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  • What is Khazan Farming System?

    The Salim Ali Bird Sanctuary in low-lying floodplains of Goa is characterized by an estuarine agricultural system called Khazan farming.

    Try this question from our AWE initiative:

    How far is the Integrated Farming System (IFS) helpful in sustaining agricultural production? (10 Marks)

    Khazan Farming

    • The low-lying floodplains of Goa host an estuarine agricultural system called Khazan farming.
    • This system is a carefully designed topo-hydro-engineered agro-aquacultural ecosystem mainly based on the regulation salinity and tides.

    How does it work?

    • Centuries ago, people in this region reclaimed low-lying brackish coastal floodplains and mangrove forests.
    • They constructed bunds using locally available material to prevent the ingress of saltwater, which killed the halophilic mangroves.
    • To control the flow of tidal waters, they built openings in bunds fitted with one-way gates.
    • These channels would fill in with the oncoming tide and bring with them fish, crab and shrimp, and the gates would automatically shut when the water level was equal on both sides.
    • This prevented the water from overflowing into the fields used to grow paddy and which has a low tolerance to salt.
    • When the tide receded, these gates would open outwards automatically, allowing the water to drain out.
    • During this time, a bag net was set at the gate to catch fish that had entered in earlier.

    Benefits of Khazan

    • Every bit of space was precious and used efficiently — the bunds were used to grow a variety of vegetables.
    • The Khazan system allowed for the farmer and the fisher to harmoniously coexist and was the key to sustaining what is considered Goa’s staple — fish, curry and rice.

    Why is it neglected these days?

    • Today, for various reasons, but primarily due to post-independence agrarian reforms of 1961, these lands largely lie fallow and are in a state of decay.
    • Lack of cultivation and maintenance of the bunds and sluice gates is leading to their breaching and the natural reclamation of these fallow lands by mangroves.
    • Moreover, mangroves are protected by law and it is illegal to cut them.
    • Areas that have these trees growing on them also come under the purview of the coastal regulation zone (CRZ); according to the 2011 notification, the mangrove areas are classified as CRZ I and cannot be developed upon.

    Back2Basics: Salim Ali Bird Sanctuary

    • The Salim Ali Bird Sanctuary is Goa’s smallest protected area — it comprises barely two square kilometres of lush mangrove forests.
    • The sanctuary is located on ChorĂŁo, one of Goa’s estuarine islands in the Mandovi river approximately five kilometres from capital Panaji.
    • The sanctuary and its surrounds are home to marsh crocodiles, smooth-coated otter, the unique glossy-marsh snake that feeds on crabs, mud lobsters, sap-sucking sea slugs, among others.

  • Rosalind Franklin: the unsung heroine of DNA

    The famous British scientist and virologist Rosalind Franklin is remembered across the world on her birth centenary who worked to construct the double-helix structure of DNA.

    Try this PYQ from CSP 2019:

    DNA/RNA has been an all-time favourite of UPSC!

    Q.‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why?

    1. It is used in developing gene-silencing therapies.
    2. It can be used in developing therapies for the treatment of cancer.
    3. It can be used to develop hormone replacement therapies.
    4. It can be used to produce crop plants that are resistant to viral pathogens.

    Select the correct answer using the code given below:

    (a) 1, 2 and 4

    (b) 2 and 3

    (c) 1 and 3

    (d) 1 and 4 only

    Rosalind Franklin (1920-1958)

    • She was an English chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite.
    • Although her works on coal and viruses were appreciated in her lifetime, her contributions to the discovery of the structure of DNA were largely recognised posthumously.

    DNA breakthrough

    • In 1952, Raymond Gosling, a graduate student at King’s College London, took a historic X-ray photograph under Franklin’s supervision.
    • Photo 51, as it is called, demonstrates the now-familiar, double-helix structure of DNA.

    Why is she remembered now?

    • The world is currently gripped in a pandemic, and her pioneering research in virology provided a crucial early step in the search for cures, vaccinations and tests.
    • During the Second World War, Franklin carried out research into coal and graphite that proved important for gas-masks, the PPE of that time.
    • It is because of Franklin, her collaborators and successors, that today’s researchers are able to use tools such as DNA sequencing and X-ray crystallography to investigate viruses such as COVID-10.

    Back2Basics: DNA/RNA 

    • Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) are perhaps the most important molecules in cell biology, responsible for the storage and reading of genetic information that underpins all life.
    • They are both linear polymers, consisting of sugars, phosphates and bases, but there are some key differences which separate the two.
    • These distinctions enable the two molecules to work together and fulfil their essential roles.
    • DNA encodes all genetic information and is the blueprint from which all biological life is created. And that’s only in the short-term.
    • In the long-term, DNA is a storage device, a biological flash drive that allows the blueprint of life to be passed between generations.
    • RNA functions as the reader that decodes this flash drive. This reading process is multi-step and there are specialized RNAs for each of these steps.

    Three types of RNA

    • Messenger RNA (mRNA) copies portions of genetic code; a process called transcription and transports these copies to ribosomes, which are the cellular factories that facilitate the production of proteins from this code.
    • Transfer RNA (tRNA) is responsible for bringing amino acids, basic protein building blocks, to these protein factories, in response to the coded instructions introduced by the mRNA. This protein-building process is called translation.
    • Finally, Ribosomal RNA (rRNA) is a component of the ribosome factory itself without which protein production would not occur.

  • Gold and forex reserves cannot finance stimulus

    The article analyses the issues with suggestions like printing of currency and using forex reserves to finance the stimulus. They also lead to an increase in government debts.

    Context

    • Prime Minister announced a stimulus package of â‚č20 trillion to fight the economic fallout of the covid pandemic.
    • Since then, several unorthodox ideas have been floated to raise funds for it without straining government finances.
    • Among the suggestions are the printing of currency, and using foreign exchange reserves or household gold.

    Let’s look at entries in the RBI’s balance sheets

    • On the liabilities side of it is the currency in circulation, commercial bank reserves  and government reserves.
    • On the asset side of it is forex reserves, government securities and gold.
    • The balancing item represents the central bank’s equity and accumulated surplus.

    Let’s look at 3 options suggested above and issues with them-

    1) Printing currency

    • Doing this would increase the liabilities of the RBI under “currency in circulation”.
    • But it first needs to acquire assets to offset this increase in liability.
    • These assets could be government securities, forex reserves or gold.
    • Thus, one way for the government to finance its expenditure would be to issue government bonds and ask RBI to print currency with which to subscribe to such bonds.
    • This is known as deficit monetization.
    •  It is important to note that for the central bank to print money, the government would have to issue bonds to it.
    • It will increase government debt.

    2) Monetisation of gold held by household

    • This would first involve the government buying gold from households in exchange for its bonds.
    • Then, the accumulated gold would be bought by RBI from the government with newly printed currency.
    •  In this case, instead of creating new money to acquire government bonds, RBI would be doing the same to acquire gold.
    • This too involves the Centre taking on additional debt.
    •  Moreover, gold monetization schemes in the past have yielded only mild success.

    3) Using RBI’s forex reserves

    • Against every dollar of forex reserves shown by RBI on the asset side, an equivalent rupee amount has already been created on the liability side.
    • This is because whenever RBI acquires foreign currency, it pays for it using the Indian rupee.
    • Thus, no additional currency can be printed against such already-acquired reserves.
    • The only way our forex reserves can be used for generating additional resources is by pledging them to a third party.
    • The pledging of RBI’s assets to raise funds is done only under extreme circumstances, for instance, during the 1991 balance of payments crisis.
    • We are certainly not in a situation that warrants a repeat of an exercise where RBI’s assets, be it gold or forex reserves, have to be mortgaged.

    So, what is the way out?

    • There are only three ways to finance government expenditure: taxes, debt and asset sales.
    • Taxes and asset sales can pitch in a bit towards the stimulus bill.

    Consider the question “Examine the ways in which government can raise the funds to finance the stimulus package and also discuss the issues with each move.”

    Conclusion

    There is no escaping the fact that we are staring at a higher build-up of government debt in the future. When we stop harbouring the notion that we can pay the stimulus bill without any deterioration in government finances, we will be able to see the bitter truth: There is no such thing as a free lunch.

    Read more about the issue here:

    India’s rising Forex Reserves

  • Open Credit Enablement Network (OCEN)

    A new credit protocol infrastructure called the OCEN protocol is set to be launched very soon.

    Practice question for mains:

    Q. What is Open Credit Enablement Network (OCEN)? How it is expected to be a gamechanger in the micro-credit facilitation services in India?

    Open Credit Enablement Network (OCEN)

    • OCEN is a credit protocol infrastructure, which will mediate the interactions between loan service providers, usually fintech and mainstream lenders, including all large banks and NBFCs.
    • It is developed by a think tank, Indian Software Products Industry Round Table (iSPIRT).
    • With this, a credit will become more accessible for a large number of entrepreneurs and small businesses in the country.
    • Private equity and venture capital players, angel investors, high net worth individuals and others also could be part of this exercise as investors.

    How will it work?

    • iSpirit is partnering with key leaders such as SBI, HDFC Bank Ltd., ICICI Bank Ltd., IDFC First Bank Ltd., Axis Bank Ltd. etc. for this new credit rail.
    • Account Aggregators which will be using these APIs to embed credit offerings in their applications, and will be called ‘Loan Service Providers’, which will play a crucial role in democratizing access to credit, and lowering interest rates for customers.

    Why need OCEN?

    • The cost of lending being too high in India, small value loans becomes very unfeasible.
    • OCEN which seeks to connect lenders to marketplaces and thereby to borrowers is a technology system.
    • If implemented, the technology can democratize lending to micro-enterprises and street vendors in a big way.

  • Bats and their Ecological Significance

    The COVID pandemic has magnified our fear of bats, but their conservation is crucial to prevent such events from arising again.

    Try this PYQ from CSP 2014:

    Q.Consider the following:

    1. Bats
    2. Bears
    3. Rodents

    The phenomenon of hibernation can be observed in which of the above kinds of animals?

    (a) 1 and 2 only

    (b) 2 only

    (c) 1, 2 and 3

    (d) Hibernation cannot be observed in any of the above

    Bats

    • Bats are the largest mammalian group after rodents, with over 1,300 species making up a quarter of all mammals.
    • They occur on all continents except Antarctica and are particularly diverse in South Asia, with 114 species of insect-eating bats and 14 fruit bats, also known as “flying foxes”, occurring in India.
    • They roost in large colonies on trees, tree hollows, caves, rock crevices and abandoned manmade structures.
    • They play a unique role in maintaining ecosystem structure, making a singular contribution to our food production, economy and well-being.
    • They are the only mammals capable of true flight and have a unique sonar-based echolocation mechanism to capture prey at night.

    Their significance

    1) Seed dispersal

    • About 29 per cent of all bats depend upon plants for food.
    • The diet of fruit-eating bats consists largely of flowers and fruits such as mangoes, bananas, guavas, custard apples, figs, tamarind and many species of forest trees.
    • Therefore, bats play a vital role in seed dispersal and forest regeneration. Studies have shown that seedlings raised from bat dispersed seeds show higher germination and vigorous growth.

    2) Pollination

    • Studies have found that bats play a vital role in pollination, mainly of large-flowered plants, and in crop protection.
    • Fruit bats (Megachiroptera) being large, require big flowers with copious amounts of nectar.
    • Bats are major pollinators for many species of mangroves which are important for coastal ecosystems and local livelihoods.

    3) Production boost

    • Insects are a major problem for agriculture, destroying up to 26 per cent of the annual production of crops worldwide every year, roughly amounting to $470 billion.
    • Insectivorous bats, which make up 70 per cent of all bat species, are voracious predators of nocturnal insects and crop pests.
    • Some large insectivorous bats are also reported to feed on small rodents. Thus they contribute directly to enhancing the crop productivity with tremendous economic impact.

    4) Soil fertility

    • Bats contribute significantly to soil fertility and nutrient distribution due to their large numbers, high mobility and varied habitats for roosting and foraging.
    • Bat droppings provide organic input to soil and facilitate nutrient transfer, contributing to soil fertility and agricultural productivity. The practice is harmless vis-a-vis human health.

    5) Health benefits

    • Several species of bats, in fact, contribute to human health by reducing populations of mosquitoes and other insect vectors that spread malaria, dengue, chikungunya and other diseases.
    • It is reported that a small bat may feed on almost 5,000 mosquitoes each and every feeding night far more than other measures adopted to eliminate them.

    Their conservation

    • According to the IUCN, about 5 per cent of bats are categorised as endangered and another 11 per cent are data deficient.
    • Further, some species of fruit bats are categorised under Schedule 5 of the Wildlife (Protection) Act, 1973, along with other vermin species like rats, making it difficult to legally conserve them.

    Conclusion

    • The pandemic has demonstrated that conservation of biodiversity and natural habitats is absolutely essential to prevent such events from arising again.
    • Understanding the role played by bats helps us appreciate how their absence can greatly affect all facets of our lives.
    • Viruses don’t jump directly from bats or other animals to humans.
    • Rather, illicit trade in wildlife, high levels of hunting for the consumption of wild meat, and destruction of natural habitats are responsible for this.

  • What are Strategic and Non-strategic Sectors of Industries?

    The government will soon come out with a policy on strategic sectors and simultaneously kick into motion a process of complete privatization for companies in the non-strategic sectors.

    Try this question for mains:

    Q. “Privatisation of CPSEs can lead to the conversion of public monopoly to a private monopoly.” Analyse.

    What are Strategic and Non-strategic Sectors of India?

    • An industry is considered strategic if it has large innovative spillovers and if it provides a substantial infrastructure for other firms in the same or related industries.
    • Earlier, the strategic sectors were defined on the basis of industrial policy.
    • The government classified Central Public Sector Enterprises (CPSEs) as ‘strategic’ and ‘non-strategic’ on the basis of industrial policy that keeps on changing from time-to-time.

    According to this, the Strategic sector PSUs are:

    • Arms & Ammunition of defence equipment
    • Defence aircraft & warships
    • Atomic energy
    • Applications of radiation to agriculture, medicine and non-strategic industry
    • Railways

    Banking, insurance, defence, and energy are likely to be part of the strategic sector list. All other PSUs apart from the strategic sectors fall under Non-strategic Sector including Power Discoms.

    A change in policy post-Atmanirbhar

    • Under the Self-sufficiency move, the proposed policy would notify the list of strategic sectors requiring the presence of at least one state-owned company along with the private sector.
    • In all other sectors, the government plans to privatize public sector enterprises, depending upon the feasibility.
    • The number of enterprises in strategic sectors will be only one to four, and others would be privatized/merged/brought under a holding company structure.

    Will it help privatization?

    • The government has already set in motion privatization plans for large PSU companies BPCL, Air India, Container Corporation of India, and Shipping Corporation of India.
    • Budget 2020-21 had announced plans to sell part of the Centre’s stake in LIC through an initial public offer (IPO), and the sale of equity in IDBI Bank to private, retail and institutional investors.
    • The emphasis on privatization could see companies in chemicals and infrastructure space being privatized, while the government has stated its intent to reduce the number of state-owned banks.
    • This could see some smaller banks being privatized in due course.

  • [pib] Kakrapar Atomic Power Project (KAPP-3) in Gujarat

    The indigenously designed 700 MWe reactor at the Kakrapar Atomic Power Project has achieved Criticality.

    Try this PYQ from CSP 2013:

    Q. The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct?

    (a) Gravity is the strongest of the four

    (b) Electromagnetism act only on particles with an electric charge

    (c) Weak nuclear force causes radioactivity

    (d) Strong nuclear force holds protons and neutrons inside the nuclear of an atom.

    What is ‘Criticality’ in Atomic/Nuclear Power Plants?

    • Reactors are the heart of an atomic power plant, where a controlled nuclear fission reaction takes place that produces heat, which is used to generate steam that then spins a turbine to create electricity.
    • Fission is a process in which the nucleus of an atom splits into two or smaller nuclei, and usually some by-product particles.
    • When the nucleus splits, the kinetic energy of the fission fragments is transferred to other atoms in the fuel as heat energy, which is eventually used to produce steam to drive the turbines.
    • For every fission event, if at least one of the emitted neutrons on average causes fission, a self-sustaining chain reaction will take place.
    • A nuclear reactor achieves criticality when each fission event releases a sufficient number of neutrons to sustain an ongoing series of reactions.

    Controlling Criticality

    • When a reactor is starting up, the number of neutrons is increased slowly in a controlled manner. Neutron-absorbing control rods in the reactor core are used to calibrate neutron production.
    • The control rods are made from neutron-absorbing elements such as cadmium, boron, or hafnium.
    • The deeper the rods are lowered into the reactor core, the more neutrons the rods absorb and the less fission occurs.
    • Technicians pull up or lower down the control rods into the reactor core depending on whether more or less fission, neutron production, and power are desired.
    • If a malfunction occurs, technicians can remotely plunge control rods into the reactor core to quickly soak up neutrons and shut down the nuclear reaction.

    Why is this achievement significant?

    • It is the biggest indigenously developed variant of the Pressurized Heavy Water Reactor (PHWR).
    • The PHWRs, which use natural uranium as fuel and heavy water as moderator, is the mainstay of India’s nuclear reactor fleet.
    • Until now, the biggest reactor size of the indigenous design was the 540 MWe PHWR, two of which have been deployed in Tarapur, Maharashtra.
    • India works to ramp up its existing nuclear power capacity of 6,780 MWe to 22,480 MWe by 2031.
    • The 700MWe capacity constitutes the biggest component of the expansion plan.

    Back2Basics: India’s PHWR technology

    • PHWR technology started in India in the late 1960s with the construction of the first 220 MWe reactor, Rajasthan Atomic Power Station, RAPS-1 under the joint Indo-Canadian nuclear co-operation.
    • Canada supplied all the main equipment for this first unit, while India retained responsibility for construction, installation, and commissioning.
    • For the second unit (RAPS-2), import content was reduced considerably, and indigenization was undertaken for major equipment.
    • Following the withdrawal of Canadian support in 1974 after Pokhran-1, Indian nuclear engineers completed the construction, and the plant was made operational with a majority of components being made in India.

  • Lonar Lake turned pink due to ‘Haloarchaea’ microbes

    The colour of Lonar lake water in Maharashtra’s Buldhana district turned pink due to a large presence of the salt-loving ‘Haloarchaea’ microbes, a probe carried out by a Pune-based institute has concluded.

    Make a note of all saltwater lakes in India. Few of them are Pulicat, Pangong Tso, Chilika, and Sambhar Lakes etc.

    Haloarchaea’ microbes

    • Haloarchaea or halophilic archaea is a bacteria culture which produces pink pigment and is found in water saturated with salt.
    • The increased salinity and pH facilitated the growth of halophilic microbes, mainly Haloarchaea.
    • Basically, it is the biomass of these microbes and because of that, the surface of the water turned red or pink and as soon as the biomass subsided, the colour disappeared.
    • The scientist said the colour of the lake is now returning to original as the rainy season has kicked in, allowing dilution of the water.
    • Initially, it was thought for the red-pigmented Dunaliella algae due to which the water might have turned pink.
    • Because of that, the salinity and pH/alkalinity levels have also come down and green algae have started growing in the water body.

    About Lonar Lake

    • Lonar Lake, also known as Lonar crater, is a notified National Geo-heritage Monument, saline (pH of 10.5), Soda Lake, located at Lonar in Buldhana district, Maharashtra.
    • It was created by an asteroid collision with earth impact during the Pleistocene Epoch.
    • It is one of the four known, hyper-velocity, impact craters in basaltic rock anywhere on Earth.
    • It sits inside the Deccan Plateau—a massive plain of volcanic basalt rock created by eruptions some 65 million years ago.
    • Its location in this basalt field suggested to some geologists that it was a volcanic crater.

  • Key stakeholders in data regulation

    The article examines the structures and role of key stakeholders in regulation of Non-Personal Data as per the report submitted by the committee headed by Kris Gopalakrishnan.

    Context

    • There is a realisation that data should be unlocked in public interest beyond the use by a few large companies
    • Data, in many cases, are not just a subject of individual decision-making but that of communities, such as in the case of ecological information.
    • Therefore, it is critical that communities are empowered to exercise some control over how the data are used.
    • Recently the Non-Personal Data committee released a governance framework, which raises many concerns.

    Following are the key stakeholder as defined in the report

    1)Data principals

    • As per the report, the first keyholders are data principals, who/ which can be individuals, companies or communities.
    • The idea of communities as data principals is introduced ambiguously by the report.
    • The report does not address the translation of offline inequalities and power structures to data rights.

    2) Data custodians

    • Data custodian is the one who undertake collection, storage, processing, and use of data in a manner that is in the best interest of the data principal.
    • The details in this section are unclear.
    • It is not specified if the data custodian can be the government or private companies only.
    • It is also not clear what best interest is, especially when several already vague and possibly conflicting principal communities are involved.
    • It is also not clear how communities engage with the custodian.
    • Suggestion that data custodians can monetise the data they hold is especially problematic as this presents a conflict of interest with those of the data principal communities.

    3) Data trustees

    • The report talks about data trustees as a way for communities to exercise data rights.
    • Trustees can be governments, citizen groups, or universities.
    • There is no clarity on how “trust” is extended and fructified with the community, and how trustees are empowered to act on behalf of the community.
    • The principles of a legal trust and the fiduciary responsibility that come with role of trustees are critical.
    • Trustees, by definition, are bound by a duty of care and loyalty towards the principal and thus work in their best interests.
    • Trustee has to negotiate on behalf of Data Principals’ data rights with technology companies and regulators.
    • This thinking is not reflected in the report.
    •  Also, the relationship between the data principal communities and the trustees is not clear.

    How will the ‘Trust’ function?

    • The report explains data trusts comprising specific rules and protocols for containing and sharing a given set of data.
    • Trusts can hold data from multiple custodians and will be managed by public authority.
    • But the power, composition and functions of the trust are not established.
    • One possible way to simplify the ecosystem would be to consider data trusts as a type of custodian.
    •  So that trustees can represent the community and act on behalf of the data principals.

    Consider the question “What do you understand by Non-Personal Data. Examine its utility and need to treat as a public good.”

    Conclusion

    The committee should organise broader consultations to ensure that the objective of unlocking data in public interest and through collective consent does not end up creating structures that exacerbate the problems of the data economy and are susceptible to regulatory capture.

  • [pib] RAISE Initiative

    The Ministry of Power has launches Retrofit of Air-conditioning to improve Indoor Air Quality for Safety and Efficiency (RAISE) – a joint initiative of EESL and USAID.

    Possible prelims question:
    Q. The MAITREE programme recently seen in news is related to:
    Trade/Energy Efficiency/Climate Change/ Strategic Relations

    RAISE Initiative

    • It aims to ensure cleaner and greener office spaces in the country.
    • This is a part of the larger initiative developed for healthy and energy-efficient buildings, in partnership with US Agency for International Development’s (USAID) MAITREE programme.

    Why RAISE?

    • Poor air quality has been a concern in India for quite some time and has become more important in light of COVID pandemic.
    • As people return to their offices and public spaces, maintaining good indoor air quality is essential for occupant comfort, well-being, productivity and overall public health, the statement noted.

    About MAITREE programme

    • The Market Integration and Transformation Program for Energy Efficiency (MAITREE) is a part of the US-India bilateral Partnership between the Ministry of Power and USAID.
    • It is aimed at accelerating the adoption of cost-effective energy efficiency as a standard practice within buildings and specifically focuses on cooling.

    Back2Basics: EESL

    • Energy Efficiency Services Limited (EESL), under the administration of Ministry of Power, is working towards mainstreaming energy efficiency.
    • It is implementing the world’s largest energy efficiency portfolio in the country.
    • EESL aims to create market access for efficient and future-ready transformative solutions that create a win-win situation for every stakeholder.

    About USAID:

    • USAID is the world’s premier international development agency and a catalytic actor driving development results.