Calcium
Symptoms
Blossom-end rot: dark, sunken patches at the bottom of fruits.
Correction
Calcium nitrate through drip or foliar calcium sprays; maintain even irrigation.
Vegetables · Solanum lycopersicum
Tomato fertilizer and nutrition guide
Balanced NPK with extra calcium and potassium at fruiting for firm, uniform, well-coloured tomatoes.
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About Tomato nutrition
Tomato is one of India's most widely grown vegetables and a heavy feeder. Yield and fruit quality depend on steady nutrition through a long harvest window: phosphorus for early roots, nitrogen for canopy, and potassium, calcium and boron once flowering begins.
- Climate
- Warm season crop; grows best at about 18-27 °C. Very high temperatures cause flower drop and poor fruit set.
- Soil
- Well-drained loam to sandy loam rich in organic matter, pH around 6.0-7.0.
Stage-wise nutrient management for Tomato
What the crop needs most at each growth stage.
Transplanting & establishment
Phosphorus-rich nutrition and a basal dose of organic manure for strong root development.
Vegetative growth
Nitrogen with balanced potassium for healthy canopy; magnesium to keep leaves green.
Flowering & fruit set
Calcium and boron for flower retention and fruit set; reduce nitrogen to avoid excess foliage.
Fruit development & harvest
High potassium for fruit size, colour, firmness and shelf life; continue calcium.
Common nutrient deficiencies in Tomato
How to recognise them in the field and how they are usually corrected.
Boron
Symptoms
Flower drop, poor fruit set and cracked or misshapen fruits.
Correction
Foliar boron spray before and during flowering.
Magnesium
Symptoms
Yellowing between veins on older leaves while veins stay green.
Correction
Magnesium sulphate through drip or as a foliar spray.
Potassium
Symptoms
Leaf edges scorch; uneven ripening and blotchy fruit colour.
Correction
Potassium-rich water-soluble fertilizers during fruit development.
Need a Tomato fertilizer schedule?
Exact doses depend on your soil test, variety and irrigation. Tell us your crop stage, area and location and we will recommend the right products and quantities.
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