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June 1
Monsoon Arrives (Coast)
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25 mm
Minimum Rain Before Sowing
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Sept
Critical Flowering Stage
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Monsoon Overview — Karnataka 2026
Karnataka receives around 75–80% of its annual rainfall from the Southwest Monsoon (June–September). Farming decisions made in the first two weeks of June determine the entire kharif season's success. Sow too early and seedlings die in a dry spell. Sow too late and flowering hits the post-monsoon drought.
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Normal Onset: Southwest Monsoon reaches Karnataka's coast (Mangaluru) around June 1st, Bengaluru around June 10th, and North Karnataka (Kalaburagi, Vijayapura) by June 20–25th. Always wait for at least 25mm of rain over 2–3 consecutive days before sowing.
Karnataka's diversity means no single strategy fits all districts. A farmer in Kodagu harvests coffee amid 2,500mm rain, while one in Kalaburagi coaxes tur out of barely 600mm. Know your zone first.
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4 Agro-Climatic Zones of Karnataka
Know your zone — each has its own rainfall pattern, soil type, and ideal crops:
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Coastal Zone
☔ 2500–3500 mm/yr
Paddy, Coconut, Arecanut, Banana, Pepper
Dakshina Kannada, Udupi, Uttara Kannada (coast)
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Malnad / Hilly
☔ 1500–2500 mm/yr
Paddy, Coffee, Cardamom, Ragi, Maize
Shivamogga, Chikkamagaluru, Hassan, Kodagu
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Southern Dry Zone
☔ 700–900 mm/yr
Ragi, Groundnut, Sunflower, Maize, Mulberry
Bengaluru Rural, Tumakuru, Mysuru, Mandya, Ramanagara
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Northern Dry Zone
☔ 500–750 mm/yr
Jowar, Cotton, Tur (Pigeon Pea), Sunflower, Chickpea
Kalaburagi, Vijayapura, Bidar, Yadgir, Raichur, Koppal
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Common Mistake: Farmers in the Southern Dry Zone often sow paddy expecting good rains — but this zone rarely gets enough water for paddy without irrigation. Ragi and groundnut are far more reliable choices for rainfed farming here.
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Month-by-Month Action Plan (June – October)
Follow this timeline to stay ahead of the monsoon at every stage:
🛠️ Pre-Monsoon Preparation
Deep plough fields (at least 20 cm). Apply FYM / compost (5–8 tonnes/acre). Repair bunds and drainage channels. Procure certified seeds early — shortage hits every June.
Soil prep
Seed procurement
Bund repair
🌱 Coastal & Malnad: Sowing Begins
Paddy nursery preparation (coastal). Coffee nurseries need shading. Transplant arecanut seedlings. Sow maize and ragi in Shivamogga/Hassan after 25mm+ rain.
Paddy nursery
Maize
Ragi
🌾 Dry Zone: Main Sowing Window
Bengaluru Rural, Tumakuru, Mysuru: sow ragi, groundnut, sunflower. Belagavi / Dharwad: sow soybean, maize, cotton. Use seed treatment (Thiram 3g/kg) to prevent damping off.
Ragi
Groundnut
Soybean
Cotton
🚿 Paddy Transplanting & Fertiliser
Coastal / Malnad: transplant paddy (21–25 day old seedlings, 2–3 per hill). Apply basal DAP + MOP at transplanting. North Karnataka: last chance to sow jowar and tur.
Paddy transplant
Jowar
Tur / Arhar
🌿 Weeding, Top Dressing & Pest Watch
First weeding for all crops (20–25 days after sowing). Top dress urea for ragi and maize. Scout for stem borer in paddy and maize. Apply neem-based spray as first line of defence.
Weeding
Top dress urea
Pest scouting
🌸 Flowering Stage — Critical Care
Avoid water stress during flowering in ragi, maize, groundnut — a 7-day dry spell reduces yield by 30–40%. If rain fails, provide one life-saving irrigation. Scout for blight and blast in paddy.
Life-saving irrigation
Disease watch
🌾 Harvest & Rabi Preparation
Ragi & groundnut harvest begins. Dry paddy stalks properly before threshing. Retain crop residue to build soil organic matter. Start rabi bed preparation — sunflower, chickpea, wheat in irrigated areas.
Harvest
Rabi prep
Chickpea
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Best Crops by District
Match your district to the right kharif crop for the best yield with least risk:
| District / Region |
Main Crops |
Rainfall |
Key Tip |
| Dakshina Kannada / Udupi |
Paddy, Coconut, Arecanut, Pepper |
3000mm+ |
Drain excess water quickly; bund height matters. |
| Shivamogga / Hassan / Chikkamagaluru |
Paddy, Maize, Ragi, Coffee |
1500–2000mm |
Sow maize by June 20 for best yield. |
| Bengaluru Rural / Tumakuru / Ramanagara |
Ragi, Groundnut, Sunflower, Mulberry |
700–900mm |
Ragi is the safest choice — drought tolerant. |
| Mysuru / Mandya / Chamarajanagar |
Sugarcane, Paddy (irrigated), Ragi, Maize |
750–900mm |
Sugarcane relies on Cauvery irrigation — plan water sharing. |
| Belagavi / Dharwad / Gadag |
Soybean, Maize, Cotton, Sunflower |
600–800mm |
Soybean responds very well here — use improved varieties. |
| Kalaburagi / Vijayapura / Yadgir / Raichur |
Tur, Jowar, Cotton, Chickpea (rabi) |
500–650mm |
Tur (pigeon pea) is most reliable — 160-day variety for this zone. |
| Bidar / Ballari / Koppal |
Tur, Sunflower, Cotton, Jowar |
550–700mm |
Intercrop tur + jowar to hedge against dry spells. |
| Kodagu (Coorg) |
Coffee, Paddy, Cardamom, Black Pepper |
2000–2500mm |
Coffee berry borer peaks in Aug–Sep — monitor closely. |
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Pro Tip — Ragi for Dry Zones: Ragi (finger millet) is Karnataka's most drought-resilient crop. Varieties like GPU-28 and MR-6 yield 12–15 quintals/acre with just 500mm of well-distributed rain. Always the safest bet when forecast is uncertain.
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Monsoon Farming Tips — Karnataka Specific
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Rainwater Harvesting
Build farm ponds before monsoon to capture runoff. Even a 10×10 metre pond at 2m depth stores enough for one life-saving irrigation over 1 acre.
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Seed Treatment
Treat all seeds with Trichoderma (4g/kg) + Rhizobium (for legumes). This alone prevents 60% of early seedling loss from soil-borne diseases.
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Contour Bunding
In hilly areas (Malnad, Kodagu), contour bunds reduce soil erosion by up to 70% during heavy July–August rains. Repair before June 1st every year.
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Check Forecast Daily
Karnataka IMD issues district-level forecasts. Use KrashiMitra's weather tab — never spray pesticides 24hr before predicted heavy rain.
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Green Manure Crops
Sow Dhaincha or Sunhemp in June as green manure. Incorporate into soil before flowering (45–50 days). Adds 60–80 kg N/acre naturally.
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Intercropping
Intercrop ragi + tur or maize + soybean (4:1 rows). Reduces risk, adds nitrogen, and often earns more than mono-cropping in dry zones.
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Avoid This: Do not sow paddy in the Southern Dry Zone (Tumakuru, Bengaluru Rural, Kolar) without assured irrigation. A failed paddy crop in a drought year can wipe out the entire season's investment. Ragi or groundnut carry far less risk.
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Key Takeaways — Remember These
✅ Key Points for Your Farm
- Sow only after 25mm+ rain in 2–3 consecutive days — not by calendar date
- Monsoon reaches coast (June 1) → Bengaluru (June 10) → North Karnataka (June 20–25)
- Ragi (GPU-28 / MR-6) is the safest rainfed crop for dry zones — 500mm is enough
- Coastal / Malnad farmers: paddy nursery ready by June 1, transplant by July 10
- North Karnataka: tur + jowar intercropping hedges against erratic rain
- Build farm pond and repair bunds before monsoon — not after first rain
- September flowering stage is critical — one dry week costs 30–40% yield
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Frequently Asked Questions
1When should I sow ragi in Bengaluru Rural?
Sow after receiving 25mm rain over 2–3 consecutive days, typically between June 15–30. Never sow before the monsoon establishes.
2Can I grow paddy in Tumakuru without irrigation?
Not recommended. Tumakuru gets only 750–850mm/year and paddy needs 1200mm+. Ragi is the safe, profitable choice in rainfed Tumakuru.
3What is the best variety of ragi for dry zones?
GPU-28 and MR-6 are the most recommended drought-tolerant ragi varieties. Consult your local KVK for the latest variety approved for your district.
4How do I get district-level monsoon forecasts?
Use KrashiMitra's Weather Tab for daily district-level IMD forecasts. Karnataka State Natural Disaster Monitoring Centre (KSNDMC) also provides block-level alerts.
5When does monsoon usually fail in North Karnataka?
August–September breaks (dry spells 10–15 days) are common in Kalaburagi, Vijayapura, and Raichur. Always choose short-duration tur (160-day varieties) to avoid post-monsoon failure.
6Is intercropping better than mono-cropping during uncertain monsoons?
Yes. Ragi + tur or maize + soybean intercropping at 4:1 rows spreads risk, adds soil nitrogen, and typically earns 15–20% more than mono-cropping when rain is erratic.
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KrashiMitra.in — Your Trusted Farming Companion
District weather forecasts, mandi prices, crop disease help, and govt scheme updates — all in Kannada or English, free.
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