Onion Farming Guide: Thrips Control, Fertilizers & Expert Advice
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Common Problems
What's harming your onion?
Tap a problem to see the right inputs and treatment plan.
Seasonal Calendar
When to Apply What
Crop stage–wise input schedule for onion.
Sep (Rabi) / Jun (Kharif)
- Soil solarisation or Trichoderma treatment before nursery bed preparation
- Seed treatment: Thiram 3 g/kg seed
- Spray Imidacloprid at 15 days for thrips in nursery
Rabi: Oct–Nov / Kharif: Jul
- Basal dose: FYM + SSP + MOP + ZnSO₄
- Root dip in Carbendazim 0.1% before transplanting
- Apply Carbofuran 3G for onion fly at transplanting
Rabi: Jan–Feb / Kharif: Sep–Oct
- Top dressing: Urea + Potassium Chloride for bulb development
- Spray Mancozeb + Metalaxyl for downy mildew prevention
- Stop irrigation 2 weeks before harvest for skin quality
Inputs for Onion
Recommended Products
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Tazoxy, Fungicide Azoxystrobin 11% and Tebuconazole 18.3% SC
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FAQs
Onion Farming Questions
Which insecticide is best for thrips on onion?
Spinosad 45% SC (0.3 ml/L), Fipronil 5% SC (1.5 ml/L), or Emamectin Benzoate 5% SG (0.4 g/L) are the most effective for thrips on onion. Add a sticker/spreader to improve adhesion on waxy onion leaves. Spray in early morning or evening.
How to control purple blotch in onion?
Spray Mancozeb 75% WP (2 g/L) preventively, and use Tebuconazole 25.9% EC (0.5 ml/L) or Iprodione 50% WP (1.5 g/L) at first disease appearance. Avoid overhead irrigation and ensure good air circulation in the field.
What is the recommended fertilizer dose for Rabi onion?
For Rabi onion: 100 kg N + 50 kg P₂O₅ + 60 kg K₂O per hectare. Apply full P and K + 1/3 N as basal. Apply remaining N in two equal splits at 30 and 45 DAT. Supplement with Sulphur 25 kg/ha for pungency and shelf life.
Not sure what to use for Onion?
Dr. Raichand, our digital agronomist, will recommend the right inputs for your onion crop, soil, and season. Ask for free via the FarmKart app.
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