Blossom End Rot in Tomato — Causes, Treatment & Prevention

⚠️ Act fast — most crop problems worsen quickly. Identify the cause first before spraying. Wrong treatment wastes money and can damage the crop further.

Common Causes of Blossom End Rot in Tomato

Calcium deficiency in developing fruit
Inconsistent watering disrupting Ca uptake
Excessive nitrogen application
High ammonium-N reducing Ca uptake
Root damage from nematodes or deep cultivation

Treatment

Immediate: Calcium EDTA 2–3g/L foliar spray every 7 days × 3 applications. Drip: Calcium Nitrate 2–2.5kg/acre/week. Reduce ammonium-based fertilizers — switch to Calcium Nitrate for N source. Maintain even soil moisture.

Prevention

Calcium Nitrate as the primary N source (not urea) for drip tomato. Consistent daily irrigation schedule. Soil calcium >1000 ppm (soil test). Mulch to prevent moisture extremes.

Products to Use

Calcium EDTA chelated Calcium Nitrate Calcium Chloride 77% 📈 Dose Calculator

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Blossom End Rot in Tomato — Causes & Treatment

Common Causes of Blossom End Rot in Tomato

Treatment

Prevention

Products to Use

Get Expert Diagnosis & Products

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