Boron Deficiency in Mustard

Symptoms

Flower drop, tip dieback, hollow stem, thick distorted leaves.

Cause

Sandy soils, dry weather, high calcium. Narrowest sufficiency range.

Correction Products

Product	Method	Rate
Boron 20% WSP	Foliar + Drip	1–1.5g/L foliar at flowering
Borax 11%	Soil	0.5–1 kg/acre basal

Treatment Steps

1. Confirm with soil test + leaf analysis. Check soil pH.
2. Apply Boron 20% WSP at 1–1.5g 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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