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Subject: Environment

  • ‘Kundi’ Traditional Water Harvesting

    Why in the News?

    With summers nearing, the arid and semi-arid regions of Rajasthan particularly in Churu, Jaisalmer, and Barmer districts largely rely on ‘Kundi’ system of traditional rainwater harvesting.

    kundi

    What is Kundi System?

    • Found in Churu, Rajasthan, kundis (or kunds) are traditional rainwater harvesting structures designed for storing drinking water.
    • A circular or rectangular pit, often lined with bricks or stones, is dug into the ground.
    • Rainwater is collected through sloped catchments and funneled into the kundi for storage.
    • A lid or stone slab covers the pit to prevent contamination and evaporation.
    • These structures help communities survive in regions with scarce groundwater and unpredictable rainfall.

    Other Traditional Water Harvesting Systems in India

    Khadin (Rajasthan) Earthen embankment (bund) built across slopes to retain surface runoff for moisture conservation and groundwater recharge, used since the 15th century.
    Johads (Rajasthan, Haryana) Small crescent-shaped embankments that store rainwater, recharge groundwater, prevent runoff, and improve water availability.
    Baolis / Stepwells (Rajasthan, Gujarat, Delhi, MP) Deep stepwells with stairs leading to groundwater storage, used for drinking, irrigation, and bathing; famous examples include Rani ki Vav (UNESCO site) and Agrasen ki Baoli.
    Virdas (Gujarat – Kutch region) Shallow wells dug in depressions to separate fresh rainwater from saline groundwater, used by Maldhari pastoralists for drinking and livestock.
    Tankas (Rajasthan, Gujarat) Circular underground tanks built in homes and temples for storing rainwater; lined with lime for purification, found in Bikaner, Jaisalmer, and Dwarka.
    Zabo (Nagaland) Terraced ponds built on hill slopes to collect rainwater for drinking, irrigation, and livestock, preventing soil erosion and increasing groundwater recharge.
    Kuls (Himachal Pradesh, Uttarakhand, J&K) Small channels (kuls) diverting glacial meltwater to fields for irrigation, made of stones, wood, and mud, and managed by local communities.
    Ahar-Pyne (Bihar, Jharkhand) Ancient system from the Mauryan period, where reservoirs (Ahar) collect rainwater, and channels (Pyne) distribute it for paddy cultivation.
    Eri (Tamil Nadu) Interconnected chain of tanks developed during the Chola period for irrigation, groundwater recharge, and flood control, still supporting agriculture.
    Surangam (Kerala, Karnataka) Horizontal tunnels dug into hillsides to extract water from aquifers, similar to Iran’s Qanat system, common in Malabar and Kasargod.
    Phad Irrigation (Maharashtra) Community-managed canal irrigation system drawing water from rivers, used in drought-prone areas, managed by a village council (patkari system).

     

    [UPSC 2016] With reference to the economic history of medieval India, the term ‘Araghatta refers to:

    (a) Bonded labour

    (b) Land grants made to military officers

    (c) Waterwheel used in the irrigation of land

    (d)  Wasteland converted to cultivated land

     

  • Species in news: Doomsday Fish

    Why in the News?

    Recent sightings of the rare oarfish, also known as the “Doomsday Fish,” near the shores of Baja California Sur, Mexico, have sparked speculation and social media frenzy.

    About the ‘Doomsday Fish’

    • Japanese Folklore calls the oarfish “Ryugu no tsukai” or “Sea God’s Palace Messenger” and believes its rare appearance signals an impending natural calamity.
    • The belief gained strength in 2011 when multiple oarfish washed ashore in Japan just before the Tohoku earthquake and tsunami (9.0 magnitude).
    • Some cultures also consider the oarfish a messenger of the deep, warning humans of major disturbances in the ocean.

    Popular Legends

    • Some scientists suggest that deep-sea fishlike oarfish may be sensitive to underwater vibrations from fault lines and could surface before an earthquake.
      • However, no conclusive scientific evidence supports this theory.
    • Powerful ocean currents, storms, or underwater disturbances may push weakened or dying oarfish toward the surface.
    • The El Niño phenomenon or changes in water temperature might also affect their movements.
    • A 2019 study in the Bulletin of the Seismological Society of America found no relationship between oarfish sightings and earthquakes in Japan.

    PYQ:

    [2017] Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences?

    1. Pollination of some plants could be adversely affected.

    2. There could be a drastic increase in the fungal infections of some cultivated plants.

    3. It could lead to a fall in the population of some species of wasps, spiders and birds.

    Select the correct answer using the code given below:

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

     

  • [27th February 2025] The Hindu Op-ed: Coal power is costing India up to 10% of its rice and wheat crops

    PYQ Relevance:

    Q) “In spite of adverse environmental impact, coal mining is still inevitable for Development”. Discuss. (UPSC CSE 2017)

     

    Mentor’s Comment: UPSC mains have always focused on the diverse environmental impact of coal  (2017), and environmental impacts of coal-fired thermal plants(2014).

    India relies on coal for 65% of its electricity due to its low cost and large reserves. Coal-fired power plants release harmful gases like CO₂, SOx, NOx, and particulate matter, causing pollution and climate issues. Using Low NOx Burners with Over Fire Air technology can reduce NOx emissions by 45-80% without affecting power generation.

    Today’s editorial discusses pollution caused by coal-fired power plants in India. This information is relevant for GS Paper 3 in the UPSC Mains exam.

    _

    Let’s learn!

    Why in the News?

    New research from Stanford University in the US shows that coal-fired power plants are reducing India’s rice and wheat production, causing up to a 10% loss in several states.

    Why did the researchers focus on nitrogen dioxide (NO₂) emissions? 

    • Phytotoxic Effects on Crops: NO₂ is phytotoxic, meaning it directly harms plant health by interfering with cellular functions and enzymatic activities. Example: In agricultural areas near coal plants, NO₂ exposure leads to lower chlorophyll levels, reducing plant vitality and yield.
    • Formation of Secondary Pollutants: NO₂ contributes to the formation of ground-level ozone, which further damages crops by limiting photosynthesis and causing oxidative stress. Example: Increased ozone formation near coal hubs like Chhattisgarh exacerbates crop loss during peak growing seasons.
    • Limited Existing Research in India: While global studies link NO₂ to agricultural damage, there was no systematic study at the power-plant level in India. Example: This research fills the gap by connecting NO₂ emissions from coal plants directly to wheat and rice yield losses.
    • Satellite Data Availability: Advanced satellites like TROPOMI allow precise tracking of NO₂ concentrations, making it easier to study the pollutant’s widespread effects. Example: Researchers used satellite-derived vegetation indices (NIRv) to measure crop health across polluted regions.
    • High Contribution from Coal Plants: Coal-fired power plants are a major source of NO₂ emissions, especially in industrial and agricultural belts. Example: In Chhattisgarh, around 19% of monsoon-season NO₂ comes from coal plants, causing significant crop damage.

    How does this pollutant impact plant health and crop yield?

    • Disruption of Photosynthesis: NO₂ reduces the amount of sunlight available for photosynthesis by forming secondary pollutants like particulate matter. This limits energy production in plants. Example: In areas near coal plants, reduced sunlight exposure leads to a 5-10% decline in rice and wheat yields in states like West Bengal and Madhya Pradesh.
    • Cellular and Enzymatic Damage: NO₂ interferes with crucial cellular processes and enzymatic functions, weakening plant growth and reducing their ability to absorb nutrients. Example: Crops exposed to high NO₂ levels in Chhattisgarh show slower growth and lower productivity, especially during peak seasons.
    • Ozone Formation and Oxidative Stress: NO₂ contributes to ground-level ozone, which causes oxidative stress in plants, leading to leaf damage and reduced crop yields. Example: In Uttar Pradesh, where overall NO₂ levels are high, wheat crops suffer significant losses due to ozone-induced stress during the winter season.

    Which states show the highest agricultural losses?

    • Chhattisgarh: The most affected region with the highest share of NO₂ pollution from coal plants (19% during the monsoon and 12.5% in winter). It is a major hub for coal-fired power generation, leading to severe air pollution and crop yield losses.
    • West Bengal: There are significant NO₂ exposure from coal plants that affects 5.7% of cropland, with yield losses between 5-10% and even greater than 10% in some areas. The proximity of coal plants to fertile agricultural zones increases the impact on rice and wheat production.
    • Madhya Pradesh: About 5.9% of cropland near coal plants experiences 5-10% yield losses, while 11.9% of agricultural land could face losses exceeding 10%.
    • Uttar Pradesh: High overall NO₂ pollution, but only a small portion originates from coal-fired power plants. The other industrial sources dominate NO₂ emissions, yet coal plants still add to the burden on winter wheat yields.
    • Tamil Nadu: Low overall NO₂ levels but a large share comes from coal plants, disproportionately affecting local agriculture. The concentration of coal-fired power plants contributes a substantial portion of the region’s air pollution.

    What steps have been taken by the Indian government? 

    • Increased Budget Allocation for Coal Sector: The 2025-2026 Union Budget has increased the allocation for the Ministry of Coal by 255% over the revised estimates of FY 2024-2025, reflecting a focus on managing coal resources and addressing environmental concerns.
    • Pollution Control Mandates: The government has introduced emission norms for coal-fired power plants, requiring the installation of pollution control equipment like Flue Gas Desulphurization (FGD) to reduce nitrogen oxides (NO₂) and other pollutants.
    • Renewable Energy Promotion: Policies such as the National Solar Mission and incentives for renewable energy aim to reduce coal dependency and minimize air pollution while promoting cleaner energy alternatives.

    Way forward: 

    • Strengthen Emission Regulations: Implement stricter NO₂ emission limits for coal-fired power plants, enforce regular monitoring, and expedite the adoption of advanced pollution control technologies like selective catalytic reduction (SCR).
    • Promote Sustainable Agriculture and Clean Energy: Support farmers in NO₂-affected regions with resilient crop varieties and promote a transition to renewable energy through increased investment in solar and wind infrastructure.

  • ‘Cali Fund’ launched at CBD COP16

    Why in the News?

    A new international biodiversity fund, the ‘Cali Fund’, was launched at the 16th Conference of Parties (COP16) to the United Nations Convention on Biological Diversity (CBD) in Rome.

    What is the Cali Fund?

    • The Cali Fund is an international biodiversity financing mechanism launched on February 25, 2025, at COP16 of the UN Convention on Biological Diversity (CBD) in Rome.
    • It collects funds from private companies that utilize Digital Sequence Information (DSI) from nature in their businesses.
    • The fund supports biodiversity conservation, scientific research, and indigenous communities.

    Key Features of the Cali Fund:

    • Funding Source: Businesses using genetic data (DSI) from plants, animals, and microorganisms will contribute financially.
    • Utilization of Funds:
      • 50% allocated to indigenous and local biodiversity projects.
      • Supports scientific research and developing nations’ biodiversity action plans.
    • Global Management: Managed by UNDP and UNEP, with MPTFO handling finances.
    • Alignment with Global Goals: Supports Kunming-Montreal Global Biodiversity Framework (KMGBF) to reverse biodiversity loss by 2030.
    • First-of-Its-Kind: Direct private sector contributions to a global UN biodiversity fund.

    What is Digital Sequence Information (DSI)?

    • DSI refers to genetic data extracted from plants, animals, and microorganisms.
    • Used extensively in industries such as:
      • Pharmaceuticals (medicine development).
      • Cosmetics (natural ingredient research).
      • Agriculture (crop improvement, pest resistance).
      • Biotechnology (genetic engineering, bioinformatics).

    About the Convention on Biological Diversity (CBD):

    • The CBD, with 196 contracting parties, stands as the most comprehensive international agreement focused on nature conservation and the sustainable use of natural resources.
    • It was opened for signing at the 1992 UN Conference on Environment and Development in Rio de Janeiro.
    • The CBD has 3 main objectives:
    1. Conservation of biological diversity (including genetic, species, and habitat diversity).
    2. Sustainable use of biological diversity.
    3. Fair and equitable sharing of benefits arising from the use of genetic resources.
    • It addresses biodiversity at all levels: ecosystems, species, and genetic resources.
    • The Conference of the Parties (COP) is the CBD’s governing body, and it meets biennially to assess progress, set priorities, and develop action plans.
    • The Secretariat of the CBD is located in Montreal, Canada.
    • To further its goals, the CBD includes two binding protocols:
    1. The Cartagena Protocol (2000), which regulates the transboundary movement of living modified organisms (LMOs) and came into force in 2003.
    2. The Nagoya Protocol (2010), which provides a legal framework for the access to genetic resources and the fair sharing of benefits from their use.

    PYQ:

    [2014] With reference to ‘Global Environment Facility’, which of the following statements is/are correct?

    (a) It serves as financial mechanism for ‘Convention on Biological Diversity’ and ‘United Nations Framework Convention on Climate Change’

    (b) It undertakes scientific research on environmental issues at global level

    (c) It is an agency under OECD to facilitate the transfer of technology and funds to underdeveloped countries with specific aim to protect their environment.

    (d) Both A and B

     

  • Species in news: Gharials

    Why in the News?

    Madhya Pradesh CM released 10 gharials into the Chambal River at the National Chambal Gharial Sanctuary in Morena.

    Species in news Gharials

    About Gharial

    • The gharial (Gavialis gangeticus) is a unique species of crocodilian, characterized by its long, slender snout, which is perfectly adapted for catching fish.
    • The species derives its name from the “ghara”, a bulbous growth found on the snouts of adult males, which aids in vocalization and mating displays.
    • It is a fish-eating crocodile native to the Indian subcontinent.
    • They are a crucial indicator of clean river water.

    Conservation Status:

    • Recognizing the rapid decline in gharial populations, India launched captive breeding and release programs in the late 1970s.
    • Between 1975 and 1982, the country established 16 captive breeding centers and 5 protected sanctuaries to ensure the survival of the species.
    • Gharials are ‘Critically Endangered’ in the IUCN Red List of Species.
    • The species is also listed under Schedule I of the Wildlife (Protection) Act, 1972.
    • Today, gharials primarily survive in 5 major refuges:
    1. National Chambal Sanctuary (NCS) – The largest stronghold of gharials.
    2. Katerniaghat Wildlife Sanctuary in Uttar Pradesh.
    3. Chitwan National Park in Nepal.
    4. Son River Sanctuary in Madhya Pradesh.
    5. Satkosia Gorge Sanctuary in Odisha.

    PYQ:

    [2013] Consider the following fauna of India:

    1. Gharial

    2. Leatherback turtle

    3. Swamp deer

    Which of the above is/are endangered?

    (a) 1 and 2 only

    (b) 3 only

    (c) 1, 2 and 3

    (d) None

     

  • What is Black Plastic?

    Why in the News?

    A recent study suggested that black plastic contains harmful flame retardants, which may leach into food at hazardous levels.

    What is Black Plastic?

    • Black plastic is often made from recycled electronic waste like old computers, TVs, and appliances.
    • These electronics contain flame retardants (such as bromine-based compounds), heavy metals (lead, cadmium, mercury), and other hazardous chemicals.
    • Flame retardants are added to prevent fire hazards, but they can persist in recycled plastics.
    • Many of these chemicals are now banned in several countries due to their toxicity.
    • However, legacy plastics containing these substances continue to enter the recycling stream, leading to contamination of household products.

    Threats Posed by Black Plastic:

    • Contains Toxic Chemicals: Made from recycled e-waste, it may have flame retardants, heavy metals, and antimony.
    • Food Contamination: Heat and acidic foods can leach harmful chemicals into meals.
    • Environmental Impact: Difficult to recycle, it pollutes landfills and groundwater.
    • Health Risks: Linked to hormonal issues, neurological damage, and cancer.

    PYQ:

    [2019] Why is there a great concern about the ‘microbeads’ that are released into environment?

    (a) They are considered harmful to marine ecosystems.

    (b) They are considered to cause skin cancer in children.

    (c) They are small enough to be absorbed by crop plants in irrigated fields.

    (d) They are often found to be used as food adulterants.

     

  • NGT Report on Ganga Water Quality

    Why in the News?

    The National Green Tribunal (NGT) has raised concerns over the water quality of the Ganga at Triveni Sangam in Prayagraj, Uttar Pradesh. The river is failing to meet bathing standards due to high Biological Oxygen Demand (BOD) and faecal coliform contamination.

    Key Findings of the Ganga Water Quality Assessment at Triveni Sangam:

    • Water is unsafe for bathing as per Central Pollution Control Board (CPCB) standards.
    • BOD levels exceeded the permissible limit of 3 mg/L on multiple days in January 2025.
    • Government releasing 10,000-11,000 cusecs of fresh water to improve quality.
    • Faecal coliform levels (E. coli) far exceed safe limits due to sewage contamination.
    • Safe limit: 2,500 MPN/100 ml; Detected levels: 49,000 MPN/100 ml (Ganga) and 33,000 MPN/100 ml (Yamuna).

    What is Biological Oxygen Demand (BOD)?

    • BOD measures the amount of oxygen required by bacteria to break down organic matter in water.
    • Higher BOD levels indicate higher organic pollution, which can lead to oxygen depletion and aquatic life destruction.
    • Safe limit for bathing water is below 3 mg/L.
    • Excessive BOD levels suggest sewage, industrial waste, or decomposing organic matter contamination.
    • BOD levels above safe limits can cause waterborne diseases and disrupt aquatic ecosystems.

    PYQ:

    [2017] Biological Oxygen Demand (BOD) is a standard criterion for:

    (a) Measuring oxygen levels in blood

    (b) Computing oxygen levels in forest ecosystems

    (c) Pollution assay in aquatic ecosystems

    (d) Assessing oxygen levels in high-altitude regions

     

  • Why global sea ice cover has dipped to record low — what this means

    Why in the News?

    Between February 8 and 13, the total area of sea ice in the Arctic and Antarctic shrank to 15.76 million sq km, breaking the previous record low of 15.93 million sq km from early 2023, according to a BBC analysis of data from the US National Snow and Ice Data Center (NSIDC).

    What are the reasons for the record low?

    • Warm Air and Ocean Temperatures: Elevated air and sea temperatures have significantly contributed to the melting of both Arctic and Antarctic sea ice. Warmer conditions, particularly towards the end of summer, have led to increased melting rates, especially in the Antarctic region.
    • Wind Patterns: Changes in atmospheric dynamics, including stronger westerly winds associated with the Southern Annular Mode (SAM), have disrupted sea ice formation and stability. In the Antarctic, these winds can break apart ice more easily due to its thinner and more mobile nature compared to the thicker Arctic ice.
    • Delayed Freezing: In the Arctic, a delayed freezing process around regions like Hudson Bay has occurred due to unusually warm ocean temperatures, preventing the formation of new ice during winter.
    • Increased Freshwater Input: The melting of glaciers and ice shelves adds freshwater to the oceans, which can alter ocean stratification and impact sea ice formation. While freshwater can initially encourage sea ice growth in some contexts, it also leads to changes that may ultimately reduce overall sea ice extent.
    • Feedback Mechanisms: The loss of sea ice creates feedback loops that further exacerbate warming. As less ice remains to reflect sunlight, more solar radiation is absorbed by the ocean, leading to increased temperatures and further melting of ice.

    What does “dip” mean?

    • In the context of the recent report on sea ice, the term “dip” refers to a significant decrease or reduction in the extent of sea ice coverage. Specifically, it denotes the record low measurement of combined Arctic and Antarctic sea ice, which fell to 15.76 million square kilometres, marking a decline from previous levels.
    • This “dip” highlights the alarming trend of diminishing sea ice, which is crucial for regulating global temperatures and maintaining ecological balance in polar regions.

    What could be its impact?

    • Accelerated Global Warming: Less sea ice means more ocean water is exposed to sunlight, absorbing heat instead of reflecting it. Example: The Arctic is warming nearly four times faster than the global average, leading to extreme weather patterns worldwide.
    • Disruptions in Ocean Currents: Melting sea ice releases freshwater into the ocean, reducing salinity and slowing down deep-water circulation. Example: The Atlantic Meridional Overturning Circulation (AMOC), which influences global climate patterns, is weakening due to increased freshwater from melting Arctic ice.
    • Threat to Marine Ecosystems: Sea ice loss affects marine species dependent on stable ice conditions for survival. Example: Polar bears rely on sea ice for hunting seals. As ice declines, they face starvation and habitat loss. Similarly, krill populations in Antarctica, a key food source for whales and penguins, are declining due to changing ice conditions.
    • More Extreme Weather Events: Changes in polar ice influence atmospheric circulation, leading to unpredictable weather. Example: The weakening of the polar vortex due to Arctic warming has been linked to severe cold waves in North America and Europe, such as the Texas winter storm in 2021.
    • Coastal and Infrastructure Damage: Rising temperatures due to ice melt contribute to permafrost thawing, which destabilizes infrastructure in polar regions. Example: In Siberia, Russia, thawing permafrost has caused buildings and roads to collapse, posing a major economic and environmental challenge.

    What measures have been taken at the international level?

    • International Year of Glaciers’ Preservation (2025): The World Meteorological Organization (WMO) and UNESCO have declared 2025 as the International Year of Glaciers’ Preservation. This initiative aims to raise awareness about the importance of glaciers and ice sheets, which store a significant portion of the world’s freshwater, and to promote actions to mitigate their melting.
    • Global Cryosphere Watch: The WMO’s Global Cryosphere Watch network, which includes scientists from the Intergovernmental Panel on Climate Change (IPCC), has been actively monitoring and reporting on cryosphere changes. Their findings highlight alarming trends in ice loss and emphasize the need for immediate action to address these issues.
    • Collaborative Research Initiatives: Various international scientific collaborations are underway to study and model the impacts of climate change on sea ice. These efforts involve researchers from multiple countries working together to gather data, analyze trends, and develop strategies for adaptation and mitigation.
    • Climate Action Frameworks: Global climate agreements, such as the Paris Agreement, encourage countries to commit to reducing greenhouse gas emissions, which are a primary driver of climate change affecting sea ice.
    • Public Awareness Campaigns: International organizations are engaging in campaigns to educate the public about the significance of sea ice and glaciers in regulating global climate systems.

    Way forward: 

    • Strengthening Climate Mitigation Efforts: Nations must enhance commitments under the Paris Agreement by accelerating renewable energy adoption, reducing greenhouse gas emissions, and implementing carbon pricing mechanisms to curb global warming.
    • Enhancing Polar and Oceanic Monitoring: Strengthen international collaboration for real-time satellite monitoring, expand scientific research on polar ice dynamics, and develop adaptive strategies to protect vulnerable ecosystems and coastal communities.

    Mains PYQ:

    Q How do the melting of the Arctic ice and glaciers of the Antarctic differently affect the weather patterns and human activities on the Earth? Explain. (UPSC IAS/2021)

  • Delhi Earthquake

    Why in the News?

    A magnitude 4 earthquake struck New Delhi with epicentre near Dhaula Kuan. The quake was shallow (5 km depth), highlighting Delhi’s seismic vulnerability due to its location in Zone IV of India’s earthquake hazard map.

    Possible Causes of the Earthquake

    • Tectonic Activity along the Delhi-Hardwar Ridge:
      • Delhi sits on the Delhi-Hardwar Ridge, an active seismic fault.
      • Continuous collision of the Indian and Eurasian plates builds tectonic stress, leading to earthquakes when stress is released.
    • Groundwater Extraction as a Seismic Trigger: Excessive exploitation alters rock pressure, potentially inducing fault movements.
    • Anthropogenic (Human-Induced) Activity:
      • Urbanization, metro construction, and large-scale infrastructure projects alter subsurface stress.
      • Vibrations from construction activities can contribute to localized seismic instability.

    About the Aravalli-Delhi Fold Belt

    • The Aravalli-Delhi Fold Belt is a major geological formation that extends from southern Rajasthan to Haryana and Delhi.
      • It consists of ancient folded rock formations that have undergone millions of years of geological transformation.
    • This region has several pre-existing faults, meaning seismic activity can occur without direct tectonic subduction.
    • Although historically more active, tectonic movements in the belt have slowed over time.
    • These earthquakes occur due to fault reactivation and local stress accumulation rather than large-scale tectonic shifts.
      • Himalayan earthquakes are caused by subduction, where the Indian plate moves under the Eurasian plate.

    PYQ:

    [2021] Discuss about the vulnerability of India to earthquake related hazards. Give examples including the salient features of major disasters caused by earthquakes in different parts of India during the last three decades.

    [2015] The frequency of earthquakes appears to have increased in the Indian subcontinent. However, India’s preparedness for mitigating their impact has significant gaps. Discuss various aspects.

     

  • Parliamentary Panel recommends Paddy Residue MSP to curb Stubble Burning

    Why in the News?

    Recently, a parliamentary committee, led by Rajya Sabha MP Milind Deora, has suggested setting a minimum support price (MSP) for paddy residue. This aims to discourage farmers from burning stubble, which is a major cause of air pollution in Delhi.

    What were the observations made by the Parliamentary standing committee?

    • Stubble Burning as a Key Cause of Air Pollution: The committee acknowledged that stubble burning in Punjab and Haryana significantly contributes to Delhi’s air pollution during winter.
    • Farmers’ Constraints: Farmers burn stubble due to a short window (25 days) between paddy harvesting and wheat sowing.
    • State-wise Disparities: Punjab generates 16.1 million tonnes of non-basmati paddy straw annually, while Haryana generates only 4.04 million tonnes. Punjab also reported 10,990 stubble-burning incidents in 2023-24, compared to Haryana’s 1,406.
    • Existing Government Schemes: The Central government provides subsidies for crop residue management machinery, but high fuel costs make their usage unfeasible for many farmers.
    • Incentive Gap: Haryana provides higher financial support (₹7,000/acre for crop diversification, ₹4,000 for direct seeding of rice), whereas Punjab offers only ₹1,500 for direct seeding.
    • Technological Gaps: Even after mechanized harvesting, 10-15 cm of stubble remains in fields, which cannot be manually cleared due to labour shortages.

    What recommendations were given by the Panel?

    • Minimum Price for Paddy Residue: Establish a mechanism to determine a minimum price for paddy residue, similar to the Minimum Support Price (MSP) for crops, in consultation with the Commission for Air Quality Management (CAQM). The benchmark price should be announced before the Kharif season to reflect residue collection costs.
    • Promote Short-Duration Paddy Varieties: Urge state governments to promote short-duration paddy varieties instead of long-duration ones like PUSA 44.
    • Unified National Policy: Implement a unified national policy to integrate agricultural residue into bioenergy generation, ensuring inter-ministerial coordination.
    • Real-time Forecasting: Establish real-time mapping of crop acreage and forecasting of crop maturity and weather patterns to estimate land under cultivation and assess district-wise crop yields for better planning.
    • Storage Facilities: Set up interim storage facilities in districts where industries or end-users are not available within a 20–50 km range to facilitate efficient crop residue collection and transport.
    • Incentives and Subsidies: Provide incentives for the transportation of stubble to discourage in-field burning and subsidize machinery for in-situ paddy straw management. Farmers should get a 50 percent subsidy for machinery and 80 percent for establishing centers for renting out machines for managing paddy straw.
    • Technological Advancements: Develop technology that combines the work of harvesters and cutters to completely clear stubble from fields and promote early-maturing crop varieties.

    What is Delhi govt’s 20-point Winter Action Plan?

    • Real-Time Monitoring and Special Task Force: The plan includes the use of drones for real-time monitoring of pollution hotspots, marking a shift from manual inventory methods. Additionally, a special task force will be formed to oversee pollution control efforts and ensure compliance with regulations across various sectors.
    • Control Measures for Pollution Sources: The action plan emphasizes controlling dust pollution through increased water sprinkling, deployment of anti-smog guns, and strict regulations on construction sites. It also addresses vehicular emissions by promoting work-from-home policies and considering the implementation of an odd-even vehicle rationing scheme during high pollution days.
    • Public Participation and Emergency Measures: The plan encourages public involvement through campaigns and initiatives aimed at reducing pollution, such as banning firecrackers and promoting eco-friendly practices.
      • Emergency measures like artificial rain are also proposed to mitigate severe pollution events expected around Diwali and during stubble burning seasons.

    Way forward: 

    • Sustainable Agricultural Practices & Farmer Incentives: Strengthen financial incentives for crop residue management, promote widespread adoption of short-duration paddy varieties, and enhance technological solutions for complete stubble removal to reduce reliance on burning.
    • Integrated Pollution Control & Public Awareness: Implement a coordinated air quality management framework involving real-time monitoring, stricter enforcement of emission norms, and large-scale public participation campaigns to promote eco-friendly practices and behavioural change.

    Mains PYQ:

    Q Mumbai, Delhi and Kolkata are the three Mega cities of the country but the air pollution is much more serious probelm in Delhi as compared to the other two. Why is this so? (UPSC IAS/2015)