EDTA-Zn: Overcoming the pain points of traditional zinc supplementation, empowering crops to improve quality and increase yield

Zinc, as an essential trace element for crop growth and development, is required in small amounts, but through its role in several key physiological processes in the soil, it directly affects crop growth, quality, and yield, with its influence lasting throughout the entire crop growth period.

I.The crucial role of zinc in soil for crop growth

1.Regulate enzyme activity and drive metabolic processes

Zinc is a component or activator of hundreds of enzymes in crops, capable of activating carbonic anhydrase to enhance photosynthetic efficiency, promoting the synthesis of energy substances by amylase and protease, and increasing the activity of antioxidant enzymes to improve crop resistance.

2.Promote hormone synthesis and regulate growth and development

Zinc is a key factor in the synthesis and transport of auxin, promoting root development and shoot and leaf growth, preventing issues such as "small leaf disease" and "stunted seedlings", and regulating flower bud differentiation and fruit setting, reducing flower and fruit drop, and increasing yield.

3.Improve nutrient utilisation and cooperate with nutrient absorption

Zinc can synergistically promote the absorption of nitrogen, phosphorus, potassium and trace elements, activate soil phosphorus, enhance the nutrient transport capacity of roots, and optimise nutrient distribution, directing nutrients towards fruits and seeds, thereby improving crop yield and quality.

4.Enhance stress resistance and withstand adverse conditions

Zinc improves crops' adaptability to drought, salinity, high and low temperatures by regulating osmotic pressure and enhancing antioxidant enzyme activity, reducing oxidative damage, stabilising cell structures, and also boosting disease resistance to ensure healthy crop growth.

5.Improve crop quality and enhance product value
Zinc participates in the synthesis of vitamins, carbohydrates, and proteins, which can increase the sugar content and taste of fruits, raise the protein content in seeds, reduce nitrate accumulation, improve the appearance and storage durability of fruits, and enhance the commercial value of products.

II.Three major harms of zinc deficiency: seedlings do not grow, leaves turn yellow, fruits lack fragrance

Zinc deficiency in crops affects them comprehensively, from physiological metabolism and growth development to yield and quality, and the symptoms are distinctly specific:

1.Growth and development are hindered, with abnormal morphology

(1) Leaf deformities: new leaves become smaller and narrower, lose their green colour and curl, cluster at the tips, and in severe cases dry up and fall off (typical 'small leaf disease' or 'clustered leaf disease');

(2) Plant dwarfing: stems are thin, internodes shortened, growth weak and emaciated, appearing as 'stunted' or 'old seedlings', with hindered heading and flowering;

(3) Poor root system: roots are short and thin, with few lateral roots and sparse root hairs, weak water and nutrient absorption, prone to stress and pest attacks;

(4) Reproductive abnormalities: poor flower bud differentiation, few flowers and fruit set, high flower and fruit drop, small and deformed fruits, uneven colouring, low commercial value.

2.Physiological and metabolic disorders, functional dysfunction

(1) Weakened photosynthesis: Reduced carbonic anhydrase activity, inhibited chlorophyll synthesis, decreased photosynthetic efficiency, insufficient nutrient accumulation;

(2) Low fertiliser efficiency: Affects the absorption and conversion of nutrients such as nitrogen and phosphorus, leading to the phenomenon of 'no yield increase despite fertilisation';

(3) Poor stress resistance: Decreased antioxidant enzyme activity, increased accumulation of reactive oxygen species, damaged cell membranes, crops are prone to early senescence due to drought, salinity, alkalinity, and diseases.

3.Decline in both yield and quality, economic losses

(1) Yield reduction: Low grain setting rate and light grain weight for cereal crops; fewer fruits and vegetables with small fruits, generally reduced by 20%-50%, with total crop failure in severe cases;

(2) Quality decrease: Lower protein and starch content in grains, poor taste; fruits and vegetables have low sugar, high acidity, less vitamin C, more nitrate, poor fruit shape, uneven colouring, and low commercial value.

 III.Why Choose EDTA-Zn?

Traditional zinc fertilisers belong to the 'soil transformation type', which rely on the soil environment to convert into absorbable forms and are easily fixed or antagonised, resulting in passive and low-efficiency crop absorption, with very poor effectiveness in alkaline, saline-alkaline, and other adverse soils. In contrast, EDTA-chelated zinc belongs to the 'active delivery type', encapsulating zinc in a stable form through a chelation structure, avoiding fixation and antagonism issues, and delivering it directly to the crop roots, allowing efficient absorption without being affected by the soil environment.

Five key advantages of EDTA-Zn:

1.Outstanding stability, preventing nutrient inactivation

• High stability and efficiency: The chelation structure isolates interference from ions such as phosphate and carbonate in the soil, preventing the formation of insoluble compounds or fixation by the soil;
• Broad adaptability and alkali tolerance: Remains active within a pH range of 4-10, especially suitable for alkaline and calcareous soils, ensuring continuous effective absorption of zinc.

2.High absorption efficiency, reducing nutrient waste

• Rapid absorption: The chelated structure is highly compatible with the root system, allowing quick active transport into the crop, with an absorption efficiency 2-3 times that of inorganic zinc;
• Antagonism resistance and no transformation required: Can avoid the absorption antagonism of calcium, magnesium, iron and other elements on zinc, directly participates in metabolism, requiring no additional energy conversion, and takes effect faster.

3.Flexible use, suitable for various scenarios

• Flexible methods: Supports foliar spraying, drip irrigation, fertigation, basal application and seed coating, compatible with common water-soluble fertilisers and soil conditioners;
• Efficient and economical: Requires small amounts, low cost and unlikely to overdose, suitable for large-scale planting and precise fertilisation management.

4.High safety, crop-friendly

• Gentle application: The chelated structure does not easily burn leaves, roots, or flowers, making it safe to use during sensitive periods of the crop.
• Environmental friendly: No residue, does not harm the soil, long-term use does not destroy soil ecology, complying with the requirements of green agriculture.

5.Synergistic enhancement to improve overall fertiliser efficiency

• Complementary enhancement: When used with biostimulants, it can utilise the improved soil aggregate structure and environment to enhance the mobility and absorption efficiency of zinc.
• Synergistic nutrition: It can work synergistically with other micro and trace elements to comprehensively supplement crop nutrition, avoid single nutrient deficiencies, and achieve balanced yield improvement.

 IV.Application Recommendations

V.Conclusion

EDTA-Zn overcomes the limitations of traditional zinc fertilisers through chelation technology, efficiently alleviating zinc deficiency in crops. It has advantages such as rapid absorption, active application, environmental friendliness, and strong synergy, making it an important tool for improving agricultural quality and sustainable development.

As a global leader in biostimulants and crop nutrition, City Max Group drives agricultural progress through technology, committed to providing precise solutions across the entire cycle, unleashing the potential of soil and crop systems, and jointly building a sustainable agricultural future.

Product link：https://www.citymax-group.com/growmax-zn-product/