CAULIFLOWER NUTRITION

Boron Deficiency in Cauliflower

Identify Boron (B) deficiency symptoms, understand causes and apply the correct treatment for Cauliflower grown in North India, Maharashtra.

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🔍 Symptoms

Poor fruit set, flower drop, hollow stem in cauliflower. Thick, brittle, curled leaves. Cork formation in apple/pear. Cracked fruits. "Heart rot" in beet. Tip dieback in young shoots.

🧩 Cause

Boron leaches easily from sandy soils. Deficiency common in acidic soils, dry weather, heavy rainfall areas. High soil calcium reduces boron uptake. Boron has the narrowest sufficiency range of any micronutrient.

🌿 Crop Info

Region: North India, Maharashtra
Soil: Loamy, pH 6–7
Season: Rabi

Correction Methods for Cauliflower

ProductMethodRateBest For
Boron 20% GranularSoil0.5–1 kg/acrePre-planting
Boron 20% WSPFoliar + Drip1–1.5g/L foliar, 200g/acre dripAt flowering — critical timing
Calcium Boron LiquidFoliar2.5 mL/L at floweringGrapes, tomato, capsicum

Step-by-Step Treatment Plan

  1. Confirm deficiency — Take leaf and soil samples. Send to lab or use visual diagnosis. Soil pH test critical (check at root zone depth).
  2. Immediate foliar correction — Apply Boron 20% Granular at 0.5–1 kg/acre as emergency foliar spray. Spray in morning or evening. Repeat after 7–10 days.
  3. Drip/soil correction — Apply via drip fertigation or soil for lasting correction. Single foliar application is temporary fix only.
  4. Soil amendment — If soil pH is the cause: apply gypsum to reduce pH in alkaline soils, or lime if acidic. Target pH 6–7.
  5. Prevent recurrence — Include micronutrient schedule in regular fertigation program. Soil test every season.

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