is a high-stability chelated iron micronutrient, specially formulated to fix stubborn crop iron chlorosis in alkaline, calcareous and saline-alkali soils. Outperforming regular iron fertilizer and EDTA Fe (invalid above pH 7.5), it maintains full nutrient activity in a wide pH range of 4.0–10.0. Featuring stable O-O isomer structure, high bioavailability and 100% water solubility, it is the top choice for high-value iron-sensitive crops and professional fertilizer compounding.
Most alkaline farmland suffers from iron inactivation rather than iron deficiency. Soil iron easily binds with calcium, phosphorus and carbonate to form insoluble precipitates that crops cannot absorb. EDTA Fe and inorganic iron fail completely in high-pH soil, causing recurring yellow leaves and stunted growth. EDDHA Fe's stable chelating structure locks iron ions firmly, anti-oxidation and anti-fixation, providing sustainable available iron for crops in all soil conditions.
Applicable High-Value Crops
Perfect for all iron-sensitive crops widely planted in alkaline soil areas:
Full pH stability (4.0–10.0): Works in all soil types, makes up for EDTA Fe's high-pH failure
: Active O-O isomer ensures low dosage and high absorption
100% water-soluble
Long-lasting efficacy: Provides 4–6 weeks of continuous iron nutrition to reduce fertilization cost
EDDHA Fe 6% yellow crystal powder with low heavy metal content. Standard 25kg moisture-proof packaging, supporting OEM, private label and custom packaging. Complete export certifications, stable bulk supply, 24/7 technical guidance and customized crop fertilization solutions are available for global clients.
Q1: What is the difference between EDDHA Fe and EDTA Fe?
A1: EDTA Fe loses efficacy and becomes inactive in soil above pH 7.5, while EDDHA Fe remains stable and fully active in pH 4.0–10.0. It is the only reliable chelated iron to fix stubborn chlorosis in alkaline, calcareous and saline-alkali soils with far higher crop bioavailability.
Q2: What crops need EDDHA Fe fertilizer most?
A2: It is essential for iron-sensitive high-value crops, including citrus, grapes, strawberries, apples, peaches, acid-loving ornamental plants, vegetables and turf grass. It perfectly solves recurring yellow leaf problems in alkaline soil planting areas.
Q3: Can EDDHA Fe be mixed with other fertilizers and pesticides?
A3: Yes. It features excellent compounding stability and can be safely mixed with most macro-element fertilizers, other chelated micronutrients and neutral agrochemicals, helping upgrade overall fertilizer formula efficiency.
Q4: What application methods are available for EDDHA Fe?
A4: 100% water-soluble formula supports multiple usage: foliar spraying, soil drenching, drip irrigation, fertigation and hydroponic nutrient solution preparation, no residue and no pipeline blockage.
Q5: How long does the effect of EDDHA Fe last?
A5: The stable chelating structure resists oxidation and soil fixation, providing continuous available iron nutrition for 4–6 weeks, effectively reducing fertilization frequency and planting costs.
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