EDDHA Fe

The main differences lie in the chelation process, stability, and applicable soil range.

• Ferrous SulfateIt is an inorganic iron salt that is easily oxidized to ferric iron and precipitates in soil, with low availability in alkaline soils, and long-term use may acidify the soil.
• EDDHA-FeNa-6It is an organic chelated iron fertilizer, extremely stable in soil. Maintains high effectiveness even in alkaline soil with pH 7-9, will not be fixed or precipitated, and can be directly absorbed and utilized by crops.

For alkaline or calcareous soils (fruit trees, vegetables, flowers, etc.), EDDHA chelated iron is the best choice to correct iron deficiency chlorosis.

Ortho-ortho content refers to the proportion of EDDHA molecules where both ortho-hydroxyl groups simultaneously chelate with iron. It is a key indicator of EDDHA chelated iron quality:

• High Ortho Value(1.2-4.8%): Indicates higher chelation stability between EDDHA and iron, resulting in stronger availability in soil.
• BioavailabilityThe higher the ortho-ortho value, the better the iron bioavailability and crop absorption.
• StabilityThe ortho-ortho structure keeps the iron chelate stable over a wide pH range (7-9).

This product has an ortho-para value of 1.2-4.8%, making it a high ortho-value product with excellent performance and stability in alkaline soils.

The timing of iron supplementation should be determined based on the crop growth cycle and the appearance of iron deficiency symptoms.

• Germination (Spring)Promotes leaf development, prevents early iron deficiency chlorosis, and provides sufficient iron for new shoot growth.
• Before and After FloweringEnsures normal pollen development, increases fruit set rate, and reduces flower and fruit drop.
• Young fruit stageEnhances leaf photosynthesis, provides sufficient nutrients for fruit development, and improves fruit quality
• Post-harvest (Autumn)Replenishes tree nutrients, restores tree vigor, and lays a solid foundation for a bountiful harvest the following year.

For alkaline soil orchards or crops that frequently show iron deficiency symptoms, it is recommended to apply once before spring budding and once after autumn harvest as a preventive fertilization.

Shelf life is when stored in original sealed packaging in a cool, dry, and well-ventilated place.24 MonthsStorage precautions:

• Avoid direct sunlight, store in a dry and ventilated warehouse
• Stack gently, handle with care, prevent package damage
• Avoid mixing with strong oxidizers, strong acids, or strong bases
• Use promptly after opening; reseal unused product for storage.

This product has been exported to Southeast Asia, the Middle East, Europe, South America, and other regions. Available export documents include:

• Commercial Invoice
• Packing List
• Certificate of Origin (CO/Form E/Form A)
• Phytosanitary Certificate
• SDS/MSDS (Multi-language Versions)
• Certificate of Analysis (COA)
• Sea/Air Bill of Lading

Each application method has its own advantages; choose based on specific conditions:

• Drip Irrigation / Flush ApplicationSuitable for large-area basal or top dressing; iron is absorbed by roots and transported throughout the plant with a long-lasting effect. Recommended dosage: 1-3 kg/mu.
• Foliar SprayFast-acting, suitable for emergency correction after iron deficiency symptoms appear, quickly replenishes iron. Recommended dosage 500-1000 g/mu, dilute 1500-2500 times.

For severe or acute iron deficiency symptoms, it is recommended to combine methods: first apply foliar spray for rapid symptom correction, then use drip irrigation for supplemental nutrition to achieve both symptomatic and root cause treatment.