Plough 2–3 times with a country or mould board plough. Spread 12.5 t/ha of FYM or compost before the last ploughing, and apply 30 kg sulphur per hectare through gypsum at the last ploughing for higher yield. Seed rate: 10 kg/ha for varieties and 5 kg/ha for hybrids.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Castor – Preparation of the field; seed rate, p. 207
Region
Tamil Nadu
Last updated
2026-11-04
Sowing, gap filling and thinning
Sow at the recommended spacing, placing two seeds per hole 4–6 cm deep. Gap-fill on the 15th day. At 20 days, keep only one healthy seedling per hole, removing the weaker or pistillate (female-only) plant.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Castor – Sowing; gap filling, p. 209
Region
Tamil Nadu
Last updated
2026-11-04
Intercropping with small onion
Under irrigation, intercropping castor with small onion in a 1:2 ratio at 1.5 m x 1.0 m spacing is recommended.
