EDDHA iron sodium salt

The main differences lie in the chelation process, stability, and applicability range to soil types:

• Ferrous sulfateIt is an inorganic iron salt that easily oxidizes to ferric iron precipitate in soil, has low efficiency in alkaline soils, and long-term use can lead to soil acidification.
• EDDHA-FeNa-6This is an organic chelated iron fertilizer that is extremely stable in soil. It retains high efficacy even in alkaline soils with pH 7-9, does not immobilize or precipitate, and can be directly absorbed and utilized by plants.

For alkaline or calcareous soils (fruit trees, vegetables, flowers, and other crops), EDDHA chelated iron is the optimal choice for correcting iron deficiency chlorosis.

Ortho-ortho content is the proportion of EDDHA molecules in which both ortho-hydroxyl groups simultaneously chelate iron. This is an important quality indicator for EDDHA iron chelate:

• High ortho content(1.2-4.8%): indicates higher chelation stability of EDDHA with iron and increased efficiency in soil.
• BioavailabilityThe higher the ortho value, the higher the bioavailability of iron and its absorption efficiency by plants.
• StabilityOrtho structure ensures iron chelate stability over a wide pH range (7-9).

The ortho-isomer of this product is 1.2-4.8%, making it a high ortho-isomer product, providing excellent efficacy and stability in alkaline soils.

The application period for iron should be determined according to the crop growth cycle and the appearance of deficiency symptoms:

• Germination phase (spring)Promotes leaf development, prevents premature yellowing due to iron deficiency, and supplies sufficient iron for new shoot growth.
• Before and after floweringEnsures normal pollen development, improves fruit set, and reduces flower and fruit drop.
• Young Fruit StageStimulates leaf photosynthesis, provides sufficient nutrition for fruit development, and improves fruit quality.
• Post-harvest (autumn)Replenishes tree nutrition, restores vitality, laying the foundation for a bumper harvest next year.

For orchards on alkaline soils or crops frequently showing iron deficiency symptoms, it is recommended to apply fertilizer once in spring before bud break and once in autumn after harvest as a preventive top dressing.

Store in original packaging, in a cool, dry place with good ventilation. Shelf Life:24 monthsStorage requires attention:

• Avoid direct sunlight, store in a dry, well-ventilated warehouse
• Neat stacking, careful handling to prevent package damage
• Avoid co-storage with strong oxidizers, acids, and alkalis
• After opening the package, use the product as soon as possible and seal the remainder tightly for storage.

The product is exported to Southeast Asia, Middle East, Europe, South America and other regions; provided export documents include:

• Commercial Invoice
• Packing List
• Certificate of Origin (CO/Form E/Form A)
• Phytosanitary Certificate
• SDS/MSDS (Multilingual Version)
• Certificate of Analysis (COA)
• Ocean/Air Bill of Lading

Both application methods have their advantages; the choice depends on specific conditions:

• Drip irrigation/fertigationSuitable for basal application or top dressing over large areas; iron is absorbed by the root system and distributed throughout the plant, providing long-lasting effect. Recommended dose: 1-3 kg/ha.
• Foliar FeedingQuick-acting, suitable for emergency correction when iron deficiency symptoms appear, quickly replenishes iron. Recommended dosage 500-1000 g/mu, dilute 1500-2500 times.

For severe or acute iron deficiency, combined application is recommended: first foliar spray for rapid symptom relief, then fertigation for replenishment, ensuring both symptom and root cause elimination.