Organic micronutrients and rare earth fertilizers applied to some fruit trees

Plants need many mineral elements during growth and development; including some essential inorganic macro elements such as: N, P, K; Secondary elements such as: Ca, Mg, S; and trace elements such as: Mn, B, Cu, Zn, B, Mo.

Micronutrient copper (Cu) is necessary for the formation of chlorophyll, participates in the synthesis of lighin to prevent plant falling, participates in the oxidation process of ascorbic acid (vitamin C), and activates oxidase enzymes, phenolase and plastocyanin. In addition, Cu also has the effect of killing mold and antibacterial properties for plants. Meanwhile, Zn is an element present in about 70 enzymes and plays an important role in the physiological and chemical processes of plants. Most plants require Zn and the necessary concentration is about 20 - 30 ppm for good plant growth. Zn deficiency will cause auxin exchange disorders, inhibiting growth, leading to deformed leaves, short, small and curly, with short segments. Similarly, Mo is also an element that enhances plant photosynthesis, the presence of Mo helps plants absorb more nitrogen in the form of nitrate, helping microorganisms fix more nitrogen in the air.

Fertilizers that combine phosphate and minerals such as Cu, Zn, and Mo are used to improve the growth environment of plants, activate the soil, increase plant absorption, and help plants effectively absorb certain ingredients, promote germination, and increase chlorophyll content. Trace elements are often added in the form of organic or inorganic salts, applied directly to the soil or through the leaves. However, because they are salts, they are easily washed off the leaf surface or the effectiveness when applied through the soil is also very low. Therefore, the amount of these trace elements used is often large, causing waste and ineffectiveness.

Therefore, the need for complex micronutrient fertilizers and simple and effective methods of producing this fertilizer is essential. Associate Professor, Dr. Dao Ngoc Nhiem - Institute of Materials Science, has carried out the task "Research on technology for manufacturing organic micronutrients and rare earth fertilizers for application to some fruit tree”, code UDPTCN 06/21 - 23, approved The acceptance council at Vietnam Academy of Science and Technology level assessed it as having scientific significance, high applicability and practicality, and ranked it as Excellent.

The mission has achieved main results such as: Successful synthesis of rare earth complexes Cu, Zn, Mo with organic ligands tactric acid and glutamic acid, Extraction of humic acid from waste from the artichoke production process. foliar fertilizer HCVL02, Micronutrient organic foliar fertilizer HCVL01 and HCVL02 with a scale of 10 liters/batch; Total metal content ≈ 110g/liter, %OC > 25%, d ≈ 1.2kg/liter, Testing HCVL01 and HCVL02 fertilizers on cucumber plants yielded > 58 tons/ha (increase > 17%), Nutrient and vitamin content is higher than the control. Testing HCVL01 and HCVL02 fertilizer on cantaloupe plants yielded > 41 tons/ha (an increase of > 19%), the nutritional and vitamin content is higher than the control. proof.

Micronutrient organic fertilizer has the effect of stimulating growth, reducing plant growth time, while increasing yield and quality of fruit. However, in order to apply the results of the task to many types of crops in different regions, it is necessary to continue researching and perfecting the fertilizer production process for trial production to bring the product to wide application on the market.

Micronutrient organic fertilizer products were tested on cucumber plants

Micronutrient organic fertilizer products were tested on melon plants

Photo of patent for method of producing micronutrient organic fertilizer containing Cu, Zn, Mo


Translated by Quoc Khanh
Link to Vietnamese version



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