Relevance: GS Paper II – Polity & Governance
For Prelims:
Rubber Board, Rubber Act 1947, Hevea brasiliensis, latex extraction, vulcanisation, ITDA, plantation crops
For Mains:
- Tribal livelihood enhancement, plantation-based economy, sustainable agriculture diversification, agro-climatic suitability, institutional support mechanisms, inclusive rural development, value chain strengthening.
Why in News?
- The Ministry of Tribal Affairs has proposed to expand rubber plantations over 3,000 acres in Polavaram district of Andhra Pradesh.
- The initiative is specifically aimed at improving the economic conditions of tribal communities, especially the Konda Reddi tribe living in this region.
- Officials conducted field inspections and observed that existing rubber cultivation has already improved income levels and livelihood stability among tribal households.
Key Developments in Polavaram
- The expansion of rubber plantations in the Polavaram region is being undertaken as a coordinated initiative with institutional support from the Rubber Board and the Integrated Tribal Development Agency.
- This collaboration aims to ensure both technical guidance and effective implementation at the grassroots level.
- The region has been identified as suitable for rubber cultivation due to multiple favourable factors.
- These include adequate and well-distributed rainfall, availability of land in tribal-dominated areas, and the demonstrated success of earlier pilot rubber plantation projects.
- The initiative is expected to generate significant economic and social benefits.
- It aims to expand the area under rubber cultivation, enhance domestic production of natural rubber, and most importantly, provide long-term and stable income opportunities for tribal communities.
Institutional Framework: Rubber Board
- The Rubber Board was established under the Rubber Act, 1947, as the apex statutory body for the development of the rubber sector in India.
- It functions under the Ministry of Commerce and Industry and plays a central role in policy implementation, promotion, and regulation of rubber cultivation and industry.
- The headquarters of the Board is located in Kottayam, Kerala, which is traditionally the core region of rubber production in India.
- From this base, the Board coordinates activities across both traditional and non-traditional rubber-growing areas.
- The major functions of the Rubber Board include promoting rubber cultivation in suitable agro-climatic regions, providing scientific and technical assistance to farmers.
Scientific and Economic Aspects of Natural Rubber
- Natural rubber is obtained from the latex of the tree Hevea brasiliensis, which is native to the Amazon basin.
- Latex is extracted through a process called tapping, which involves making controlled cuts on the bark of the tree.
- Rubber cultivation requires:
- High temperature
- High humidity
- Well-distributed rainfall of about 200 cm annually
- The process of vulcanisation involves heating rubber with sulphur, which improves:
- Elasticity
- Strength
- Resistance to wear and tear
- Around 65% of natural rubber is used in the automobile sector, especially in the production of tyres and tubes.
Rubber Cultivation Pattern in India
- The total area under rubber cultivation in India is approximately 8.5 lakh hectares, reflecting its importance as a commercial plantation crop.
- Over time, the spatial distribution of rubber cultivation has undergone significant diversification beyond its traditional strongholds.
- Traditionally, rubber cultivation has been concentrated in Kerala and the Kanyakumari district of Tamil Nadu.
- This region continues to account for the largest share of production due to its favourable agro-climatic conditions and long history of plantation practices.
- In recent decades, the Northeastern region has emerged as an important contributor.
- States such as Tripura and Assam together account for more than 16 percent of India’s total rubber production.
- As a result of this diversification, Kerala’s share in total rubber production has declined from around 90 percent in earlier decades to approximately 78 percent at present, indicating a gradual geographical shift in cultivation patterns.
Significance for Tribal Livelihoods
- Rubber cultivation plays a crucial role in enhancing the livelihoods of tribal communities, particularly in regions where economic opportunities are limited.
- Unlike seasonal crops that are highly dependent on monsoon variability, rubber provides a stable and long-term source of income once the plantation matures.
- It contributes to livelihood diversification by reducing dependence on forest produce and irregular daily wage labour.
- Rubber cultivation also generates multiple employment opportunities across different stages of production, including plantation maintenance, latex tapping, and processing and transportation activities.
- Moreover, it contributes to the economic empowerment of tribal communities, especially in Scheduled Areas, by integrating them into market-oriented agricultural systems.
- Additionally, rubber cultivation encourages settled agricultural practices, which reduces seasonal migration and contributes to greater social stability and community development.
Government Policy Support
- Rubber Plantation Development Scheme promotes rubber cultivation in both traditional and non-traditional regions.
- Scheme for Rubber Development in Northeast focuses on expanding rubber plantations in northeastern states.
- Rubber Production Incentive Scheme (RPIS):
- Provides financial support
- Ensures minimum price of ₹150 per kg
- NE Mitra Scheme:
- Targets expansion of rubber cultivation over 2 lakh hectares
- Proposed PLI Scheme aims to promote domestic rubber goods manufacturing and reduce dependence on imports.
Challenges
- Rubber plantations have a long gestation period of 6–7 years, during which farmers do not receive immediate returns.
- Price fluctuations in global markets can affect farmer income.
- Monoculture plantations may lead to:
- Loss of biodiversity
- Ecological imbalance
- Tribal farmers may lack:
- Technical knowledge
- Processing infrastructure
Way Forward
- Promote mixed cropping and agro-forestry models to reduce ecological risks.
- Strengthen market linkages and procurement systems to ensure stable prices.
- Provide training and capacity building for tribal farmers.
- Develop local processing units to increase value addition.
- Integrate rubber cultivation with tribal development programmes.
Conclusion
The expansion of rubber plantations in Polavaram represents an important step towards combining agricultural diversification with tribal welfare. By ensuring institutional support, ecological sustainability, and market access, such initiatives can significantly improve income security and contribute to inclusive rural development.
CARE MCQ
Q. With reference to natural rubber cultivation, consider the following statements:
- Natural rubber is obtained from Hevea brasiliensis.
- Rubber cultivation requires low rainfall and dry climate.
- Vulcanisation improves the strength and elasticity of rubber.
Which of the statements given above are correct?
A. 1 and 3 only
B. 2 and 3 only
C. 1 and 2 only
D. 1, 2 and 3
Answer: A
Explanation:
Statement 1 is correct because Hevea brasiliensis is the primary source of natural rubber.
Statement 2 is incorrect because rubber requires high rainfall and humid conditions.
Statement 3 is correct as vulcanisation improves strength and elasticity.
Q. With reference to rubber cultivation in India, consider the following statements:
- Rubber grows well in regions where the temperature does not fall below 21°C.
- The minimum annual rainfall required for rubber cultivation is about 150 cm.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer: (c)
Explanation:
Statement 1 is correct.
Rubber is a tropical crop that requires consistently warm and humid conditions. It grows best in areas where temperatures remain high throughout the year, typically between 25°C and 35°C. A temperature falling below 21°C is not suitable for its optimal growth, as low temperatures adversely affect latex production and plant health.
Statement 2 is correct.
Rubber cultivation requires high and well-distributed rainfall. The ideal annual rainfall ranges between 200 cm and 400 cm. However, the minimum threshold is around 150–152 cm, below which the growth of rubber becomes unsuitable. Additionally, rainfall should be evenly distributed throughout the year, as prolonged dry spells negatively impact the crop.
Q. With reference to rubber cultivation in India, consider the following statements:
- Rubber requires uniformly high temperature and humidity throughout the year.
- Prolonged dry spells are favourable for rubber production.
- Rubber can be grown successfully in regions with well-distributed rainfall.
Which of the statements given above is/are correct?
(a) 1 and 3 only
(b) 2 and 3 only
(c) 1 only
(d) 1, 2 and 3
Answer: (a)
Explanation:
Statement 1 is correct because rubber is a tropical crop that thrives under conditions of high temperature and humidity throughout the year.
Statement 2 is incorrect as prolonged dry spells are harmful; rubber requires continuous moisture for latex production.
Statement 3 is correct since evenly distributed rainfall is essential for sustainable growth and yield.
Q. With reference to the geographical distribution of rubber cultivation in India, consider the following statements:
- Kerala accounts for the largest share of rubber production in India.
- The Northeastern region contributes significantly to rubber production.
- Rubber cultivation is confined only to traditional regions of South India.
Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Answer: (a)
Explanation:
Statement 1 is correct as Kerala remains the dominant producer of rubber in India.
Statement 2 is correct since states like Tripura and Assam have emerged as significant contributors.
Statement 3 is incorrect because rubber cultivation has expanded to non-traditional regions such as Karnataka, Goa, Maharashtra, and Andhra Pradesh.
Q. Consider the following statements:
- Rubber cultivation has expanded into non-traditional regions due to policy support.
- Kerala’s share in rubber production has increased over time due to expansion.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer: (a)
Explanation:
Statement 1 is correct as government policies have promoted rubber cultivation in new regions beyond Kerala.
Statement 2 is incorrect because Kerala’s share has declined (from around 90% to about 78%) due to diversification into other regions.
FAQs
Q1. Why is rubber cultivation important for tribal areas?
It provides long-term and stable income, reducing dependence on forest resources.
Q2. What role does the Rubber Board play?
It promotes cultivation, provides support, and develops the rubber industry.
Q3. Which state is the largest producer of rubber in India?
Kerala is the largest producer.
Q4. What is vulcanisation?
It is a process of treating rubber with sulphur to improve durability and elasticity.
Q5. Why is rubber expanding to non-traditional regions?
Due to suitable climate, policy support, and need for diversification.
Relevance: GS Paper II – Health
For Prelims:
Keytruda (Pembrolizumab), Immunotherapy, Monoclonal Antibody, PD-1 receptor, PD-L1 pathway
For Mains:
- Cancer burden in India, access to life-saving drugs, immunotherapy revolution, affordability vs innovation, counterfeit drug markets, health governance gaps
Why in News?
- Keytruda (Pembrolizumab) has come into focus due to reports of a counterfeit drug market in India, driven by high cost and limited access.
- The issue highlights concerns related to drug affordability, regulatory gaps, and patient safety in India’s healthcare system.
What is Keytruda?
- Keytruda is an immunotherapy drug developed by Merck & Co. (MSD).
- It is used to treat multiple cancers such as:
- Lung cancer
- Cervical cancer
- Renal cell carcinoma
- Triple-negative breast cancer
- It was approved by the US FDA in 2014 and is now widely used globally.
- It is among the highest revenue-generating cancer drugs, reflecting its clinical effectiveness.
Scientific Mechanism
- Keytruda is a monoclonal antibody-based immune checkpoint inhibitor.
- It targets the PD-1 receptor on T-cells.
- Normally, cancer cells evade immunity by binding PD-L1 (on cancer cells) to PD-1 (on T-cells), which switches off immune response.
- Keytruda blocks this interaction → reactivates T-cells → enables immune system to attack cancer cells.
- This mechanism represents a shift from directly killing cancer cells to activating the body’s immune system.
Why Keytruda is a Breakthrough
- Unlike chemotherapy and radiation, it:
- Targets cancer selectively
- Minimises damage to healthy cells
- Provides long-term immune memory
- It has shown remarkable results in advanced-stage cancers, where traditional therapies often fail.
- It represents the core of modern cancer treatment paradigm: immunotherapy.
India-Specific Context
- India is witnessing a rising cancer burden, projected to reach 24.5 lakh cases by 2045.
- Keytruda costs over ₹3 lakh per month, making it inaccessible for most patients.
- To improve access:
- Government removed basic customs duty
- Company introduced Patient Access Programme (buy 5 doses → get 30 free)
- Despite these measures, affordability remains a major barrier.
Emerging Challenge: Counterfeit Drug Market
- High cost and demand have led to the emergence of fake Keytruda supply chains.
- Investigations revealed:
- Unauthorized distribution channels
- Weak hospital procurement oversight
- Patients unknowingly receiving counterfeit drugs
- This poses serious risks:
- Treatment failure
- Health complications
- Loss of trust in healthcare system
Broader Immunotherapy Landscape
- Keytruda is part of a larger shift towards precision and immune-based therapies:
- Checkpoint inhibitors → e.g., Keytruda
• CAR-T Cell Therapy → genetically modified T-cells attack cancer
• mRNA Cancer Vaccines → train immune system to recognise tumour antigens - These therapies represent the future of oncology, but are currently expensive.
Governance and Regulatory Issues
- Weak drug supply chain monitoring enables counterfeit markets.
- Lack of strict verification mechanisms in hospitals increases risk.
- High dependence on imports raises affordability concerns.
- Limited domestic innovation in advanced biologics restricts accessibility.
Way Forward
- Strengthen drug traceability systems using digital tracking and barcoding.
- Promote domestic production of biosimilars and biologics to reduce costs.
- Enhance regulatory oversight on hospital procurement and distribution chains.
- Expand public funding and insurance coverage for advanced cancer therapies.
- Invest in indigenous research in immunotherapy and precision medicine.
Conclusion
Keytruda represents a major advancement in cancer treatment by harnessing the immune system to fight disease. However, its high cost and the emergence of counterfeit markets reveal critical gaps in India’s healthcare system. Ensuring accessibility, affordability, and regulatory integrity will be essential to translate such medical breakthroughs into real public health gains.
CARE MCQ
Q. With reference to Keytruda, consider the following statements:
- It is a monoclonal antibody used in immunotherapy.
- It enhances immune response by blocking PD-1 receptors.
- It directly kills cancer cells like chemotherapy.
Which of the statements given above are correct?
A. 1 and 2 only
B. 2 and 3 only
C. 1 and 3 only
D. 1, 2 and 3
Answer: A
Explanation:
Statement 1 is correct because Keytruda is a monoclonal antibody-based immunotherapy drug.
Statement 2 is correct as it blocks PD-1 receptors, reactivating T-cells.
Statement 3 is incorrect because it does not directly kill cancer cells; instead, it activates the immune system.
Q. The primary target of Keytruda in the human body is:
(a) PD-L1 on tumor cells
(b) PD-1 receptor on T-cells
(c) CTLA-4 receptor
(d) HER2 protein
Answer: (b)
Explanation: Keytruda binds to PD-1 receptors on T-cells, preventing immune suppression by tumor cells.
Q. The interaction between PD-1 and PD-L1 in cancer biology leads to:
(a) Activation of immune response
(b) Suppression of T-cell activity
(c) Increased antibody production
(d) Enhanced cell division
Answer: (b)
Explanation: PD-1–PD-L1 binding switches off T-cells, allowing cancer cells to evade immunity.
Q.Which of the following cancers is/are treated using Keytruda?
- Lung cancer
- Cervical cancer
- Renal cell carcinoma
Select the correct answer:
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Answer: (d)
Explanation:
Keytruda (pembrolizumab) is a broad-spectrum immunotherapy drug belonging to the class of immune checkpoint inhibitors, specifically targeting the PD-1 receptor on T-cells. By blocking the PD-1 pathway, it prevents cancer cells from evading immune detection and allows the immune system to attack tumor cells effectively.
Its approval across multiple cancer types is based on tumor immunogenicity (ability to trigger immune response) rather than only tissue of origin, which marks a shift from traditional cancer treatment approaches.
FAQs
Q1. What type of drug is Keytruda?
It is an immunotherapy drug and immune checkpoint inhibitor.
Q2. How does Keytruda work?
It blocks PD-1 receptors on T-cells, enabling them to attack cancer cells.
Q3. Why is Keytruda important for India?
Because of rising cancer burden and need for advanced treatment options.
Q4. What is the main challenge associated with Keytruda in India?
High cost and emergence of counterfeit drug market.
Q5. What is the future of cancer treatment?
Immunotherapy, gene-based therapies, and precision medicine.
Relevance: GS Paper III – Environment, Energy, Health
For Prelims:
Improved Cookstoves (ICS), Thermal Efficiency, Biomass Fuel, Household Air Pollution (HAP), PM2.5, Carbon Credits
For Mains:
Clean cooking energy transition, energy poverty, affordability versus clean fuel access, household air pollution, climate-health linkage, sustainable biomass use
Why in News?
- Growing debate has emerged on whether Improved Cookstoves (ICS) can function as a cleaner and more affordable alternative to LPG, particularly in rural India.
- Rising LPG prices and concerns regarding energy affordability have revived interest in biomass-based cooking solutions that are locally available and cost-effective.
What are Biomass Stoves (ICS)
- Improved Cookstoves are advanced cooking devices designed to burn biomass fuels such as firewood, crop residues, pellets, and briquettes more efficiently.
- These stoves incorporate improved airflow mechanisms, especially secondary aeration, which ensures more complete combustion of fuel.
- As a result, they reduce smoke generation, improve heat utilization, and increase overall cooking efficiency
Performance Comparison: ICS vs Traditional vs LPG
- Traditional chulhas operate with very low thermal efficiency of around 10 percent, leading to high fuel consumption and excessive smoke emissions.
- In contrast, Improved Cookstoves achieve thermal efficiency levels between 38 percent and 45 percent
- It reduces fuel consumption by up to two-thirds and significantly lowering emissions.
- LPG, on the other hand, provides near-complete combustion with minimal indoor pollution but involves high recurring costs due to cylinder refills.
- Thus, ICS act as an intermediate solution that improves efficiency and reduces pollution compared to traditional stoves, while remaining more affordable than LPG
Environmental and Health Impact
- Traditional biomass burning contributes to severe household air pollution, exposing users to harmful pollutants such as PM2.5 and carbon monoxide.
- Improved Cookstoves reduce the emission of these pollutants along with black carbon, which is a major climate forcer.
- This leads to measurable health benefits, including reduced incidence of respiratory diseases, eye irritation, and cardiovascular stress.
- Additionally, reduced fuel consumption lowers pressure on forest resources and contributes to environmental sustainability
Economic Viability and Cost Comparison
- The cost of household-level Improved Cookstoves generally remains below ₹2,000, while larger commercial models may cost up to ₹20,000.
- In comparison, LPG involves continuous expenditure on cylinder refills.
- Since ICS rely on locally available biomass and reduce fuel consumption by more than 50 percent, they offer a cost-effective alternative for low-income households, especially in rural areas
Sustainability of Biomass Use
- Biomass can be considered a sustainable fuel only when the rate of extraction does not exceed the rate of natural regeneration.
- Improved Cookstoves enhance sustainability by reducing fuel demand and promoting efficient utilization of biomass resources.
- However, unregulated or excessive extraction of firewood can still lead to deforestation and ecological imbalance
Role of Carbon Credits
- Improved Cookstoves contribute to emission reduction and are therefore eligible for carbon credit financing.
- Each reduction in greenhouse gas emissions can be monetised in carbon markets, allowing projects promoting ICS to generate revenue.
- This revenue can be used to subsidise the cost of stoves and expand their adoption among economically weaker sections
Challenges in Adoption
- Adoption of Improved Cookstoves faces several challenges.
- Cultural preferences for traditional cooking methods often limit acceptance.
- Maintenance requirements, such as periodic cleaning and part replacement, can discourage continued usage.
- Distribution networks in rural areas remain weak, and lack of awareness regarding long-term health benefits further slows adoption.
- Additionally, pellet-based ICS require a reliable and organised fuel supply chain
Way Forward
Efforts should focus on strengthening last-mile distribution networks to ensure availability of ICS in rural areas. Integration with government clean cooking initiatives can accelerate adoption. Carbon financing and corporate social responsibility funds can be leveraged to subsidise costs. Design improvements should ensure compatibility with local cooking practices, while awareness campaigns must highlight the health and economic benefits of switching to improved stoves
Conclusion
Improved Cookstoves provide a practical transitional solution between traditional biomass use and modern clean fuels like LPG. While they significantly reduce emissions and improve efficiency, they do not fully eliminate indoor air pollution. A balanced strategy combining LPG expansion, ICS adoption, and behavioural change is essential to achieve universal access to clean cooking energy in India
CARE MCQ
Q. With reference to Improved Cookstoves (ICS), consider the following statements-
- They significantly improve thermal efficiency compared to traditional chulhas
- They completely eliminate indoor air pollution
- They can be linked with carbon credit mechanisms
Which of the statements given above are correct
A. 1 and 3 only
B. 1 and 2 only
C. 2 and 3 only
D. 1, 2 and 3
Answer : (a)
Explanation:
Statement 1 is correct because ICS increase thermal efficiency from about 10 percent to nearly 40 percent or more
Statement 2 is incorrect because ICS reduce but do not completely eliminate indoor air
pollution
Statement 3 is correct because emission reductions from ICS can be monetised through carbon credit markets.
Q. Which of the following pollutants is primarily responsible for the formation of photochemical smog?
(a) Sulphur dioxide
(b) Nitrogen oxides and volatile organic compounds
(c) Carbon monoxide
(d) Particulate matter
Answer: (b)
Explanation: Photochemical smog forms when nitrogen oxides (NOx) react with volatile organic compounds (VOCs) in the presence of sunlight, producing secondary pollutants like ozone and PAN. It is typical of urban areas with heavy vehicular emissions.
Q. The major source of sulphur dioxide (SO₂) in urban air pollution is:
(a) Vehicular emissions
(b) Coal-based thermal power plants
(c) Agricultural activities
(d) Construction dust
Answer: (b)
Explanation: SO₂ is mainly emitted from burning of sulphur-containing fossil fuels, especially coal in thermal power plants.
Q. Which of the following is/are secondary air pollutants?
- Ozone
- Peroxyacetyl nitrate (PAN)
- Carbon monoxide
Select the correct answer:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Answer: (b)
Explanation: Ozone and PAN are secondary pollutants formed through atmospheric reactions. Carbon monoxide is a primary pollutant directly emitted from incomplete combustion.
FAQs
Q1 What makes Improved Cookstoves different from traditional chulhas?
They use better airflow and combustion techniques, resulting in higher efficiency and lower emissions
Q2 Are biomass stoves cleaner than LPG?
They are cleaner than traditional stoves but still not as clean as LPG
Q3 Why are ICS important for India?
They address energy poverty, reduce pollution, and provide a low-cost cooking solution for rural households
Q4 How do ICS contribute to climate change mitigation?
By reducing emissions such as black carbon and enabling carbon credit generation
Q5 Can ICS fully replace LPG?
They act as a complementary and transitional solution rather than a complete replacement for LPG
