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‘Fertilizer Saga’ in Sri Lanka: A Considered Opinion

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by Professor W. A. J. M. De Costa

Senior Professor and Chair of Crop Science Department of Crop Science, Faculty of Agriculture University of Peradeniya

Why use fertiliser on crops?

Fertilisers are used for two purposes.

One purpose is to provide essential plant nutrients that are required for crops to produce an economically-important product (i. e. food for humans, feed for animals, a variety of industrial products, etc.). Just as people require food, crops require nutrients for producing what is expected from them.

When a crop is harvested and its yield taken away, a large amount of nutrients is taken out of the system (i. e. the soil). Therefore, continuous cropping of a land leads to the depletion of nutrients in the soil. Application of fertilisers to such a soil replenishes its nutrient pool and makes continuous cropping possible. This is the second purpose of using fertilisers.

A natural ecosystem like a forest does not require an external input such as fertiliser because nutrients are not taken out of the system. Nutrients in dead leaves, branches, trunks and roots are recycled back to the soil. It is a ‘closed’ nutrient cycle, as opposed to the ‘open’ system in an agricultural crop.

 

Inorganic vs organic fertilzers

Inorganic fertilisers (normally called chemical fertilisers) contain nutrients in a concentrated form (i.e. fraction of the nutrient in a unit weight of the fertiliser is high). They are produced via industrial processes or by refining mined minerals containing the nutrient. Three major plant nutrients, viz. nitrogen, phosphorus and potassium are supplied as inorganic fertilisers, either individually (‘straight fertilisers’) or in a mixture (‘compound fertilisers’).

Organic fertilisers (organic manures) are raw materials of plant, animal or human origin. When applied to the soil, they decompose and release their nutrients. In comparison to inorganic fertilisers, the fraction of nutrients in a unit weight of organic manure is much lower. Therefore, to give a crop/soil the same amount of a nutrient, a much greater quantity of organic manure than inorganic fertiliser has to be applied. All organic fertilizers are ‘compound fertilisers’ in the sense that they contain a mixture of nutrients though in a diluted form.

When applied to the soil, the inorganic fertilizers release their nutrients quickly. In recent times, nano-scale materials have been used to slow down the release of nutrients from inorganic fertilisers (i.e. called ‘nano-coated slow-release fertilisers’). When applied to the soil, organic fertilisers release their nutrients slowly, because the organic raw material has to decompose to release its nutrients. Natural decomposition is done by naturally-occurring soil microorganisms. Formulations of microorganisms are used to accelerate decomposition and nutrient release from organic fertilisers.

 

Why ‘modern’ agriculture uses large quantities of inorganic fertiliser?

Global population currently stands at ca. 7.7 billion and is projected to reach 8.5 billion by 2030 and 9.7 billion in 20501. Land area suitable for growing crops is shrinking continuously because of a variety of reasons. Some of the productive lands are lost for urbanisation (i.e. population pressure) while some are converted to alternative non-agricultural uses (e.g. industrial purposes). On the other hand, a portion of lands available for crop production is gradually, but continuously, lost because they become unproductive and economically non-viable due to climate change (e.g. temperatures becoming too warm, rainfall becoming insufficient, etc.) and soil degradation (e.g. loss of fertile top soil due to erosion, loss of soil fertility due to continuous cropping and removal of nutrients without adequate replenishment, development soil problems such as salinity, acidity and accumulation of toxic material).

Increasing population and decreasing arable land area means that we are continuously challenged to increase crop yields per unit land area (usually called ‘crop productivity’) to fulfil the increasing demand for food, feed and the variety of products from agricultural crops. To produce a greater amount of yield from the same unit of land, a crop requires a greater quantity of essential nutrients—there is no such thing as a free lunch in nature— in particular nitrogen (N), phosphorus (P) and potassium (K). A crop has to obtain this increased nutrient requirement either from the soil (which may contain some amount of nutrients naturally) or via fertiliser applied to the soil. Except the soils in virgin lands, soils in the large majority of agricultural lands do not contain naturally the amounts of essential nutrients in quantities required by crops to achieve the productivity levels to meet the continuously increasing demand. Hence, the need to add large quantities of nutrients to the soil. This has to be done every season as most nutrients added during the previous season are removed as crop yield. Because inorganic fertilizer contains nutrients in a concentrated form, the required quantities of the three major nutrients can be supplied with a manageable quantity of inorganic fertiliser. Supplying of the same requirement with organic fertiliser would require substantially larger quantities, which are either not possible to find due to insufficient raw material or difficult to manage. Hence, the widespread use of inorganic fertiliser in commercial agriculture. Organic agriculture where crops are grown exclusively with organic fertilisers represents a small fraction of global agriculture (a very optimistic estimation would put it at < 5%).

 

Why the drive towards reduction of inorganic fertiliser use in agriculture?

While providing the required amounts of the three major plant nutrients to sustain crop yields to ensure food security and maintain soil nutrients at levels required for continuous cropping, application of inorganic fertilisers has caused adverse environmental and human health impacts.

Because nutrients are released readily from inorganic fertilisers, a considerable fraction of those added to the soil gets leached into groundwater and water bodies (i.e. rivers, lakes, reservoirs etc..). The consumption of water from such polluted sources has been linked to a variety of human health issues.

Inorganic fertilizers have been shown to contain toxic substances (e.g. heavy metals such as lead, arsenic, mercury, etc.) as impurities remaining in them after their mining and industrial manufacturing process. The accumulation of these toxic substances in the soil and water sources has been linked to certain human health issues. However, it should be noted that organic fertilizers, especially those of plant and animal origin, are not entirely free from toxic substances.

Alteration of the soil environment by adding concentrated nutrients alters the naturally-occurring community of soil microorganisms who perform many important functions in the soil to ensure its fertility.

In economic terms, inorganic fertilisers, most of which are produced in industrialised developed countries by multi-national companies, are prohibitively expensive to farmers in the developing countries.

Because of the above reasons, there has been a drive towards reduction of the use of inorganic fertilisers and a part-replacement of them by organic fertilisers. Such movements have begun in developed countries (as well as in some developing countries) since the1980s and gathered momentum during the last two decades. During certain periods, some countries and regions of countries have been forced to produce their crops largely on organic fertiliser because of circumstances (mainly political) (e.g. Cuba, Northern Province of Sri Lanka during the ethnic conflict).

 

Current situation in Sri Lanka

The present situation in Sri Lanka has arisen following a gazette notification by the government to ban the import of inorganic fertilizer and synthetic agrochemicals (i.e. insecticides, fungicides, herbicides, etc.) with immediate effect. The pollution of the water bodies and perceived links to human health issues, such as the Chronic Kidney Disease of Unknown Aetiology (CKDU) are cited as the reasons for the ban. While there have been a longstanding discussion at many levels of the Sri Lankan society on the role of inorganic fertilizers (and agrochemicals) in causing the above issues and calls for ‘toxin-free food’, the total and immediate ban came ‘out of the blue’ without any consultation (to my knowledge) with any of the relevant stakeholders (e.g. the Department of Agriculture, academia, the plantation sector research institutes, farmer organizations, growers of a wide range of crops or their organizations, private sector organizations in the supply and marketing chain etc.). Apparently, the President/government was acting on the advice of a few university academics (who are either advisors or political appointees as heads of public-sector institutions) and longstanding activists (e.g. Ven. Athuraliya Rathana, Dr. Anuruddha Padeniya et al).

Currently, all relevant public sector institutions have been directed to seek how alternatives to inorganic fertilizer (i.e. organic fertilizer) could be produced and supplied to farmers and growers in adequate quantities required during the Yala season which is already started and beyond. It has been stated in the media that any shortfall for the current season (and probably beyond until adequate quantities can be produced locally) will be provided through imported organic fertiliser. A similar strategy has been proposed for synthetic agrochemicals for which the principal alternative is pesticides of biological origin (i.e. Biopesticides).

 

Possible impacts of an absence of inorganic fertiliser in Sri Lanka

 

It is highly likely that in the absence of inorganic fertilisers, the productivity (i. e. economic harvest per unit land area) of some of the major crops in Sri Lanka (e. g. rice and tea), which are crucial to national food security and economy, will decline significantly leading to a decline in the total production (i.e. productivity × cultivated area). At present, Sri Lanka does not have sufficient sources of readily-available organic fertiliser nor does it not have the infrastructure in place to produce organic fertilizers in adequate quantities to fulfil even the minimum nutrient requirement of these two major crops considering the scale on which they are grown.

The prognosis would be the same for a majority of the other annual crops (e.g. cereals, pulses, vegetables, industrial crops, etc.) and floriculture plants (i.e. cut flower and foliage), which are grown on a smaller scale. Some crops such as rubber and coconut may not show an immediate decline in their harvest but will begin to show declines in the medium-term, depending on the existing fertility status of the soils on which they have been established and the overall management status of the plantation and its trees.

 

Why is Sri Lankan agriculture so reliant on inorganic fertiliser?

The scientific reasons

Soils in Sri Lanka are, by nature, relatively poor in the amounts of essential nutrients (i. e. the three major nutrients, nitrogen, phosphorus, potassium plus magnesium, sulphur and calcium, which are also needed in relatively large quantities) that they make naturally available for crops growing on them. The natural supply of nutrients from a soil comes when the parent material of the soil (i.e. rocks and minerals) undergoes a very slow, gradual decomposition process called ‘weathering’. The plant nutrients are part of the minerals contained in the parent material and are released to the soil when the minerals weather due to the action of rain and other climatic factors such as temperature. Because of the high rainfall and temperature regime associated with the tropical climate in Sri Lanka, its soils have been highly-weathered over a long period of time (over several millennia) so that the existing soil minerals (the source of natural supply of nutrients) are considerably (if not severely) depleted of nutrients. Because of the high rainfall regime (especially in the wet zone and the Central Highlands and to a lesser extent in the dry and intermediate zones), a substantial portion of the nutrients that are released from minerals via the weathering process are leached and lost to the soil, further depleting its natural fertility.

Furthermore, most of the lands on which crops are currently cultivated in all climatic zones of Sri Lanka have been under cultivation for a long period of time. As explained earlier, long-term cultivation of a soil leads to depletion of its nutrient reserves.

Soils in the Central Highlands and those on sloping terrain in other parts of Sri Lanka are further degraded due to soil erosion caused by high-intensity rainfall. Erosion takes away the top layer of the soil and a substantial amount of nutrients naturally available along with it.

Because of the reasons outlined above, neither the grain yield levels of rice that are required to fulfil the annual national demand nor the green leaf yield levels of tea that would bring the expected level of foreign exchange could be sustained on Sri Lankan soils without providing the required quantities of the three major nutrients via inorganic fertilisers.

It is likely that in the absence of the recommended inorganic fertiliser (especially nitrogen fertilizer) inputs, yield reductions would become detectable in the current Yala season in rice and within a matter of a few months in tea. This is because of the specific physiology of these two crops. Nitrogen is critically-essential for early growth of rice and the leaf growth of tea. Therefore, a shortage of nitrogen to these crops would be felt almost immediately as a retardation of early growth of rice (which would be reflected as a substantial reduction in grain yield) and the weekly green leaf harvest in tea.

Similar to what happens in rice and tea, the retardation of growth and yield is likely to happen with a shortage of nitrogen fertilizer in all short-duration annual crops and commercial plants. Leguminous pulse crops (e. g. soybean, mung bean, cowpea, black gram, common bean, etc.) could be an exception because of their ability to utilise atmospheric nitrogen.

Impacts of a shortage of nitrogen fertiliser are likely to be delayed for a few years (as stated earlier) in coconut and rubber because of their specific physiology where the nut yield or latex (rubber) yield is not as dependent on an immediate nitrogen supply as the grain and leaf yields of rice and tea respectively. However, a shortage of nitrogen will cause a reduction in the internal processes of these plants, which will be reflected in a few years’ time, as a reduction in the processes leading to the production of nuts and latex in coconut and rubber respectively. Recently-planted and younger coconut and rubber plantations will show a retardation of tree growth which will delay the commencement of nut and latex production.

A basic scientific fact which should have been noted by the advisors to politicians, if not the politicians, is that a shortage of nitrogen affects the fundamental plant process, photosynthesis, which is responsible for growth and yield formation of crops2. Shortage of nitrogen, along with shortages of phosphorus, potassium and magnesium, decreases the rate of photosynthesis, which is translated in to a reduction of growth and yield of any crop, which may happen over different time scales in different crops. It is unlikely that in the absence of inorganic fertilisers, organic fertiliser applications would be able to prevent the resulting decrease in growth and yield of a large majority of commercial crops in Sri Lanka.

 

A few spice crops such as cloves, cardamoms and nutmegs, but not cinnamon and pepper, may escape yield reductions due to a shortage of inorganic fertilizer because they are largely present in homegardens in the Central Province which are generally not fertilized.

Out of the three major fertilizers, containing nitrogen, phosphorus and potassium, a shortage would be most immediately felt for nitrogen fertilizer. The impact would be delayed for phosphorus fertilizer and it would be intermediate for potassium fertilizer. The scientific reasons are that nitrogen is the nutrient that is most critically-needed for a large majority of plant processes and is the most mobile nutrient in the soil, which makes it the most susceptible for leaching losses; phosphorus is the least mobile nutrient and therefore, can remain in the soil for

2 Evans, J. R., & Clarke, V. C. (2019). The nitrogen cost of photosynthesis. Journal of Experimental Botany, 70(1), 7-15. An expert review that was published in a highly-recognized scientific journal in plant sciences. Although most of its content is aimed at specialists in Plant Physiology, there are a few paragraphs (highlighted) from which an educated ‘layman’ reader could gather useful insights in to why nitrogen fertilizer is of such crucial importance for crops. a reasonable period of time and can be released to plants slowly; potassium is a nutrient which is intermediate in terms of its mobility in the soil and criticality of its need for plant processes.

 

What has been the response of the stakeholders?

 

This is only a snapshot from my perspective based on discussions with professional colleagues and contacts. An overwhelming majority of academics, research officers, extension officers, commercial growers and farmers do not agree with this immediate and total ban of inorganic fertilizers. A minority of stakeholders in the agriculture sector and an overwhelming majority of environmental activists (who unfortunately have no clear idea of how large-scale agriculture to feed a nation differs from growing a few pots of plants at home) have welcomed the ban. A powerful argument of this minority of stakeholders in the agriculture sector is that organic agricultural products (e.g. organic tea) fetches a higher price in the global market and will offset any loss of foreign exchange due to reduced total production. This argument ignores the decline in yield and total production of locally-consumed food (including the staple food, rice), the wide-ranging implications of which cannot be compensated by a higher price (which is unlikely to happen in the highly-volatile local market for agricultural produce).

Where do we go from here?

While disagreeing with a total and immediate ban on inorganic fertilizer, a majority of academics, research officers and extension officers, but not commercial growers and farmers, acknowledge that there is scope for an appreciable reduction in the quantities of inorganic fertilizer (relative to the levels that have been in use before the ban) without incurring a yield reduction. Farmers have been applying the inorganic fertilizers at rates which are above those recommended by the Department of Agriculture, because inorganic fertilizers had been made available to them at a highly-subsidized price.

Research on a range of different crops over several seasons across a range of locations carried out by my research group has shown that 25% of the recommended amount of nitrogen fertilizer can be reduced without incurring a yield reduction.

Therefore, a phased-out reduction of inorganic fertilizer along with a gradual increase of the contribution of organic fertilizer to supply the nutrient requirement of crops is a viable pathway that a majority of stakeholders agrees on. Increasing the contribution of organic fertilizer requires: (a) up-scaling of organic fertilizers that have been developed in Sri Lanka using microorganisms isolated from local soils; (b) developing infrastructure to produce such organic fertilizers at commercial scale; (c) changing farmer/grower perceptions and attitudes on the total dependence on inorganic fertilizers and start using organic fertilizer as a part-replacement via a concerted extension effort. (The agricultural extension service in Sri Lanka, which was acknowledged as one of the best in Asia in the 1980s, have been severely downgraded during the last three decades); (d) initiating a concerted programme to increase the organic matter content of Sri Lankan soils, which would enable them to retain a higher fraction of the nutrients applied to them via both inorganic and organic fertilizers and thereby minimize leaching losses.

Even if all the above are successfully implemented (which will take time especially in the current context), an agriculture sector, which is totally based on organic fertilizer—the first such country in the world according to the President—is unlikely to produce enough food (e. g. rice) to ensure food security in Sri Lanka or generate other agriculture-based products that fetch foreign exchange and support local manufacturing industries (e. g. rubber). Therefore, it is inevitable that a balance needs to be struck between the reduction of inorganic fertilizer (from the levels that were practiced before the ban) and a viable level of organic fertilizer as a part-replacement to provide the full nutrient requirement that a higher crop yield demands.

As a medium-term solution, research on a more balanced form of agriculture (i.e. an optimum combination of inorganic and organic fertilizer) within the climatic and soil conditions that are prevalent in Sri Lanka (while taking in to account their possible changes as part of global climate change) needs to be encouraged via increased funding. Currently, Sri Lanka invests only 0.11% of its GDP in Research and Development (in all disciplines including agriculture), which is one of the lowest even in Asia. Therefore, there is little room for optimism in this regard.

 

Importation of organic fertilizers

Importation of organic fertilizers is being promoted as a short-term measure to supply the nutrient requirement to agricultural crops during the period when Sri Lanka is expected develop its local capacity to produce organic fertilizers in quantities sufficient to meet the full nutrient demand of the crops. It is said that the quality of imported organic fertilizer will be assured via strict quality control procedures which conform to, for example, the EU Standards. Only time will tell whether this will actually materialize and provide a solution. A few points of major concern are as following:

Quantity

Experienced Soil Scientists and fertilizer experts are of the opinion that concentration of nutrients in organic fertilizers is such that large quantities need to be imported (subsequently transported to fields and applied) to fulfil the nutrient demand to produce the crop yields at the required levels to ensure food security and sustain foreign exchange earnings.

Environmental concerns

Almost all organic fertilizers, being material of plant, animal or human origin, retain a diverse population of microorganisms. Unlike inorganic fertilizers, which are inert material, organic fertilizers are live material. Microorganisms, whether in soils, plants or any other location or entity, are often highly environment-specific. Introduction of such alien microorganisms to Sri Lankan soils could cause all types of unforeseen interactions with local microorganisms. Some of these interactions could have environmental repercussions, which are irreversible as once released to the soil, these alien microorganisms cannot be ‘recalled’. Therefore, it is always advisable and safer to develop organic fertilizers locally rather than importing.

Sterilization of imported organic fertilizer to kill all alien microorganisms via a process of fumigation after importation is suggested as a solution to this problem. However, the large quantities of organic fertilizers that are required to be imported and the toxicity levels

of the chemicals that are used in fumigation could lead to environmental issues that the organic fertilizers are aiming to prevent. Recently, the Cabinet Minister of Agriculture went on record saying that only sterilized organic fertilizer conforming to quality standards acceptable to a government-appointed expert committee would be imported. Given Sri Lanka’s poor record of regulation, implementation and enforcement of quality standards on a range of items, both imported and locally-produced and both agricultural and non-agricultural, it remains to be seen whether these promises will be fulfilled.

Rational medium- to long-term possibilities for reducing the use of inorganic fertilizer while increasing yields of major food crops at a rate required to keep pace with increasing population and consequently increasing demand

A few medium- to long-term options, based on sound scientific principles, are available and are briefly discussed below:

Genetic modification of crops

In addressing the challenges of increasing crop yields while decreasing their use of nutrients (i.e. increasing the yield per unit nutrient used), scientists have been trying to modify the components and steps involved in the photosynthesis process via genetic engineering. One of their aims has been to produce a plant which achieves a higher photosynthetic rate with the same level of nitrogen used. After about two decades of research effort, a recent research publication in the prestigious science journal Nature reports of such a breakthrough in rice3. Reading through it carefully, I gather that this new genetically-modified rice plant (we call them ‘transgenic’ plants) has the potential to achieve a higher photosynthetic rate and grain yield with the same level of nitrogen as the ‘normal’ plants (which are not genetically-modified). However, this is possible under ‘well-fertilized conditions’ meaning that at the currently-used high nitrogen fertilizer rates4. This particular publication does not indicate whether such higher levels of photosynthesis and yields are possible at lower than ‘well-fertilized conditions’ which are likely to prevail in fields fertilized exclusively with organic fertilizer. Nevertheless, as Professor Stephen Long, a recognized world authority on photosynthesis states, the production of this transgenic rice plant could be a ‘game-changer’ to increase grain yield of rice without a proportionate increase in nitrogen input.

However, it should be noted that a considerable time could elapse from the point of producing a ‘transgenic’ plant to developing a new crop variety that could be released to the farmers for commercial cultivation. Yet, this appears to be a solid step in the right direction.

3 Long, S. P. (2020). Photosynthesis engineered to increase rice yield. Nature Food, 1(2), 105-105. A brief comment by Professor Stephen Long on the recent breakthrough in producing a genetically-modified rice plant which is able to achieve a higher photosynthetic rate and grain yield with the same amount of nitrogen.

4 Yoon, D. K., Ishiyama, K., Suganami, M., Tazoe, Y., Watanabe, M., Imaruoka, S., … & Makino, A. (2020). Transgenic rice overproducing Rubisco exhibits increased yields with improved nitrogen-use efficiency in an experimental paddy field. Nature Food, 1(2), 134-139. The research publication which describes the above breakthrough in photosynthesis and nitrogen use. Increasing the organic matter content in soils

Soil organic matter (SOM) is a component of the soil in addition to the soil particles. While the soil particles arise from weathering of rocks and minerals of the soil parent material, SOM arises from the decomposition of organic material added to the soil. SOM helps to retain nutrients and water in the top layers of the soil where most plant roots are also present. In addition, SOM helps to improve the aeration and structure in the soil, which are vital physical properties in the soil to facilitate plant growth.

Except the soils in the terraced plateaus of the Central Highlands, soils of almost all arable crop lands in Sri Lanka have inadequate SOM. This means that the ability of these soils to retain the nutrients that are added to them, especially in the form of readily-released inorganic fertilizer, is limited. Therefore, a concerted effort to increase the SOM status in Sri Lankan soils will enable reduction of leaching losses of nutrients and associated environmental consequences such as pollution of water sources. Increased SOM will also enable reduction of the amounts of inorganic fertilizer applied without causing a shortage of nutrients to the crops as a greater fraction of the applied fertilizer remains in the soil to be absorbed by the plants.

Therefore, while the total and immediate ban of inorganic fertilizer and replacing them with organic fertilizer will not provide the required nutrients in sufficient quantities, the large-scale application of organic fertilizer, if it happens as envisaged, will serve to increase the SOM of Sri Lankan soils in the medium- to long-term. This will make the Sri Lankan Agriculture sector less-reliant on inorganic fertilizers. However, this will have to be a gradual, phased-out transition rather than a sudden, unplanned total ban on inorganic fertilizers. Such a transition should be towards achieving an optimum balance of inorganic and organic fertilizers, which will ensure food security while protecting the environment. This is an endeavour that has been undertaken in many parts of the world, which include both the developed and developing countries, and is termed ‘Sustainable Intensification of Agriculture’5.

5 Baulcombe, D., Crute, I., Davies, B., Dunwell, J., Gale, M., Jones, J., … & Toulmin, C. (2009). Reaping the benefits: science and the sustainable intensification of global agriculture. The Royal Society. A very useful, concise, but comprehensive description of the salient features of sustainable intensification of agriculture written by a group

of experts from the Royal Society, UK. Can be accessed at https://royalsociety.org/topics-

policy/publications/2009/reaping-benefits/.



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Challenges to addressing allegations during Sri Lanka’s armed conflict

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A handout picture of President Mahinda Rajapaksa browsing through the LLRC report. (File photo)

A political commentator has attributed the UK sanctions against four individuals, three of whom were top ranking Army and Navy Officers associated with Sri Lanka’s armed conflict, to the failure of successive governments to address human rights allegations, which he describes as a self-inflicted crisis. The reason for such international action is the consistent failure of governments to conduct independent and credible inquiries into allegations of war crimes; no ‘effective investigative mechanism’ has been established to examine the conduct of either the Sri Lankan military or the LTTE.

He has not elaborated on what constitutes an “effective investigative mechanism. He has an obligation and responsibility to present the framework of such a mechanism. The hard reality however is that no country, not even South Africa, has crafted an effective investigative mechanism to address post conflict issues.

INVESTIGATIVE MECHANISMS

The hallmark of a credible investigative mechanism should be unravelling the TRUTH. No country has ventured to propose how such a Mechanism should be structured and what its mandate should be. Furthermore, despite the fact that no country has succeeded in setting up a credible truth-seeking mechanism, the incumbent government continues to be committed to explore “the contours of a strong truth and reconciliation framework” undaunted by the failed experiences of others, the most prominent being South Africa’s Truth and Reconciliation Commission.

South Africa’s Truth and Reconciliation Commission is often cited as the gold standard for post conflict Mechanisms. Consequently, most titles incorporate the word “Truth” notwithstanding the fact that establishing the “Truth” was a failure not only in South Africa but also in most countries that attempted such exercises.

Citing the South African experience, Prof. G. L. Peiris states: “pride of place was given to sincere truth-telling which would overcome hatred and the primordial instinct for revenge. The vehicle for this was amnesty…… Despite the personal intervention of Mandela, former State President P. W. Botha was adamant in his refusal to appear before the Commission, which he deemed as ‘a fierce unforgiving assault’ on Afrikaaners” (The Island, 01 April, 2025). In the case of Sri Lanka too, disclosures to find the “Truth” would be all about the other party to the conflict, thus making Truth seeking an accusatory process, instead of a commitment to finding the Truth. The reluctance to engage in frank disclosure is compounded by the fear of recrimination by those affected by the Truth.

Continuing Prof. Peiris cites experiences in other countries. “Argentina, the power to grant amnesty was withheld from the Commission. In Columbia, disclosure resulted not in total exoneration, but in mitigating sentences. In Chile, prosecutions were feasible only after a prolonged interval since the dismantling of Augusta Pinochet’s dictatorship ….” (Ibid).

The mechanisms adopted by the countries cited above reflect their own social and cultural values. Therefore, Sri Lanka too has to craft mechanisms in keeping with its own civilisational values of restorative and not retributive justice for true reconciliation, as declared by President J. R, Jayewardene in San Francisco as to what the global attitude should be towards Japan at the conclusion of World War II. Since the several Presidential Commissions appointed under governments already embody records of alleged violations committed, the information in these commission reports should be the foundation of the archival records on which the edifice of reconciliation should be built.

ESTABLISHING DUE CONTEXT

The suggestion that an independent and credible inquiry be conducted into allegations of war crimes reflects a skewed understanding of the actual context in which the armed conflict in Sri Lanka occurred. Even the UNHRC has acknowledged that the provisions of “Article 3 common to the four Geneva Conventions relating to conflicts not of an international character is applicable to the situation in Sri Lanka, as stated in para. 182 of the OISL Report by the UNHRC Office. Therefore, the correct context is International Humanitarian Law with appropriate derogations of Human Rights law during an officially declared Emergency as per the ICCPR.; a fact acknowledged in the OISL report.

Consequently, the armed conflict has to conform to provisions of Additional Protocol II of 1977, because “This Protocol, which develops and supplements Article 3 common to the Geneva Conventions is the due context. There is no provision for “alleged war crimes” in the Additional Protocol. Although Sri Lanka has not formally ratified Additional Protocol II, the Protocol is today accepted by the Community of Nations as Customary Law. On the other hand, “war crimes” are listed in the Rome Statute; a Statute that Sri Lanka has NOT ratified and not recognized as part of Customary Law.

Therefore, any “investigative mechanism” has to be conducted within the context cited above, which is Additional Protocol II of 1977.

SRI LANKAN EXPERIENCE

On the other hand, why would there be a need for Sri Lanka to engage in an independent and credible inquiry into allegations, considering the following comment in Paragraph 9.4 and other Paragraphs of the Lessons Learnt and Reconciliation Commission (LLRC)?

“In evaluating the Sri Lankan experience in the context of allegations of violations of IHL (International Humanitarian Law), the Commission is satisfied that the military strategy that was adopted to secure the LTTE held areas was one that was carefully conceived in which the protection of the civilian population was given the highest priority”

9.7 “Having reached the above conclusion, it is also incumbent on the Commission to consider the question, while there is no deliberate targeting of civilians by the Security Forces, whether the action of the Security Forces of returning fire into the NFZs was excessive in the context of the Principle of Proportionality…” (Ibid)

The single most significant factor that contributed to violations was the taking of Civilians in the N Fire Zone hostage (NFZ) by the LTTE. This deliberate act where distinction between civilian and combatant was deliberately abandoned, exposed and compromised the security of the Civilians. The consequences of this single act prevent addressing whether military responses were proportionate or excessive, or whether the impact of firing at make-shift hospitals were deliberate or not, and whether limiting humanitarian aid was intentional or not. These issues are recorded and addressed in the Presidential Commission Reports such as LLRC and Paranagama. This material should be treated as archival material on which to build an effective framework to foster reconciliation.

UK SANCTIONS

Sanctions imposed by the UK government as part of an election pledge for Human Rights violations during the armed conflict is a direct act of intervention according to Article 3 of the Additional Protocol of 1977 that is the acknowledged context in which actions should be judged.

Article 3 Non-intervention states:

1 “Nothing in the Protocol shall be invoked for the purpose of affecting the sovereignty of a State or the responsibility of the government by all legislative means, to maintain or re-establish law and order in the State or to defend the national unity and territorial integrity of the State”.

2 “Nothing in the Protocol shall be invoked as a justification for intervening directly or indirectly, for any reason whatsoever, in the armed conflict or in the internal or external affairs of the High Contracting Party in the territory on which the conflict occurs”.

Targeting specific individuals associated with the armed conflict in Sri Lanka is a direct assault of intervention in the internal affairs of Sri Lanka. The UK government should be ashamed for resorting to violating International Law for the sake of fulfilling an election pledge. If Sri Lanka had issued strictures on the UK government for not taking action against any military officers responsible for the Bloody Sunday massacre where 26 unarmed civilians participating in a protest march were shot in broad daylight, Sri Lanka would, in fact be intervening in UK’s internal affairs.

CONCLUSION

The UK’s action reflects the common practice of making election pledges to garner targeted votes of ethnic diasporas. The influence of ethnic diasporas affecting the conduct of mainstream politics is becoming increasingly visible, the most recent being the Tamil Genocide Education Week Act of Ontario that was dismissed by the Supreme Court of Canada on grounds the Provincial Legislations have no jurisdiction over Federal and International Laws.

However, what should not be overlooked is that the armed conflict occurred under provisions of common Article 3 of the Geneva Conventions. This Article is developed and supplemented by Additional Protocol II of 1977. Therefore, since all Geneva Conventions are recognised as Customary Law, so should the Additional Protocol II be, because it is a development of common Article 3.

Imposing sanctions under provisions of Additional Protocol II amounts to Intervention in internal affairs of a State as stated in Article 3 of the Protocol; II cited above. Such interventions are prohibited under provisions of international law.

The need to revive independent and credible inquiries after the lapse of 16 years is unrealistic because those who were perpetrators and victims alike cannot be identified and/or located. Furthermore, the cost of disclosure because of the possibility of retribution would compromise their security. A realistic approach is to use the material recorded in the Presidential Commission Reports and treat them as archival records and use the lessons learnt from them to forge a workable framework that would foster unity and reconciliation with the survivors in all communities This is not to live in the past but to live in the here and now – the present, which incidentally, is the bedrock of Sri Lanka’s civilisational values.

by Neville Ladduwahetty

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The Silent Invasion: Unchecked spread of oil palm in Sri Lanka

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Invasive fast growing palm trees in the Kalu Ganga basin. Pictures courtesy Rajika Gamage

Sri Lanka’s agricultural landscape is witnessing a silent yet profound transformation with the rapid expansion of oil palm plantations. Once introduced as a commercial crop, the oil palm (Elaeis guineensis) is now at the center of a heated debate, with environmentalists and scientists warning of its devastating ecological consequences.

Speaking to The Island research scientist Rajika Gamage, said: “The spread of oil palm in Sri Lanka is not just a concern for biodiversity, but also for water resources, soil stability, and even local economies that rely on traditional crops.”

A Brief History of Oil Palm Cultivation

Oil palm, originally from West and Central Africa, was first cultivated for commercial purposes in Java in 1948 by Dutch colonists. It reached Malaysia and Indonesia by 1910, where its lucrative potential drove large-scale plantations.

According to Gamage, in Sri Lanka, the first significant oil palm plantation was established in 1968 at Nakiyadeniya Estate by European planters, initially covering a mere 0.5 hectares. Today, oil palm cultivation is predominantly concentrated in Galle, Matara, and Kalutara districts, with smaller plantations in Colombo, Rathnapura, and Kegalle.

Over the decades, he says the commercial viability of oil palm has prompted its expansion, often at the cost of native forests and traditional agricultural lands. Government incentives and private investments have further accelerated the spread of plantations, despite growing concerns over their environmental and social impacts.

Economic Boon or Environmental Curse?

Supporters of oil palm industry argue that it is the most efficient crop for vegetable oil production, yielding more oil per hectare than any other alternative. Sri Lanka currently imports a significant amount of palm oil, and expanding local production is seen as a way to reduce dependence on imports and boost local industries. However, Gamage highlights the hidden costs: “Oil palm plantations deplete water sources, contribute to soil erosion, and threaten native flora and fauna. These are long-term damages that far outweigh the short-term economic benefits.”

One of the primary environmental concerns is the aggressive water consumption of oil palm, which leads to the depletion of underground aquifers. This is particularly evident in areas such as Kalu River and Kelani River wetlands, where native ecosystems are being severely affected. Additionally, soil degradation caused by extensive monoculture farming results in loss of fertility and increased vulnerability to landslides in hilly regions.

Furthermore, studies show that oil palm plantations disrupt the natural habitats of endemic species. “Unlike rubber and coconut, oil palm does not support Sri Lanka’s rich biodiversity. It alters the soil composition and prevents the regeneration of native plant species,” Gamage explains. The loss of forest cover also exacerbates human-wildlife conflicts, as displaced animals venture into human settlements in search of food and shelter.

Rajika Gamage

A Threat to Indigenous Agriculture and Culture

Beyond environmental concerns, oil palm is also threatening traditional crops like kitul (Caryota urens) and palmyrah (Borassus flabellifer), both of which hold economic and cultural significance. “These native palms have sustained rural livelihoods for centuries,” says Gamage. “Their gradual replacement by oil palm could lead to economic instability for small-scale farmers.”

Kitul tapping, an age-old tradition in Sri Lanka, provides a source of income for thousands of families, particularly in rural areas. The syrup extracted from kitul is used in local cuisine and traditional medicine. Similarly, palmyrah has deep roots in Sri Lankan culture, particularly in the Northern and Eastern provinces, where its products contribute to food security and local industries.

The rise of oil palm plantations has led to the clearing of lands that once supported the traditional crops. With large-scale commercial investments driving oil palm expansion, small-scale farmers are finding it increasingly difficult to sustain their livelihoods. Gamage warns, “If we allow oil palm to replace our native palms, we risk losing not just biodiversity, but also a vital part of our cultural heritage.”

The Global Perspective: Lessons from Other Nations

Sri Lanka is not the first country to grapple with the consequences of oil palm expansion. Malaysia and Indonesia, the world’s leading producers of palm oil, have faced severe deforestation, biodiversity loss, and socio-economic conflicts due to unchecked plantation growth.

In Indonesia, for example, vast tracts of rainforest have been cleared for palm oil production, leading to habitat destruction for endangered species such as orangutans and Sumatran tigers. Additionally, indigenous communities have been displaced, sparking legal battles over land rights.

Malaysia has attempted to address some of these issues by introducing sustainability certifications, such as the Malaysian Sustainable Palm Oil (MSPO) standard. However, implementation challenges remain, and deforestation continues at an alarming rate.

Sri Lanka can learn valuable lessons from these experiences. Implementing strict land-use policies, promoting agroforestry practices, and ensuring transparency in plantation expansion are crucial steps in mitigating environmental damage while supporting economic development.

The Urgent Need for Action

Despite these concerns, Sri Lanka has yet to enforce strict regulations on oil palm expansion. Gamage urges authorities to intervene: “It is imperative that we implement policies to control its spread before it is too late. The unchecked expansion of oil palm will lead to irreversible environmental damage.”

To address this issue, experts suggest a multi-pronged approach:

Stronger Land-Use Policies

– The government must enforce restrictions on oil palm cultivation in ecologically sensitive areas, such as wetlands and forest reserves.

Reforestation and Rehabilitation

– Efforts should be made to restore degraded lands by reintroducing native tree species and promoting sustainable agroforestry.

Supporting Traditional Agriculture

– Incentives should be provided to farmers growing traditional crops like kitul and palmyrah, ensuring that these industries remain viable.

Public Awareness and Education

– Raising awareness among local communities about the environmental and social impacts of oil palm can empower them to make informed decisions about land use.

Sustainable Alternatives

– Encouraging research into alternative vegetable oil sources, such as coconut oil, which has long been a staple in Sri Lankan agriculture, could reduce reliance on palm oil.

As Sri Lanka stands at a crossroads, the decisions made today will determine the country’s ecological and agricultural future. While the economic benefits of oil palm are undeniable, its long-term environmental and social costs cannot be ignored. The challenge now is to strike a balance between economic growth and environmental sustainability before the damage becomes irreversible.

In conclusion Gamage said, “We must act now. If we allow oil palm to spread unchecked, future generations will bear the cost of our inaction.”

Sri Lanka has the opportunity to take a different path—one that prioritises biodiversity conservation, sustainable agriculture, and the well-being of local communities. The time for decisive action is now.

By Ifham Nizam

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A plea for establishing a transboundary Blue-Green Biosphere Reserve in Gulf of Mannar and Palk Bay

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Blue-green land and waterscapes act as ecological corridors across land and water in creating an ecological continuity in order to protect and restore the habitats of native and naturalised species.

In addition, these ecological corridors also help to conserve and improve the habitats of migratory species, as well. One of the main objectives of establishing blue-green land-waterscapes is to reconcile increasing local/regional development and human livelihood challenges in a sustainable manner while, at the same time, safeguard biodiversity and their habitats/ecosystems, as far as possible.

While green landscapes are natural and semi-natural terrestrial vegetation types like natural forests and grasslands, blue waterscapes are aquatic or semi-aquatic vegetation types such as seagrass meadows, mangroves and coastal and other wetlands. These vegetated coastal ecosystems known as ‘blue carbon’ ecosystems are some of the most productive on Earth and located at the interfaces among terrestrial, freshwater and marine environments. They provide us with essential ecosystem services, such as serving as a buffer in coastal protection from storms and erosion, spawning grounds for fish, filtering pollutants and contaminants from coastal waters thus improving coastal water quality and contributing to all important food security.

In addition, they capture and store “blue” carbon from the atmosphere and oceans at significantly higher rates per unit area than tropical forests (Figure 1) and hence act as effective carbon sinks. By storing carbon, these ecosystems help to reduce the amount of greenhouse gas in the atmosphere, thus contributing significantly to mitigate the effects of climate change.

Figure 1: Carbon storage in different vegetation types (Source – What Is Blue Carbon and Why Does It Matter? – Sustainable Travel International)

.Blue-green Carbon Markets

The recognition of blue carbon (BC) ecosystems (primarily mangroves, seagrasses and tidal marshes) as an effective natural climate solution paved the way for their inclusion within carbon markets. Blue carbon is the marine analog of green carbon, which refers to carbon captured by terrestrial (i.e., land-based) plants. The blue-green carbon market involves buying and selling carbon credits from projects that protect and restore coastal and marine ecosystems (blue carbon) and terrestrial ecosystems (green carbon). Since Blue Carbon ecosystems have higher carbon sequestration (capture and store) potential compared to their terrestrial counterparts, blue Carbon credits are worth over two times more than green carbon credits. They offer opportunities for commercial enterprises to offset carbon emissions and in turn support climate action.

Blue Carbon projects are expected to grow twofold in the near future. With the recent surge in international partnerships and funding, there is immense growth potential for the blue carbon market. However, it is critically important to look beyond the value of the carbon sequestered to ensure the rights and needs of local communities that are central to any attempt to mitigate climate change using a blue and green carbon project.

Blue Carbon projects can serve as grassroot hubs for sustainable development by developing nature-based solutions in these ecosystems thus contributing to both climate change mitigation and adaptation. Globally, numerous policies, coastal management strategies, and tools designed for conserving and restoring coastal ecosystems have been developed and implemented. Policies and finance mechanisms being developed for climate change mitigation may offer an additional route for effective coastal management. The International Blue Carbon Initiative, for example, is a coordinated, global program focused on conserving and restoring coastal ecosystems for the climate, biodiversity and human wellbeing.

Until recently, most of these opportunities focus on carbon found in the above ground vegetative biomass and do not account for the carbon in the soil. On the other hand, blue carbon, in particular has the potential for immense growth in carbon capture economics in the near future and can provide significant socioeconomic and environmental benefits. Consequently, blue -green carbon habitats in the Gulf of Mannar – Palk Bay region represent invaluable assets in climate change mitigation and coastal ecosystem conservation and sustainable development.

Gulf of Mannar and Palk Bay  Trans-boundary Region

The Gulf of Mannar and Palk Bay region form a transboundary area within the waters of southeastern India and northwestern Sri Lanka. This region supports dense seagrass meadows having a high level of marine biodiversity including marine mammals such as dugong. Sea turtles are frequent visitors to the gulf while sharks, dolphins, sperm and baleen whales too, have been reported from this area. The Mannar region is recognized as an Important Marine Mammal Area (IMMA) of the world by IUCN (Figure 2) and also an Important Bird Area by Birdlife International. This region as a whole is a store house of unique biological wealth of global significance and as such is considered as one of the world’s richest regions from a marine biodiversity perspective.

Figure 2. Gulf of Mannar and Palk Bay IMMA (Source – IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force, 2022 IUCN-MMPATF (2022)

Gulf of Mannar Biosphere Reserve – India

India has already declared a part of this region as the UNESCO Gulf of Mannar Biosphere Reserve covering an area of 10,500 km2 of ocean with 21 islands and the adjoining coastline. The islets and coastal buffer zone include beaches, estuaries, and tropical dry broadleaf forests, while the surrounding seascape of the Marine National Park (established in 1986) and a 10 km strip of the coastal landscape that include seaweed communities, seagrass communities, coral reefs, salt marshes and mangrove forests form the coastal and marine component of the biosphere reserve on the Indian side of the Gulf of Mannar.

Sri Lankan ‘Proposed’ Biosphere Reserve

On the Sri Lankan side of the Palk Bay there is a semi-enclosed shallow water body between the southeast coast of India and Sri Lanka, with a water depth maximum of 13 m. To the south, a chain of low islands and reefs known as Adam’s Bridge or Rama Setu (Rama’s Bridge), separates Palk Bay from the Gulf of Mannar. The Palk Bay leads to Palk Strait (Figure 3). Palk Bay is one of the major sinks for sediments along with the Gulf of Mannar. Sediments discharged by rivers and transported by the surf currents as littoral drift settle in this sink.

Figure 3: Gulf of Mannar and Palk Straits Source: Drishti IAS & Google Images

On the Sri Lankan side of the Palk Bay, studies are being conducted by the Dugong and Seagrass Conservation Project to establish an additional 10,000 hectares of Marine Protected Area to support the conservation of dugongs and their seagrass habitat in the Gulf of Mannar and Palk Bay. This project will involve the preparation of a multiple-community-based management plan in conjunction with government, fishing communities and the tourism industry.

With this valuable information emerging from projects of this nature, Sri Lanka has real opportunities to create a large marine protected area in the Gulf of Mannar and Palk Bay region and eventually merging them together with the Gulf of Mannar Biosphere Reserve of India to form a trans-boundary biosphere Reserve.

Terrestrial cum Marine Spatial Plan for the Gulf of Mannar and Palk Bay Region

Therefore, an excellent opportunity awaits both the Governments of Sri Lanka and India to collaborate in preparing of a terrestrial and marine spatial plan for this region, a prerequisite before going further on designing and implementing large scale development plans in establishing wind energy farms, mineral sand extraction, fishing industry, oil exploration and tourism development.

Coastal and Marine Spatial Planning (CMSP) is an integrated, place-based approach for allocating coastal and marine resources and space, while protecting the ecosystems that provide these vital resources.

On the Indian side, the Gulf of Mannar Biosphere reserve is well established and functional. On the Sri Lankan side, already there are three DWLC managed protected areas i) Adam’s Bridge Marine National Park (# 29 in the map – 18,990 ha declared in 2015), ii) Vedithalathiv Nature Reserve (# 35 -29,180 ha declared in 2016) and iii) Vankalai Sanctuary ( # 97 -4839 ha declared in 2008) (Figure 4) which can serve as the core zone of the Sri Lankan counterpart of a trans-boundary biosphere reserve. Due to the integrated nature of shallow wetland and terrestrial coastal habitats, Vankalai Sanctuary, in particular is highly productive, supporting high ecosystem and species diversity.

Figure 4: Protected Areas in Norther Sri Lanka Managed by the Department of Wildlife Conservation Source: DWLC

This site provides excellent feeding and living habitats for a large number of water bird species, including annual migrants, which also use this area on arrival and during their exit from Sri Lanka.

Having several coastal and marine protected areas already within the Sri Lankan territory provide an excellent opportunity to establish the Gulf of Mannar – Palk Bay blue-green Biosphere Reserve (Sri Lanka) initially and eventually to join up seamlessly with the already established Gulf of Mannar Biosphere Reserve on the Indian side to create a trans-boundary blue-green biosphere reserve.

This makes perfect sense because unlike sedentary plant species, mobile animal and plant groups (phytoplankton, in particular) do not respect human demarcated territorial boundaries. The provision of a common and unhindered protected coastal and marine passage for their customary movement for food and raising young is therefore of crucial importance in conservation management. Scientific evidence-based selection of additional areas, if necessary and their respective boundaries are best be determined in consultation with expert groups on marine mammals and reptiles, birds, fish, coastal vegetation conservation, sociology and industrial development from both sides of the divide.

Proper spatial planning needs to be done before large-scale development plans are designed and implemented in order to avoid conflicts of interest leading to inordinate delays and teething problems in project initiation. As a priority, the protected blue-green core and buffer regions need to be demarcated for their conservation. This could best be done in this narrow passage of land and water between Sri Lanka and India

( Palk Strait & Gulf of Mannar) by preparing a marine and terrestrial spatial plan along the UNESCO Man and Biosphere conceptual guidelines differentiating core, buffer and transition zones. While the protected areas in the core and buffer zone provide all important ecosystem services that would also serve as breeding ground for fish, crustaceans, marine reptiles, birds and mammals thereby provisioning sustainable industries to be developed in the surrounding transition areas demarcated in the joint spatial plan.

In addition, the Satoyama Global Initiative established by the Japanese at UNESCO as a global effort in 2009 to realise ‘societies in harmony with nature’ in which – Satoumi – specifically referring to the management of socio-ecological production landscapes in marine and coastal regions, is also a good model to be considered for conservation of biodiversity and co-existence between humans and nature.

Final Plea

In order to take this proposal forward from the Sri Lankan side, a number of useful baseline reports are already available including, but not limited to, the following: i. Biodiversity Profile of the Mannar District (CEJ & USAID 2022), ii. The Gulf of Mannar and its surroundings (IUCN 2012), iii) Atlas of Mangroves, Salt Marshes and Sand Dunes of the Coastal Area from Malwathu Oya to Pooneryn in the Northwestern Coastal Region, Sri Lanka (Ecological Association of Sri Lanka, Peradeniya, Sri Lanka, 2020). iv. Integrated Strategic Environment Assessment of the Northern Province of Sri Lanka (CEA 2014).

If this proposal to establish a Trans-boundary Blue-Green Biosphere Reserve in the Gulf of Mannar and Palk Bay is acceptable in principle to the Governments of Sri Lanka and India, it would be ideal if the Man and the Biosphere (MAB) program UNESCO which is an intergovernmental scientific program whose mission is to establish a scientific basis for enhancing the relationship between people and their environments to partner with the relevant Government and non-governmental agencies in both countries in making it a reality. This proposed concept has all the necessary elements for developing a unique sustainable conservation cum industrial development strategy via nature-based solutions while at the same time contributing to both climate change mitigation and adaptation.

by Emeritus Professor Nimal Gunatilleke,
University of Peradeniya

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