STRAWBERRY NUTRITION

Calcium Deficiency in Strawberry

Identify Calcium (Ca) deficiency symptoms, understand causes and apply the correct treatment for Strawberry grown in Maharashtra (Mahabaleshwar), UP, Punjab.

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🔍 Symptoms

Blossom end rot in tomato/capsicum/watermelon (dark sunken patch at fruit base). Tip burn in lettuce/cabbage. Bitter pit in apple. Fruit cracking in grapes/pomegranate/tomato. Poor cell wall formation.

🧩 Cause

Calcium moves with transpiration — deficiency occurs during high humidity, excessive N+K, water stress, or irregular irrigation. Calcium is immobile in plant tissue so young rapidly growing tissue is most affected.

🌿 Crop Info

Region: Maharashtra (Mahabaleshwar), UP, Punjab
Soil: Sandy loam, pH 5.5–6.5
Season: Oct–Feb

Correction Methods for Strawberry

ProductMethodRateBest For
Calcium NitrateDrip2–3 kg/acre/weekVegetative to fruit development
Calcium EDTA chelatedFoliar2–3g/LRapid correction, prevent BER
Calcium Chloride 77%Foliar3–5g/L post-harvestApple bitter pit, storage quality

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 Calcium Nitrate at 2–3 kg/acre/week 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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