Chelated Manganese EDTA 12% – Uses, Dosage & Application

Chelated Manganese (EDTA Manganese 12%) is a straight micronutrient fertilizer registered under India's Fertilizer (Control) Order, 1985 (FCO). It supplies manganese 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 agricultural-university package-of-practices guidance on manganese deficiency management, along with the product's own FCO label application rate. It is a different manganese chemistry to manganese carbonate (SC) fertilizers — the chelated EDTA form is used mainly for fast, foliar correction rather than bulk basal soil application.

Which Deficiency Symptom Is This For? (Symptom Guide)

Manganese deficiency is common on alkaline, calcareous soils and over-limed fields where manganese becomes chemically locked up even when total soil manganese is adequate. The table below lists crops where this deficiency is typically seen and its field symptoms.

Mode of Action

Manganese is an essential cofactor for enzymes involved in photosynthesis — specifically the oxygen-evolving complex of photosystem II — as well as respiration, lignin synthesis and nitrogen metabolism. Chelating manganese with EDTA keeps it in a soluble, plant-available form that resists being locked up by high soil pH or calcium carbonate, allowing rapid uptake through the leaf surface even where soil-applied manganese sources would quickly become unavailable. This makes the chelated form especially suited to fast corrective foliar sprays once deficiency symptoms are visible.

Features & Benefits

• Corrects manganese deficiency causing grey speck in wheat and interveinal chlorosis in paddy, soybean, citrus and vegetables.
• EDTA chelation keeps manganese available even on alkaline and calcareous soils where ordinary manganese sources get locked up.
• Fast foliar absorption for quick correction once visible deficiency symptoms appear.
• Supports the photosynthetic and respiratory enzyme systems that depend on manganese as a cofactor.
• Compatible with most common foliar fertilizer and fertigation programmes at low use rates.
• Complements manganese carbonate (SC) basal soil treatments as a rapid top-up where deficiency is already visible.

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 manganese 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 small quantity of active manganese 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 manganese 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 manganese deficiency before spraying — look for grey speck in wheat or interveinal chlorosis in other crops, and where possible confirm with a soil test, especially on high-pH or calcareous soils.
2. Dissolve the required quantity completely in the specified water volume; chelated manganese 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 manganese-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 concentration can 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.