India has the world's largest area under paddy cultivation — about 45 million hectares — and rice accounts for roughly 40% of the country's agricultural water use. This water-intensive pattern has triggered groundwater depletion, methane emissions, and soil degradation in the rice bowls of Punjab, Haryana, Uttar Pradesh, Telangana, Andhra Pradesh, Tamil Nadu, and West Bengal. Against this background, the System of Rice Intensification (SRI) offers a climate-smart pathway to produce more rice with less water, fewer external inputs, and improved resilience.
Background: What is SRI?
The System of Rice Intensification (SRI) is a set of agronomic practices for increasing the productivity of irrigated rice. It was developed in Madagascar in the 1980s by Father Henri de Laulanié and popularised globally by Cornell University's SRI-Rice programme. SRI is a low-water, low-input, knowledge-intensive method that uses younger seedlings, wider spacing, and intermittent irrigation rather than continuous flooding.
SRI practices have been successfully adapted to upland rice and other crops such as wheat, finger millet, sugarcane, and pulses under the umbrella of System of Crop Intensification (SCI).
Difference Between SRI and Conventional Methods
| Parameter | Conventional Rice Management | SRI Method |
|---|---|---|
| Seed rate | 50-60 kg/ha | 5-8 kg/ha |
| Seedling age at transplanting | 25-30 days | 8-12 days |
| Spacing | Random, dense | Wide, square (25 x 25 cm) |
| Water management | Continuous flooding | Alternate wetting and drying; moist, not flooded |
| Fertiliser management | Heavy chemical use | Organic manure, compost, FYM |
| Weed management | Manual/chemical | Mechanical (cono-weeder) aerates soil |
| Pest / disease incidence | Higher | Lower |
| Methane emission | High | Substantially reduced |
Benefits of SRI
- Water savings of 30-50% compared to flooded paddy.
- Yield increase of 20-50% with healthier root systems and tillering.
- Potential to double income by cutting input costs and raising productivity.
- Suited to small and marginal farmers who make up over 83% of Indian farmers.
- Greater tolerance to abiotic stresses (drought, heat, waterlogging) and biotic stresses (pests, diseases).
- Environment-friendly: Lower methane emissions, better soil fertility, less agrochemical residue.
- Applicable to other crops: Wheat, finger millet, sugarcane, pulses, and vegetables (as SCI).
Constraints in SRI Adoption
- Labour intensity at transplanting and weeding phases.
- Knowledge-intensive: Needs skilled extension and training.
- Water control: Canal-irrigated areas may not allow intermittent irrigation.
- Risk aversion: Small farmers hesitant to experiment.
- Limited policy push compared with conventional paddy procurement incentives.
Strategies for Scaling SRI in India
Convert at least 25% of current rice area to SRI as recommended by the "More Rice with Less Water" report.
Integrate SRI with flagship schemes: PMKSY — Per Drop More Crop, Rashtriya Krishi Vikas Yojana (RKVY), National Mission on Sustainable Agriculture (NMSA), and National Mission on Natural Farming (NMNF).
Demonstrations through KVKs, FPOs, and SHGs with women farmer champions.
Custom hiring centres for cono-weeders, markers, and transplanters to reduce labour burden.
MSP-plus incentives for SRI paddy with lower water and input use.
Align with sustainability standards (Fairtrade, Sustainable Rice Platform) for premium export markets.
Related Approaches: Direct Seeded Rice (DSR), Wet DSR, and AWD
- Direct Seeded Rice (DSR) avoids transplanting and puddling altogether — saves water, reduces labour, and lowers methane.
- Alternate Wetting and Drying (AWD) is widely adopted in Punjab and Haryana with measurable water savings.
- Conservation agriculture combined with crop diversification out of paddy is being tested in Happy Seeder / Super Seeder ecosystems.
Latest Developments (2024-26)
Updated context: The Union Budget 2024-25 and 2025-26 have emphasised climate-smart agriculture and Mission for Aatmanirbharta in Oilseeds and Pulses, encouraging crop diversification away from water-intensive paddy in over-exploited regions. The Per Drop More Crop (PDMC) component of PMKSY continues to support micro-irrigation and SRI-style water-saving practices.
Punjab and Haryana have expanded incentive-linked DSR programmes, paying farmers Rs 1,500-4,000/acre for adopting DSR. ICAR released improved, lodging-resistant rice varieties suited to direct seeding and SRI. Bihar, Tamil Nadu, Tripura, and Andhra Pradesh scaled up SRI under RKVY and state-funded missions.
Global carbon markets now recognise methane reductions from AWD/SRI paddy as generating verifiable carbon credits — an emerging revenue stream for Indian farmers and FPOs. The Green Credit Programme under LiFE (Lifestyle for Environment) includes water stewardship credits that could incorporate SRI practices.
Key Schemes and Institutions
| Scheme / Institution | Role |
|---|---|
| PMKSY — Per Drop More Crop | Micro-irrigation, water-saving |
| National Mission on Sustainable Agriculture | Climate-resilient practices |
| ICAR — IRRI collaboration | R&D for SRI and DSR |
| State SRI missions (Bihar, Tripura, TN) | State-led scale-up |
| NMNF | Natural farming convergence |
UPSC Relevance
GS Paper III topics directly connected: major crops, cropping patterns, issues related to subsidies and MSP; environmental impact of agriculture; water conservation; food security.
Possible questions:
- Discuss the System of Rice Intensification (SRI) as a strategy for water-efficient and climate-resilient agriculture in India.
- Examine the reasons for the limited adoption of SRI in India despite its proven benefits. Suggest measures.
- "SRI embodies the principles of doing more with less." Evaluate in the context of Indian paddy cultivation.
Essay and interview angles include water-food-energy nexus, climate change adaptation, and the role of knowledge-intensive agronomy. Aspirants should remember SRI water and yield figures, pilots in Bihar and Tripura, and links with DSR/AWD.
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