Best Fertilizer for Chilli in India
Chilli is a long duration vegetable harvested over many pickings, so it needs a steady, sustained nutrient supply rather than one heavy feed. The crop builds a strong vegetative frame first,
Overview
Chilli is a long duration vegetable harvested over many pickings, so it needs a steady, sustained nutrient supply rather than one heavy feed. The crop builds a strong vegetative frame first, then flowers and sets fruit repeatedly over weeks, which means nitrogen, phosphorus and potassium must all stay available right through the harvest window. Too much nitrogen, especially early, gives lush plants that flower poorly and drop fruit, while balanced potassium supports flowering, fruit set and the colour and pungency of dry chilli. Calcium and boron matter for fruit set and to avoid flower drop and fruit problems. Splitting the dose and, where possible, using fertigation gives far better results than a single application. Use the ranges below as a guide, adjust to your Soil Health Card or a soil test, and confirm local rates with your nearest KVK.
Recommended NPK dose for Chilli
A common ICAR style recommendation for chilli is about 100 to 120 kg N, 40 to 60 kg P2O5 and 40 to 60 kg K2O per hectare, which is roughly 40 to 48 kg N, 16 to 24 kg P2O5 and 16 to 24 kg K2O per acre, along with around 20 tonnes of FYM per hectare. Hybrids grown under drip fertigation are fed much harder, sometimes around 150 to 180 kg N, 60 to 120 kg P2O5 and 100 to 180 kg K2O per hectare, delivered in many small doses through the season. The wide spread reflects how variety, irrigation and management change the need. Use these as starting ranges and let your Soil Health Card or a soil test set the real dose, cutting back any nutrient your soil already supplies, and confirm with your local KVK.
Application schedule
Apply the full phosphorus, the full potash and about one third to half of the nitrogen as a basal dose at or just after transplanting, around 10 to 15 days. Give the remaining nitrogen as top dressing in two or more splits spread across the vegetative and flowering stages, so the long duration crop never runs short. Under drip, fertigation is ideal because chilli responds very well to small frequent doses, with a gentle shift toward more potassium as flowering and fruiting build, supporting fruit set and dry chilli quality. If you irrigate by furrow, band the top dressing beside the rows and follow with water. Keep some nutrition going through the picking period, since the crop keeps flowering and fruiting over many weeks.
Organic & bio-fertilizers
Mix about 20 to 25 tonnes of well rotted farmyard manure per hectare, roughly 8 to 10 tonnes per acre, into the soil during land preparation, or use around 5 tonnes of vermicompost per hectare. Organic matter steadies the nutrient and moisture supply that a long duration crop like chilli needs across many weeks of flowering and picking, and it supports the root health that reduces flower drop. Apply biofertilizers such as Azotobacter or Azospirillum for nitrogen and a phosphate solubilising bacterium for phosphorus, either as a seedling root dip or mixed into the manure, and add Trichoderma to help suppress wilt and root diseases that are common in chilli. These inputs let you trim the chemical dose and build lasting fertility, but they do not fully replace it for a heavy, long season feeder.
Micronutrients & deficiency signs
Calcium and boron together drive good fruit set and reduce the flower drop and fruit deformities common in chilli. Boron deficiency shows as flower drop, poor fruit set and brittle, deformed fruit, corrected with a careful foliar spray of borax at about 0.1 to 0.2 percent, since boron turns toxic if overdone. Calcium can be supported through the soil and, in deficient situations, a foliar calcium spray during fruiting. Zinc deficiency appears as small, narrow upper leaves with pale areas between the veins and stunted growth, corrected with zinc sulphate in the soil or a 0.5 percent foliar spray. Iron shows as yellowing of young leaves on alkaline soils. Apply any micronutrient only on the basis of a soil test or a clearly identified symptom, and keep doses light.
Tips & cautions
Do not overdose nitrogen, especially early, because lush plants flower poorly and drop fruit, and dense canopies hold disease. Split nitrogen across the season so a long duration crop with many pickings never runs short. Keep potassium adequate through flowering and fruiting for better fruit set, colour and pungency. If you have drip, fertigate in small frequent doses for the best efficiency and the steadiest fruit set. Watch for flower drop, which often signals boron or calcium need or moisture stress, and correct gently rather than with heavy doses. Keep watering even, since swings in moisture worsen flower and fruit drop. Apply micronutrients only on test or symptom, and build organic matter every season for steadier nutrition.
These are general recommendations. For the exact dose, follow your Soil Health Card / soil test and local KVK, and avoid over-applying urea.
FAQs
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