Copper Deficiency in Coffee — Symptoms, Causes & Treatment

🔍 Symptoms

Wilting of young leaves, tip die-back, blue-green discolouration. In cereals: "reclamation disease" — twisted leaves, empty grain. In trees: "exanthema" — gum exudation, bark cracks.

🧩 Cause

High pH soils, high organic matter soils (organic matter binds copper), over-application of phosphorus or nitrogen.

🌿 Crop Info

Region: Karnataka, Kerala, Tamil Nadu
Soil: Laterite, pH 5.5–6.5
Season: Year-round

Correction Methods for Coffee

Product	Method	Rate	Best For
Copper EDTA 15%	Foliar + Drip	0.3g/L foliar, 200g/acre drip	Fast correction
Copper Sulphate 25%	Soil + Foliar	2–5g/L foliar, 3–5 kg/acre soil	Soil correction, also fungicide

Step-by-Step Treatment Plan

Confirm deficiency — Take leaf and soil samples. Send to lab or use visual diagnosis. Soil pH test critical (check at root zone depth).
Immediate foliar correction — Apply Copper EDTA 15% at 0.3g/L foliar as emergency foliar spray. Spray in morning or evening. Repeat after 7–10 days.
Drip/soil correction — Apply via drip fertigation or soil for lasting correction. Single foliar application is temporary fix only.
Soil amendment — If soil pH is the cause: apply gypsum to reduce pH in alkaline soils, or lime if acidic. Target pH 6–7.
Prevent recurrence — Include micronutrient schedule in regular fertigation program. Soil test every season.

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