Chelated Copper EDTA 12% – Uses, Dosage & Application

Chelated Copper (EDTA Copper 12%) is a straight micronutrient fertilizer registered under India's Fertilizer (Control) Order, 1985 (FCO). It supplies copper in an EDTA-chelated, water-soluble form for foliar and fertigation use. Since fertilizers fall under the FCO rather than the Central Insecticides Board (CIB), the crop, symptom and dosage information on this page is drawn from Punjab Agricultural University (PAU) and ICAR package-of-practices guidance on copper deficiency management, along with the product's own FCO label application rate.

Which Deficiency Symptom Is This For? (Symptom Guide)

Copper deficiency is less common than zinc or iron deficiency but shows up distinctly in cereals, citrus and vegetables grown on light, sandy or peaty/reclaimed soils. The table below lists crops where this deficiency is typically seen and its field symptoms.

Mode of Action

Copper is a catalytic component of several plant enzymes (including plastocyanin and various oxidases) involved in photosynthesis, respiration and lignin synthesis, which gives stems their structural strength. It is also required for pollen viability and seed set in cereals. Chelating copper with EDTA keeps it in a soluble, plant-available form that is not readily locked up by soil pH or by organic matter, allowing efficient uptake through leaves or the root zone even in soils where free copper ions would otherwise be fixed.

Features & Benefits

• Corrects copper deficiency causing die-back, leaf twisting and weak stems in cereals, citrus, cotton and vegetables.
• EDTA chelation keeps copper water-soluble and available for rapid foliar absorption.
• Supports pollen fertility and grain/boll set in cereals and cotton.
• Strengthens stem tissue via its role in lignin formation, reducing lodging risk.
• Compatible with most common foliar fertilizer and fertigation programmes at low use rates.
• Suitable for soils where copper is tied up — sandy, peaty or heavily reclaimed land.

Recommended Usage

Chelated micronutrient EDTA products are applied at low, percentage-based foliar concentrations rather than a bulk per-acre rate. The doses below reflect the commonly followed rate for 12% chelated copper EDTA foliar sprays and the product's own FCO label directions.

These are percentage/concentration-based foliar spray rates, as is standard for EDTA-chelated micronutrients — the very small quantity of active copper needed per plant means a per-acre bulk figure is not meaningful the way it is for bulk soil fertilizers; mix the stated grams per litre of water and spray to the point of leaf run-off. Rates are based on commonly followed agricultural-extension practice for chelated copper EDTA and the product's own FCO label; confirm the exact label rate and always patch-test on a small area before a full-field spray.

How to Use

1. Confirm copper deficiency before spraying — look for shoot die-back, leaf twisting or poor grain/boll set, and where possible confirm with a soil or tissue test.
2. Dissolve the required quantity completely in the specified water volume; chelated copper is fully water-soluble and does not need a separate wetting agent.
3. Spray to the point of run-off using a knapsack or power sprayer fitted with a fine nozzle for even leaf coverage, including the underside of leaves.
4. Apply during the cooler part of the day (early morning or evening) to reduce evaporation and the risk of leaf scorch.
5. Avoid mixing with strongly alkaline pesticides or fertilizers unless compatibility is confirmed, as this can affect chelate stability.
6. Repeat only if deficiency symptoms persist after the first spray; avoid routine repeated use on soils that are not copper-deficient.

Precautions & Safety

• Wear gloves and a mask while handling, mixing and applying, as a routine precaution for any fertilizer input.
• Avoid foliar spraying during peak heat, bright sunshine or before rain.
• Keep away from direct contact with eyes and skin; wash immediately with water if contact occurs.
• Do not exceed the recommended concentration — excess copper can be phytotoxic and cause leaf scorch.
• Store in the original, tightly closed pack in a cool, dry place away from direct sunlight, and out of reach of children and livestock.
• Wash hands, face and any exposed skin thoroughly with soap and water after handling or spraying.

Brand names mentioned on this page are registered trademarks of their respective owners and are referenced here for identification purposes only; FarmMate is not affiliated with or endorsed by these brands. This page is for general information only — always consult your local agricultural extension office and confirm the current product label before use.