Zinc EDTA Chelated 12% – Uses, Dosage & Application

Zinc EDTA Chelated 12% is a fully water-soluble, chelated micronutrient fertilizer registered for use in India under the Fertilizer (Control) Order, 1985 (FCO) — not the Insecticides Act, since micronutrient fertilizers are a plant-nutrition product, not a crop-protection one. Zinc is an essential micronutrient for enzyme activity, auxin (growth hormone) synthesis and chlorophyll formation, and its deficiency is one of the most widespread micronutrient problems in Punjab and North Indian soils. Dosage guidance on this page draws on Punjab Agricultural University (PAU) Package of Practices and ICAR recommendations for zinc nutrition, read alongside the product's own FCO label application rate for this specific chelated formulation.

Which Deficiency Symptom Is This For? (Symptom Guide)

Not sure whether what you're seeing in the field is zinc deficiency? This guide helps match the visible symptom to the crop before deciding on a spray.

Mode of Action

Zinc EDTA is a chelated form of zinc, in which the zinc ion is bound within an EDTA (ethylenediaminetetraacetic acid) molecule. This chelation keeps zinc in a soluble, plant-available form even in alkaline or calcareous soils where ordinary zinc sulphate can quickly become fixed and unavailable. Once absorbed — through leaves in a foliar spray or through roots in a soil/fertigation application — zinc functions as a cofactor for numerous plant enzymes, plays a central role in the synthesis of the growth hormone auxin (IAA), and supports chlorophyll formation and protein synthesis. Because the chelate structure protects the zinc ion from being locked up by soil calcium and carbonates, chelated zinc is typically more efficient, gram for gram, than conventional zinc sulphate on high-pH soils.

Features & Benefits

• Fully water-soluble, 100% chelated zinc source that stays plant-available even on alkaline/calcareous soils where zinc sulphate is quickly fixed.
• Corrects khaira disease in paddy, white bud in maize, little leaf in cotton and interveinal chlorosis in wheat and sugarcane.
• Fast foliar uptake gives a visible greening response within days of spraying on deficient crops.
• Low use-rate per litre compared to zinc sulphate, since the chelated form is more efficiently absorbed.
• Compatible with most common fertilizers and crop-protection products in a tank mix (a jar-compatibility test is still recommended before mixing).

Recommended Usage of Zinc EDTA Chelated 12% Fertilizer

PAU package-of-practices and ICAR recommendations for zinc correction are generally expressed for zinc sulphate as a percentage foliar-spray concentration or a soil application rate per hectare; the table below adapts this to the chelated EDTA form using the product's own FCO label application rate, which reflects its higher zinc availability per unit weight.

Doses above are expressed as a percentage/concentration rather than a per-acre quantity because chelated micronutrient foliar sprays are dosed by the concentration of the spray solution, not by land area — this is the standard way PAU/ICAR and FCO product labels present chelated micronutrient rates. Always confirm the current product label before use and consult your local agricultural extension office for soil-test-based recommendations.

How to Use

1. Confirm zinc deficiency symptoms against the Symptom Guide above, and where possible get a soil or tissue test done through your local Krishi Vigyan Kendra (KVK) to confirm zinc status.
2. Dissolve the required quantity of Zinc EDTA Chelated 12% fully in a small amount of water first, then add it to the spray tank and top up to the required volume while stirring.
3. Spray using a knapsack or power sprayer fitted with a flat-fan or fine mist nozzle, ensuring uniform coverage of both leaf surfaces.
4. Spray during the early morning or late evening to reduce evaporation and improve leaf uptake; avoid spraying in strong sunlight or just before rain.
5. Repeat the spray after 15–20 days if deficiency symptoms persist in new growth, following the crop-wise schedule in the table above.

Precautions & Safety

• Wear basic protective clothing and gloves while mixing and spraying, as a routine precaution for any agricultural input.
• Do not exceed the recommended concentration — spraying zinc at a higher-than-labelled concentration can cause leaf scorch rather than faster correction.
• Avoid tank-mixing with strongly alkaline products or with phosphatic fertilizers in high concentration without a jar-compatibility test, since zinc availability can be affected by pH and phosphorus interactions.
• Store in the original, tightly closed container in a cool, dry place away from direct sunlight, food, feed and out of reach of children and livestock.
• This foliar fertilizer is a supplement to, not a replacement for, balanced soil fertilization — follow your local agricultural extension advice on fitting it into your overall soil-nutrition programme.
• 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.