Capsicum — particularly colour varieties (red, yellow, orange) — is one of the highest-value crops in Indian polyhouse farming. With an 8–10 month crop cycle and strong market demand from urban retail, hotels, and export, it is a staple for commercial hydroponic growers.
This guide covers substrate selection, EC and pH management through the long crop cycle, and the most common problems capsicum growers face.
Commercial capsicum production is concentrated in Maharashtra (Nashik, Pune), Gujarat, Karnataka, and Andhra Pradesh. The polyhouse drip growbag system dominates — giving growers year-round production and the ability to grow premium colour varieties that command strong market prices.
Capsicum has one of the longest crop cycles of any commercial vegetable — 8 to 10 months in a single polyhouse setup. The substrate must support healthy roots through this entire period. Substrate quality at the start of the season determines yield quality in the final months.
| Crop type | Annual fruiting vegetable — 8–10 month commercial crop |
|---|---|
| Crop cycle | 8–10 months |
| Growing system | Drip growbag system — 100×15×14 or 100×18×15 cm |
| Growing regions | Maharashtra, Gujarat, Karnataka, Andhra Pradesh, Rajasthan, Haryana |
| Season | Year-round production under polyhouse |
| Farm types | Small and large commercial polyhouse operations |
Capsicum needs a substrate that balances moisture retention with good aeration — and maintains that balance over 8–10 months. Pure coco peat (100%) compacts over time in long crops. RootPrime (70:30) with husk chips provides the structural stability needed for a full-season crop.
| Recommended blend | Kultyv RootPrime (70:30 coco to chips) — balanced blend |
|---|---|
| Growbag size | 100×18×15 cm (preferred) or 100×15×14 cm for higher density |
| Wash grade | Semi Washed — EC 1.0–1.5 mS/cm (capsicum tolerates moderate EC) |
| Substrate EC target | 1.0–1.5 mS/cm at planting |
| Alternative | 8L open-top planter bag for smaller setups |
🔗 Kultyv RootPrime — Balanced blend for vegetables — 70:30 coco to chips — structural stability for long crops
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🔗 Kultyv Capsicum Growbag 100×18×15 cm — Wider growbag for larger root volume
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Step 1. Place RootPrime blocks in the growbag — do not compact.
Step 2. Rehydrate with clean water (EC adjusted to 1.0–1.5 mS/cm, pH 5.8–6.2) — approximately 3–4 litres per kg.
Step 3. Allow 15–20 minutes for full rehydration.
Step 4. Check substrate EC — target 1.0–1.5 mS/cm for semi-washed grade.
Step 5. Check pH — target 5.8–6.2. Adjust with pH-up or pH-down.
Step 6. Pre-buffer with Cal-Mag (2 mL/L) — soak 30 minutes, drain. Plant once EC and pH are stable.
✓ Use the 100×18×15 cm growbag for colour capsicum — more root volume supports the long fruiting season.
✓ Semi-washed grade is appropriate for capsicum and more economical for large-scale operations.
✓ Do not compact substrate when filling — RootPrime needs its physical structure intact for AFP performance over 8–10 months.
Capsicum EC management changes across its long crop cycle. Vegetative growth needs lower EC; fruiting requires higher EC to concentrate sugars and develop flavour. pH must stay consistent around 5.8–6.2 for calcium and magnesium availability throughout.
| Growth Stage | Target EC | Target pH | Notes |
|---|---|---|---|
| Seedling (0–4 weeks) | 1.0–1.5 | 5.8–6.0 | Low EC at establishment |
| Vegetative growth | 1.8–2.5 | 5.8–6.2 | Increase as plant develops |
| Flowering | 2.0–2.5 | 5.8–6.0 | Consistent EC — avoid fluctuation |
| Fruiting (colour development) | 2.5–3.0 | 5.8–6.2 | Higher EC for flavour and colour |
✓ Do not rush EC increases — raise by 0.2–0.3 mS/cm per week maximum.
✓ Monitor leachate EC weekly — target leachate EC 0.3–0.5 above irrigation EC.
✓ In summer, reduce EC by 0.3–0.5 mS/cm — plants take up more water in heat, concentrating salts.
🔗 Free EC & pH Suggester Tool — Enter your crop and stage — get your exact targets
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These are the most common issues capsicum growers face when using coco peat substrate — and how to address them.
Cause: Sudden EC fluctuation, heat stress, or moisture inconsistency during flowering causing flower abortion.
Fix: Maintain steady EC during flowering. Increase irrigation frequency in hot weather. Ensure substrate never dries completely between irrigations.
Cause: Pure coco peat compacting after 6–7 months, reducing AFP and causing root stress in the second half of the crop.
Fix: RootPrime (70:30) resists compaction much better than 100% coco. If already planted in pure coco, increase irrigation frequency to compensate for reduced drainage.
Cause: Calcium deficiency caused by inconsistent moisture or high EC blocking calcium uptake.
Fix: Maintain steady irrigation and pH 5.8–6.2. Add Cal-Mag to nutrition program. Check for localised dry spots in the growbag.
✓ Capsicum is a long-season crop — invest in good quality substrate at the start. It pays back over 8–10 months.
✓ Use one drip emitter per plant within the growbag for even moisture distribution.
✓ Flush growbags with clean water once every 3–4 weeks to prevent salt accumulation.
✓ Keep polyhouse temperature below 35°C during flowering — heat causes flower drop regardless of substrate quality.
✓ Train plants to 2 main stems using Dutch V-cord training for maximum yield and air circulation.
Talk to our team — we will recommend the right Kultyv blend and growbag size for your polyhouse setup and capsicum variety.
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