” of potassium utilization rate and soil fertility through the synergy of humic acid and potassium. On the one hand, the carboxyl and hydroxyl groups in humic acid can chelate potassium ions, forming a stable humic acid-potassium complex, which slows down the leaching of potassium and releases it slowly according to the needs of crops, increasing the utilization rate of potassium by 30% . On the other hand, humic acid improves soil structure, increases soil cation exchange capacity, and creates a good environment for root growth, further promoting potassium absorption. In an apple orchard in Shaanxi, the application of Jinfeng’s potassium humate fertilizer increased the potassium content in apple leaves by 28%, the fruit hardness increased by 0.3 kg/cm², and the storage period was extended by 15-20 days. The orchard owner, Mr. Zhao, said: “In the past, applying potassium fertilizer was like ‘pouring water’. Now using Jinfeng’s product, not only the apples are bigger and sweeter, but also the soil is more fertile, and the amount of fertilizer used is reduced by 25%.”
For the question of ‘What is fulvic mineral iron chelate’, it is actually a combination of fulvic acid and chelated iron, which is another innovative product of Jinfeng. Fulvic acid, as a small molecular humic acid, has strong penetration and can quickly transport chelated iron to crop cells, realizing “fast supplement and long-term maintenance”. This product is especially suitable for tree fertilizer with iron, such as apple and peach trees. When used in spring bud stage, it can quickly alleviate iron deficiency symptoms and promote bud differentiation. It is worth mentioning that while answering agricultural questions, many people also care about what does fulvic acid do for the body. It should be noted that fulvic acid used in agriculture and food-grade fulvic acid are different in purity and processing technology. Jinfeng’s agricultural humic extract fulvate is for crop use only, and cannot be used for human consumption. For fulvic acid products for body care, please choose products that meet food safety standards.
Jinfeng’s advantage in precise nutrient products lies in “customization and high purity”. The company strictly controls the purity of raw materials—EDDHA in Eddha chelate iron has a purity of 99%, and the potassium content in potassium humate fertilizer is not less than 12% . At the same time, according to different crops and soil conditions, customized formulas are provided. For example, tree fertilizer with iron for northern apple trees increases the proportion of EDDHA chelated iron to adapt to the high pH environment; for southern acidic soil, the formula increases the content of potassium humate to improve soil fertility. These products have passed the third-party testing of SGS, and the heavy metal content is far lower than the national standard, which is safe and environmentally friendly.
Q1: My peach trees have severe iron deficiency yellowing, and I have used ferrous sulfate many times with no effect. Can Jinfeng’s Eddha chelate iron be used? How to apply it correctly?
A1: Ferrous sulfate is ineffective in alkaline soil, and our Eddha chelate iron is exactly the solution to this problem. For peach trees, we recommend two application methods: 1. Soil application: Dig a circular trench 30 cm away from the trunk (depth 20 cm), apply 50-80 grams of Eddha chelate iron per tree, mix with soil and cover, then water thoroughly. This method has a long-term effect and can last for 2-3 months. 2. Foliar spraying: Dilute the product 1000 times, spray the back of the leaves (where stomata are concentrated) in the morning or evening, once every 7 days, 2 times in a row, and the yellow leaves can turn green in about 10 days. It is best to mix with a small amount of Jinfeng’s humic powder when applying, which can further improve the absorption rate . You can also check the “Fruit Tree Nutrient Deficiency Solution” column on official website for detailed operation videos.
Q2: What is fulvic mineral iron chelate? How is it different from ordinary Eddha chelate iron? Which one is better for my grapevines?
A2: Fulvic mineral iron chelate is a compound of fulvic acid and EDDHA chelated iron. Its biggest difference from ordinary Eddha chelate iron is the addition of fulvic acid, which has strong penetration and can quickly transport iron ions into grape cells, so the effect of alleviating iron deficiency is faster. For grapevines, which have high requirements for nutrient supply speed (especially during the young fruit stage), Fulvic mineral iron chelate is more suitable. It can not only solve yellowing but also promote the expansion of young fruits. The application method is simple: dilute 800 times and spray the leaves, which can take effect in 3-5 days. If your vineyard has serious soil hardening, it is recommended to use it together with Jinfeng’s potassium humate fertilizer to improve soil structure while supplementing nutrients.
Q3: I heard that potassium humate fertilizer can improve fruit quality. Can it be used for my greenhouse tomatoes? Will it conflict with the amino acid for plants I am currently using?
A3: It is very suitable for greenhouse tomatoes, and there is no conflict with amino acid for plants—on the contrary, they can synergize! Potassium humate fertilizer can promote the transport of photosynthetic products from tomato leaves to fruits, increasing the sugar content by 1-2 degrees and the vitamin C content by 15%. When used with amino acid for plants, amino acids can promote the absorption of potassium by tomato roots, and potassium can enhance the stress resistance of tomatoes, reducing the incidence of blossom-end rot. The recommended application plan is: apply potassium humate fertilizer (diluted 300 times) through drip irrigation during the tomato fruit expansion period, once every 10 days, and spray amino acid for plants (diluted 500 times) once during the coloring period. A tomato grower in Hebei used this method and found that the tomatoes were brighter in color, firmer in flesh, and the shelf life was extended by a week, and the purchase price was increased by 0.5 yuan per catty.
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