Rabi 2025–26 Planting Calendar for South India Organic Farmers

The Rabi season in South India runs from October to February. Unlike North India, where Rabi crops depend on irrigation because there is no rain, South Karnataka receives some northeast monsoon rainfall in October–November. This makes Rabi timing here unique — you are working with residual soil moisture, occasional rains, and reliable dry months from December onward.

October — Transition from Kharif

October is a transition month. Kharif harvests are finishing, fields need to be cleared, and Rabi soil preparation begins immediately. Every week of delay in October costs roughly 5–7% of Rabi yield potential.

Soil preparation after Kharif harvest: As each Kharif crop is harvested, apply 200 litres of jeevamrutha per acre as a soil drench. This replenishes the soil biology stressed by the growing season. Then apply 1–2 tonnes of compost or FYM and let it sit on the surface for 7–10 days before any tillage.

Chickpea (chana) nursery and sowing: In October 15–31, sow chickpea directly. This is the most important Rabi legume in the region. Use desi varieties (Annigeri or JG-11 for Mandya conditions). Spacing 30 cm x 10 cm. Bijamrutha seed treatment is essential — chickpea is susceptible to collar rot if seeds are untreated.

Mustard: Sow October 20 – November 5 in well-drained red soils. Mustard is a fast crop (90–100 days) and produces good oil yields on organic farms. It also acts as a trap crop for aphids, protecting neighbouring vegetables.

November — Primary Rabi Sowing Window

November is the most active Rabi planting month in South Karnataka. Temperatures are cooling (day: 28–32°C, night: 15–18°C), which most Rabi crops prefer.

Wheat (in suitable zones): Mandya district is at the margin of wheat-growing territory. Wheat does grow here but yields are lower than in the Deccan plateau zone. If you have black cotton soil or deep red soil with good water-holding capacity, sow wheat November 1–15. Spacing 22 cm row-to-row, broadcast or drill. Apply jeevamrutha at sowing and again at the 21-day stage. Expected yield on organic farms in first transition year: 8–10 quintals per acre. By year three of ZBNF, farmers in our collective report 12–15 quintals.

Coriander (main crop): November 1–20 is the ideal window. Sow thickly and thin to 10 cm spacing after germination. Coriander needs cool nights to develop good aroma — November–December night temperatures in Mandya (14–17°C) are ideal. Apply jeevamrutha foliar spray at 21 days and 42 days for best leaf yield.

Vegetables — main plantings:

• Tomato: Transplant October-sown nursery in November 1–15. Spacing 60 cm x 45 cm.
• Brinjal: Transplant November 1–20. Spacing 60 cm x 60 cm.
• Chilli: Transplant November 1–30. Spacing 45 cm x 30 cm.
• Cabbage and cauliflower: Transplant November 10 – December 5. These are frost-tolerant and do well in cool December–January conditions.
• Onion: Transplant November 15 – December 15. Mandya red onion is prized in the market — organic premium is real here.

Fenugreek (methi): Direct sow November 1–30 for leaf harvest in 30–35 days. Fast cash crop.

December — Establishment and Care

December in South Karnataka is dry and cool. Rainfall is rare after the northeast monsoon exits (typically by December 5–10). From this point, irrigation is essential for all Rabi crops.

Irrigation planning for December–February:

• Chickpea: 2 irrigations total — at flowering (55–60 days) and pod fill (75–80 days). Chickpea is drought-tolerant but these two stages are critical.
• Wheat: 4–5 irrigations — crown root initiation (21 days), tillering (40 days), jointing (60 days), grain fill (85 days), and dough stage (100 days).
• Tomato, chilli, brinjal: Weekly irrigation in December. Every 5 days in January when temperatures rise.
• Onion: Every 7–8 days. Stop irrigation 15 days before harvest (February) to improve shelf life.

Frost risk zones: In South Karnataka, frost is uncommon but not absent. Elevations above 800 m (parts of H.D. Kote, Chamrajnagar, and eastern Mysuru) can see frost in January. Warning signs: clear skies, no wind, temperatures dropping below 8°C at night. Protect tomato, chilli, and brinjal with jute covers or smoke small fires at field edges if frost is forecast.

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January — Mid-Season Management

January is the highest-value month for marketing Rabi vegetables. Tomato, onion, and coriander prices typically peak in January–February as supplies tighten.

Pest and disease watch:

• Powdery mildew on peas and coriander: Apply diluted buttermilk spray (1 part curd whey to 9 parts water) at first sign. Works well on organic farms.
• Aphids on mustard: Leave them — they attract ladybird beetles and parasitic wasps that will control them naturally within 10 days. Intervene only if more than 20% of stems are colonised.
• Tomato fruit borer: Pheromone traps from January onward. Neem oil spray at 5 ml per litre as preventive if borer moth numbers exceed 5 per trap per week.

Soil moisture top-up: Jeevamrutha application continues monthly through Rabi. January application is particularly important as cool temperatures slow natural biological activity — the microbial input from jeevamrutha keeps soil biology active through the cool months.

February — Final Harvests and Summer Prep

By late February, most Rabi crops are at harvest stage. Chickpea is harvested February 15 – March 15. Wheat in late February to mid-March. Vegetables continue yielding through February.

Pre-summer soil preparation: After each crop is harvested, immediately cover the soil. Options include mulching with dry straw (5 cm layer), sowing a quick green manure (sunhemp germinates even in February heat), or keeping the previous crop residue in place. Bare soil in March–April loses 60% of its surface moisture within 3 weeks.

Quick Reference Table

Crop	Sow / Transplant	Irrigation Frequency	Harvest
Chickpea	Oct 15–31	Twice (flowering, pod fill)	Feb–Mar
Mustard	Oct 20 – Nov 5	Once or twice	Jan–Feb
Wheat	Nov 1–15	4–5 times	Feb–Mar
Coriander	Nov 1–20	Weekly until Dec, then fortnightly	Jan–Feb
Tomato	Nov 1–15 transplant	Weekly	Jan–Mar
Onion	Nov 15 – Dec 15 transplant	Every 7–8 days	Feb–Mar

Rabi is the season where careful planning pays the most. The dry months are predictable — unlike the monsoon. Use that predictability to schedule inputs, irrigations, and market deliveries with precision.