Iron EDDHA 6% is the gold-standard iron chelate for correction of lime-induced iron chlorosis in strongly alkaline and calcareous soils (pH 7.5–9+). EDDHA (ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid)) forms a far more stable iron complex than EDTA at high pH — remaining plant-available when all other iron sources have precipitated.
The efficacy of Fe-EDDHA depends critically on the ortho-ortho isomer content. Our product guarantees a minimum of 4.8% ortho-ortho Fe — the biologically active fraction that is absorbed by plant roots. Low-quality products may have lower o-o isomer content and inferior agronomic performance.
Fe-EDDHA must be applied to soil (not foliar) for maximum effectiveness. Soil application at pre-planting or early spring provides season-long iron nutrition for perennial crops. Used worldwide for citrus, stone fruits, strawberry, kiwi and ornamentals in Mediterranean and calcareous soil conditions similar to those found in Maharashtra and Gujarat.
| Fe total (EDDHA) | 6.0% min |
| Fe ortho-ortho isomer | 4.8% min |
| Fe ortho-para isomer | ≤1.2% |
| Water Solubility | Complete |
| pH stability | 3–11 (optimal >7.5) |
| Moisture | 3% max |
| Form | Dark red-brown micro-granules |
| Heavy Metals | <10 ppm |
| Soil Application (Perennials) | 1–3 kg per ha per application |
| Drip Irrigation | 1–2 kg per acre |
| Application Timing | Pre-bud break or early spring |
| Frequency | 1–2 applications per season |
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