Manganese Deficiency in Vanilla

Symptoms

Grayish-green interveinal mottling on young leaves.

Cause

pH>6.5, overlimed soils, alkaline soils.

Correction Products

Product	Method	Rate
Manganese EDTA 13%	Foliar + Drip	1–2g/L foliar
Manganese Sulphate 30.5%	Soil + Foliar	5g/L foliar / 5–8 kg/acre

Treatment Steps

1. Confirm with soil test + leaf analysis. Check soil pH.
2. Apply Manganese EDTA 13% at 1–2g as emergency foliar spray. Repeat after 7–10 days.
3. Apply drip or soil for lasting correction.
4. Include in regular nutrition program to prevent recurrence.

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