Iron deficiency yellowing (yellow leaf disease) is a global problem in alkaline soils. Conventional ferrous sulfate can hardly meet the needs of modern agriculture due to its low bioavailability (only 5-10%) and its application only in acidic soils (pH≤7), but is almost ineffective in neutral and alkaline soils with pH>7, which is prone to cause soil salinization.
EDDHA Fe-6%, as a representative of mature chelated iron technology, can maintain efficient activity in soil environment of pH 3-10 through stable neighbor chelating structure (neighbor value ≥80%), especially solving the stubborn problem of iron supplementation in alkaline soil of pH≤9. Its core value lies in:
- High-efficiency absorption: iron element reaches the plant root system directly in chelated state, the absorption rate is nearly 100%, and the dosage is only 1-5% of ferrous sulfate;
- Soil friendly: no risk of salinization after application, instead it can fix the beneficial components of soil and reduce nutrient loss;
- Agro-compatible: it can be mixed with pesticides and herbicides, and supports multi-scenario applications such as drip irrigation, leaf spraying and root application.
It has been tested that in soil with pH 8.2, the rate of yellowing and re-greening of leaves after 7 days of treatment with EDDHA Fe-6% reaches 98%, the growth of new leaves is accelerated by 40%, and the average yield is increased by 12%. The product has been widely used in citrus, grapes, peanuts and other economic crops, as well as gardenia, azalea and other landscape plants.
Our EDDHA Fe-6% strictly follows industrial standards and has quality assurance: iron content ≥6.0%, chlorine residue ≤0.1%, and high water solubility to ensure rapid onset of action, which helps to provide scientific support for crop health and productivity enhancement in high pH soil areas.
Please visit our website for product samples and customized crop solutions.
Post time: Feb-14-2026