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Lifting glyphosate ban : Facts and Fiction

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Prof. O.A.Ileperuma

Dr. Ranil Senanayake’s criticism (The Island 22/9/2022) of Dr. Parakrama Waidyanatha’s article which appeared in The Island (19/9/2022) on the lifting of the ban on glyphosate is unfair and does not conform to what is already known. Glyphosate was banned without any scientific basis solely for political reasons. Glyphosate use in Sri Lanka can be traced to 1977, when it was permitted to control weeds on tea plantations. Glyphosate was approved for paddy soils in 1998 but paraquat, which was cheaper, was widely used at that time. When paraquat was phased out by the government in 2014, glyphosate came into regular use. The chronic kidney disease in the North-Central Province had been there long before 2014 and glyphosate absolutely has no role in causing the kidney disease. Furthermore, chronic diseases such as the Rajarata kidney disease manifest only after about 15-20 years of continuous exposure to a toxin. Scientific research has shown that glyphosate undergoes total degradation to harmless glycine and phosphate in the soils in about 7 days. Also, these studies reveal that glyphosate binds strongly to soil and there is less likelihood of it getting leached into the irrigation canals and reservoirs. When applied to paddy fields what is important is whether glyphosate goes into the paddy seeds. It is important to realise that paddy is harvested at least two months after the glyphosate is applied and hence there is no likelihood of the rice seeds getting contaminated.

Dr. Senanayake talks about the biomagnificationm, which is valid not only for glyphosate but also to many other poisons which enter our bodies. An earlier study carried out at the University of Peradeniya revealed the presence of ultratrace levels of pesticides in the drinking waters at Peradeniya. These originate in the widespread use of pesticides in the Nuwara Eliya District. These trace levels of pesticides accumulate in the fatty tissues, a process called bioaccumulation. Human body has a remarkable way to get rid of these poisons; the liver acts as the waste treatment plant and these poisons are detoxified in the liver and excreted through the kidney. However, excessive overloading of our bodies with toxic materials can be detrimental to our health. Dr. Waidyanatha correctly points this out when he says that it is the dose that matters. This in no way justifies excessive use of pesticides in agriculture.

Dr. Senanayake should realise that while organic agriculture practised prior to the 1960s in Sri Lanka was still not sufficient to provide enough rice for its population. The population of Sri Lanka was around 7 million in 1948 and it has increased to about 22 million today. Organic paddy farming can at best provide rice for only about 5 million and even during British rule, rice was imported the country starting from the 1920s. Therefore, agrochemicals are a necessary evil to feed a hungry population. The alternative is to import rice from other countries often having elevated levels of heavy metals such as arsenic and cadmium.

As regards the chronic kidney disease, scientific research has firmly established that fluoride in combination with hard water is what causes it. It is certainly not caused by irrigation waters contrary to Dr. Senanayake’s claim. The absence of the disease from Anuradhapura and Padaviya townships, where people consume water from irrigation tanks clearly, shows that all these agrochemicals ending up in reservoirs play no role in causing the kidney disease. Perhaps, he is referring to a publication by agriculturists at the University Peradeniya, who postulated that there were very high levels of cadmium arising from the agrochemicals washed out from the hill country ending up in Rajarata reservoirs. There is absolutely no evidence to suggest that people who consume irrigation waters are affected by the kidney disease. Several independent researchers have rejected these high cadmium levels because the values for cadmium in water determined at several laboratories in Japan, Germany and Sri Lanka using advanced instrumentation obtained values which are thousand times lower. I am aware of the basic errors in the analytical methods used by these agricultural scientists which led to such high values of cadmium and there is no independent confirmation of these results.

A comprehensive study from the Ginnoruwa area in the Mahaweli Zone C clearly establishes the distinctive role played by fluoride and water hardness causing kidney disease. There are two villages in this area, Sarabhoomi located along the banks of the Mahaweli river and Badulupura located at a higher elevation. While Sarabhoomi has zero kidney patients, Badulupura has over 30% of its adults affected by kidney disease. People in Sarabhoomi consume water from the river itself or from shallow wells located close to the river with low levels of fluoride while Badulupura residents get their water from deep wells which are invariably rich in fluoride and hardness. Hence the argument that irrigation water contaminated with the agricultural runoffs from the hill country causes the kidney disease does not explain why Sarabhoomi residents are not affected by this disease.

I have worked on the Rajarata kidney disease from 2003, when it first came to the limelight and visited most of the areas affected and all kidney patients have consumed fluoride rich water without exception. Most of these patients come from areas far away from any major reservoirs. As a result, they had to dig wells in the remote areas and these invariably reach the bed rock and fluoride leaching from the rocks resulted in the excessive fluoride in these wells. In the ancient agricultural civilisations of Sri Lanka, people lived close to the main reservoirs or its canals and used water from these sources and these invariably had low fluoride levels. However, with the colonisation schemes starting from the 1950s people were provided with lands far away from these reservoirs and they had to dig deep wells to provide them with water. This is the reason why this disease is of relatively recent origin.

In one study from Chettikulam, people are affected not only by the kidney disease but also skeletal fluorosis. The provision of purified water to this area resulted in a considerable reduction of progression of the disease and people who could not even stand up are now doing their previous professions. One patient who was asked undergo a kidney transplant is now able to carry out his farming activities and the doctors have now declared that a transplant is no longer necessary. All these people use water from deep wells and there are no irrigation canals nearby. It is patently clear that the high fluoride levels in their drinking water has caused the disease.

One has to be practical in promoting the popular slogan of toxin free agriculture. Decades of dedicated research by our agricultural scientists have resulted in self-sufficiency in rice. Banning agrochemicals will have a disastrous effect on agricultural productivity. We already see the ill effects of the unwise decision to ban agrochemicals in 2019 which has resulted in severe food shortages and escalating prices of agricultural produce. Public should not be misled by fanciful theories of organic agriculture which only help to create unwarranted and unfounded information about kidney disease and other health effects of agrochemicals and glyphosate.



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Opinion

A tariff deal with the US? Make haste slowly

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by Gomi Senadhira

Sri Lanka’s former ambassador to the United States Mahinda Samarasinghe is back in Sri Lanka lobbying for speedier finalisation of a new tariff deal with the United States. According to news reports, delivering the keynote address at the Sri Lanka Institute of Directors’ Annual Meeting last week, he stated, “I have recommended very strongly to the government that we need to conclude the agreement so that we can lock in the very favourable tariff rate that Sri Lanka has got up to now“.

I do not understand why the former ambassador is urging the government to expedite the finalisation of a new tariff deal or what is “the very favourable tariff rate” he refers to in his speech. However, given the ongoing terrible tariff turbulence in the United States and the fragile economic situation in Sri Lanka, I believe, this is not the right time to rush into finalising any trade agreement with the United States. I am also of the opinion that at this juncture Sri Lanka should maintain strategic patience and explore all available options.

Lessons from the countries that rushed for trade deals

To better comprehend this, let’s look at experiences of the countries that rushed to conclude tariff deals with the United States after President Donald Trump declared his “reciprocal tariffs” under the International Emergency Economic Powers Act (IEEPA) in April 2025. As Samarasinghe stated in his keynote, “The bottom line on all these negotiations was that every country that finally agreed to sign the agreement had to give either complete duty-free access for American exports into those markets, or near complete duty-free access.” In exchange for these tariff concessions and other market access commitments these countries managed to get the newly introduced country specific “reciprocal tariffs” reduced.

However, in February 2026, the Supreme Court of the United States (SCOTUS) struck down these “reciprocal tariffs” under the IEEPA. With that, the market access gains these countries received in exchange for complete duty-free access for American exports into their markets evaporated under U.S. domestic law. By moving too fast to conclude bilateral tariff agreements with the United States these countries are now bound to strict obligations whereas the benefits they bargained from the U.S. administration are not worth the paper those were written on.

Sri Lanka’s experience

In April 2025, President Trump declared his “reciprocal tariffs” and labelled Sri Lanka as the worst offender, imposing one of the highest additional duties at 44%. Since then, Ambassador Samarasinghe and other negotiators have managed to negotiate this down to 20%. I do not know what the deal was through which Sri Lanka managed to reduce the 44% tariff to 20% or what we gave in return for this “concession.” However, what we received in return has absolutely no value after the decision by the SCOTUS.

Current state of US tariffs

After the decision by SCOTUS, the U.S. administration introduced a temporary 10% additional tariff on all countries for 150 days. At the end of that period, this 10% tariff was replaced by a new “forced labor tariff ” of 10% to 12.5% on all trading partners under Section 301 of U.S. trade law. Twenty-five U.S. states and several small businesses have already filed lawsuits against these tariffs in U.S. courts. This new “forced labour tariff ” on Sri Lanka was first fixed at 12.5%. Later, after President Anura Kumara Dissanayake issued a gazette notice prohibiting the importation of goods produced using forced labour, it was reduced to 10%. That means Sri Lanka has already made a substantial commitment to receive this “tariff concession,” and I presume our negotiators understand the implications of this commitment.

Make haste slowly

After President Trump imposed 44% “reciprocal tariffs” on Sri Lanka, through an article published in The Island on 25th April 2026 (), I urged the government to engage immediately with the US administration on these tariffs. However, I also emphasised that the best way to move forward was to make haste slowly.

Two millennia ago, Augustus Caesar, the first emperor of Rome, frequently used the phrase, “make haste slowly”, because he detested rashness and haste in his military commanders. It was the recurring guiding maxim that he emphasised throughout his 40-year imperial rule. After 2000 years, this classical oxymoron remains a definitive golden rule for professional trade negotiators. More importantly it is the exact blueprint required when navigating turbulence in trade negotiations with the Trump administration.

The endgame – The most dangerous moment in trade negotiation

Samarasinghe has also stated the agreement is 90% complete. Any experienced trade negotiator should know that the final 10% contains high-stakes provisions and is the most dangerous moment in a trade negotiation. A single misplaced comma or ambiguous product description in a tariff schedule can cost millions through unintended loopholes. Rushing this last stretch to secure a deal can permanently expose Sri Lanka to sudden shifts in American trade policy, heavy compliance costs, or strict enforcement under Section 301 regarding supply-chain labour standards. Hence, this is the time for strategic patience.

(The writer can be reached at senadhiragomi@gmail.com)

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Opinion

Buddhist law and constitutional amendments

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Upon reading the article titled “Prof. Pieris says Buddha Dhamma recognized as source of law under Constitution” (Island, September 12, 2026), the classical Sinhala idiom “Yanne Koheda? Malle Pol” immediately comes to mind. The expression, translating literally to answering “I have coconuts in my bag” when asked “Where are you going?”, underscores a complete disconnect in logic. Because it is uncertain whether the article accurately represents the professor’s precise words, the following critique addresses the contents of the report rather than the speaker himself.

The central premise of the report concerns a statement delivered by the Chief Justice regarding a petition filed against the 22nd Amendment to the Constitution. According to the report, the Chief Justice’s observation that the determination would be made strictly on the basis of established law rather than Buddhist teachings was characterised as a “cavalier dismissal” of the Buddha Dhamma. This assertion carries a host of unexamined assumptions. Had the writer specified precisely which tenets of the Buddha Dhamma were violated, a direct legal or philosophical evaluation could take place. However, no specific Buddhist tenet or law was identified as having been transgressed, and for good reason: no such statutory legal framework exists within the Buddha’s teachings.

To understand the flaw in this argument, one must examine the constitutional context alongside the canonical meaning of the terms involved. Article 9 of the 1978 Constitution of Sri Lanka mandates that the Republic shall give Buddhism the foremost place and that it shall be the duty of the State to protect and foster the Buddha Sasana, while guaranteeing the fundamental rights of all religions under Articles 10 and 14(1)(e).

While “Buddhism” and “Buddha Dhamma” are frequently used as interchangeable terms in casual dialogue, they represent distinct concepts. “Buddhism” is an umbrella term coined by 19th-century Western scholars to classify the global institutionalised religion, incorporating its diverse sects, cultural traditions, rituals, and socio-political histories. Conversely, Sasana is the ancient term designating the structural framework established by the Buddha to preserve and transmit his teachings, comprising the monastic order (Sangha) and its supporting institutions.

In classical Theravada commentarial literature, the Sasana operates as a functional three-tiered structure. It encompasses Pariyatti Sasana, the preservation and study of sacred texts; Paṭipatti Sasana, the practical execution of the doctrine through ethical conduct and meditation; and Paṭivedha Sasana, the direct experiential realization of ultimate truth, or enlightenment. This structural breakdown raises fundamental questions about state capacity. While a state can readily support Pariyatti Sasana through academic institutions, textual preservation, and educational funding, it cannot legislate or enforce Paṭipatti or Paṭivedha. Practical engagement and spiritual realisation are inherently internal, first-person experiences. Expecting the state to codify or guarantee enlightenment is a conceptual impossibility.

Furthermore, the Buddha Dhamma refers specifically to the unconditioned truths of existence and the teachings imparted to realize them, including the Four Noble Truths, the Eightfold Path, and Dependent Origination. As the late Venerable Professor Kotagama Wachissara Thera observed, there is no rigid ideologue or “ism” in the core Dhamma. The teachings do not constitute a system of divine commandments or a legal statute enforced through reward and punishment. Rather, Buddhist ethics function as self-directed guidelines for psychological clarity and moral inquiry. Even the Vinaya Pitaka, which contains explicit rules of conduct, functions as an internal monastic code rather than a civil or criminal law intended for the laity.

Throughout the Pali Canon, guidance regarding governance focuses on the moral character of leadership and the social duties of statecraft rather than rigid legal codification. In discourses such as the Cakkavatti Sihanada Sutta (DN 26), the Buddha observes that social instability and crime cannot be eliminated solely through punitive measures, emphasising instead that states must provide economic opportunities, fair wages, and resource distribution to maintain societal balance. Crucially, in the Maha Parinibbana Sutta (DN 16), the Buddha explicitly highlights the importance of respecting established laws and traditions rather than enacting arbitrary regulations.

The natural laws articulated in the Dhamma, such as the law of cause and effect or the three characteristics of existence, govern all phenomena universally, regardless of legal statutes or personal belief. They are not human laws to be applied or suspended by a court of law. Therefore, characterizing the Chief Justice’s adherence to constitutional jurisprudence over religious doctrine as a “cavalier dismissal” lacks logical and textual foundation. Framing the judiciary’s adherence to legal precedent as an attack on the Dhamma distracts from fundamental constitutional principles and risks misguiding the public for political ends.

Geewananda
Gunawardana,
Ph.D.

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Opinion

Elementary, Dr. Watson!

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by Usvatte

My friend, Sena Thoradeniya, has summoned up energy to raise two questions about my observations in your newspaper on 14 September, 2026. They both referred to comments I made about President Dissanayake and Prime Minister Amarasuriya.

I observed that President Dissanayake, having graduated in physics at Kelaniya, would be familiar with elementary calculus: differentiation and integration. It is a misapprehension to believe that one needs any knowledge of theoretical physics to be familiar with elementary calculus. Nor is it necessary that one needs to have published research for the same purpose. Those were the first lessons in calculus that our Mathematics Master and Principal, Mr. D. A. Devendra taught five of us in the first term 1952 at Hikkaduva Central School. Of the five, two still live and recall those lessons vividly. Dissanayake would surely have learnt them at his school in Anuradhapura. At Kelaniya his teachers probably included Dr. H. Somadasa, two years my junior at Hikkaduva, with a Ph.D. in number theory at Aberytswyth, Wales and Professor (physics) Charles Dahanayke, a renowned teacher of physics and my neighbour in Colombo. Dissanayake is unlikely to have been admitted to Physics at Kelaniya unless he had scored well in mathematics and physics with other subjects. Those elements of calculus have been learnt by millions of young men (and later women) since Isaac Newton and Gottfried Leibnitz. That Dissanayake from a school in Anuradhapura scored high enough to gain admission to Kelaniya to study physics is commendation enough for his intellectual capacity.

All of us know, some personally, the barriers to learning in places like Anuradhapura and Kuliyapitiya, compared to the facilities in Colombo, Galle. Jaffna and Kandy. I used that information to press the point that he was, in learning, entirely different from his predecessors and present competitors. One does not need to research in theoretical physics to know something as simple as the first lesson in calculus. Dirac made his momentous discovery sometime in the 1930s and by 1950 it must have been solidly in the teaching material in schools and universities. Dissanayake graduated in 1995 and, at least, must have heard of Dirac and the ‘God Particle’.

Paul Dirac was a legendary figure among graduate students when I was at Cambridge. He had written the shortest Fellowship and Ph.D. theses. He had had an interesting relationship with his father who was a French speaking Swiss and had insisted that he speaks French at table. Amrtya Sen, who was in 1965 a young Fellow of Trinity College and a teacher in the Economics and Politics Faculty at that time, had also written very short theses and not several volumes as many do.

I read about Higgs Boson in a wonderful book Inward Bound written by physicist Abraham Pais and, in The Science Times (Tuesdays) edited by Gina Kolata of the New York Times, and occasionally in Nature and other popular writings.

I was on the editorial board of Samskrti for some time. Amaradasa Virasinghe and Gananath Obeysekera had started that literary review in 1953 when I was in school and many of us read it avidly. Together with Susil Sirivardana, we decided to expand the scope of the journal to include social studies and science, which effort Sena knew well. The probable readership had increased manifold. In order to help prospective writers to pick up themes to write on, we held a popular lecture, one Saturday a month. I invited Dr. Harini Amarasuriya, then teaching at the Open University, Nawala, to speak to us on the scope and nature of sociology. She made a short fine introduction. That is where I learnt of August Compte. She was invited to a Seminar in Britain on the sociology of education, where I had strayed into from 1971. I did not read her paper, although she had promised to let me have it. I had good reason to respect her scholarship. It would be shocking had she not read Le`vy-Strauss. Many besides anthropologists read Le`vy-Strauss.

Sena stressed the obvious when he said that in public speeches made by these two politicians, there was no evidence of their expertise in physics and sociology. It would have been completely out of place to speak about elementary particles to a crowd in Beruvala or Anuradhapura. But one’s education, in subtle ways, informs the material and the ways that the material is presented in public speeches. Simply listen to Members of Parliament speak and you can guess roughly the level of education each had achieved: grade 2 in primary school or Quondam Professor of Law at Oxford.

I am sorry that Sena identified ‘an exaggerated parade of claims and sheer implausible boasts’ in what I wrote. It is entirely plausible, indeed certain, that an undergraduate in the Department of Physics in any university would be familiar with differentiation and integration.

An unprejudiced reading of my text will demonstrate that it contained no such claims and boasts. Mine was a pretty simple statement of the nature of differences between the present lot in government and the lots that were in power earlier. I related those differences to help understand the line up for and against the 22nd Amendment to the Constitution. and not to build false images of any politician, man or woman. I am too old to set out, even in the formidable company of Sena, on the ‘long march’ to Mao.

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