Model Answer

Seasonal air pollution in North India, especially in the Indo-Gangetic Plains, is closely linked with crop residue (stubble) burning in Punjab, Haryana and western Uttar Pradesh. Despite satellite monitoring, legal bans and institutional oversight, farm fires continue annually, indicating that the problem is not merely technological but deeply socio-economic and governance-related. Why Stubble Burning Persists

1. Cropping pattern and time pressure

• Paddy harvesting leaves only a 2–3 week window before wheat sowing. • Manual removal is expensive and labour-intensive. • Burning becomes the fastest and cheapest method.

2. Economic compulsion

• Residue management machines (Happy Seeder, Super SMS etc.) have high upfront costs. • Small and marginal farmers lack access to credit and custom hiring centres. • No assured market exists for crop residue.

3. Policy distortions

• MSP-driven rice procurement encourages water-intensive paddy cultivation in semi-arid Punjab-Haryana. • Ecologically unsuitable agriculture generates excess biomass residue.

Challenges in Detection and Monitoring

1. Limitations of satellite technology

• Small or short-duration fires often remain undetected. • Cloud cover, fog and smoke reduce accuracy. • Burning shifted to evening hours reduces detection frequency of polar-orbit satellites.

2. Mismatch between satellite and ground data

• Burnt area may differ from detected fire points. • False positives and false negatives complicate enforcement.

3. Enforcement constraints

• Millions of small farms make physical verification difficult. • Penalising farmers is politically sensitive. • Administrative capacity at village level remains limited.

Consequences

• Winter smog episodes in Delhi-NCR.
• Health burden: respiratory diseases and productivity losses.
• Soil nutrient loss and long-term decline in soil fertility.
• Regional diplomatic tensions among states over blame-sharing.

Comprehensive Strategy to Address the Problem

1. Technological Measures

• Improved satellite algorithms and higher temporal resolution monitoring. • Integration of satellite data with drone and ground-level verification. • Real-time dashboards for district administration.

2. Economic Incentives

• Direct cash incentives for non-burning farmers. • Expansion of custom hiring centres for residue machinery. • Development of biomass markets: bio-CNG, ethanol, compressed biogas and power generation.

3. Agricultural Reforms

• Crop diversification toward millets, pulses and oilseeds. • Rationalisation of MSP procurement policy. • Promotion of short-duration paddy varieties.

4. Institutional & Governance Measures

• Cluster-based monitoring with local nodal officers. • Cooperative federalism between Centre and states. • Community-level behavioural change campaigns rather than punitive policing.

5. Environmental Approach

• In-situ decomposition using bio-decomposers. • Carbon credit incentives for sustainable residue management. • Integration with climate mitigation policies.

Conclusion

Stubble burning is not merely a law-and-order or monitoring failure but a structural agricultural problem rooted in economics, policy incentives and regional cropping patterns. Technology can improve detection, but only a mix of economic support, crop diversification and cooperative governance can sustainably eliminate farm fires. A farmer-centric transition to sustainable agriculture is therefore essential for long-term air quality improvement in North India.