Opinion
‘Nitro Raja’: Magic Fertiliser arrives!
By Dr PARAKRAMA WAIDYANATHA
The consignment of nano urea, much spoken about produced by Indian Farmer Fertiliser Corporation (IFFCO}, had just arrived! Locally it is named “Nitro Raja!” Can the imported Raja settle our fertiliser woes, where the ‘local Raja’ has hitherto failed?
What is nano urea, many people ask! For the layman it may best be described as something akin to “Seeni- polkohu” or “Bombai-motai”, where sugar particles are attached to a fibrous material. Similarly, in nano urea, the urea molecules are attached to oligosaccharide (examples, starch and sugar) molecules. This greatly enhances the efficacy of the applied urea to crops.
The advantage is that, whereas urea when applied to the soil, often much of it is wasted through leaching, run-off in rain water and vaporisation, losses are very small with the nano formulation. Even normal urea if applied to plants as a leaf spray in good weather, the losses are far less than application to the soil. Up to a maximum of 5% of chemical nutrients can be applied as foliar spray, and in fact urea is, for example, routinely applied in tea plantations usually mixed with zinc sulphate, which research has reported, to boost crop yields substantially.
Regrettably the imported consignment apparently is exclusively for rice cultivation. Is it because the tea growers were not as vociferous and violent as the rice farmers in their demonstrations and ministerial effigy-burning? Ideally, for the tea growers, too, urea is critically important. As most would have applied all nutrients over the years, the soil reserves of nutrients should suffice to tide over an year or more except for nitrogen, the most yield determining nutrient; and the current huge tea crop losses could have been saved, if at least urea in whichever form were supplied to the tea industry.
The critical issue is, however, whether at the recommended rate, the imported nano urea could effectively meet the crop nitrogen demand. It is imported in 500 ml bottles and each bottle content, the advertisement says, is equivalent to a 50 kilo bag of normal fertiliser urea. Nevertheless, it is further stated in the advertisement that the contents has a nitrogen(N) concentration of only 4%, whereas normal urea has 46%.
Meeting Demand?
Let us see whether the supplied nano urea can meet the crop nitrogen demand at the prescribed application rate. The national average yield of rice is now 5 tons /hectare. Therefore, an average rice crop by way of grain and straw removes about 80 kg/ha, and the normal rate of application of nitrogen for a good rice crop is 100kg/ha . So, in whatever way the crop is fertilised (with nano urea or normal urea) a 5 ton rice crop/ha should remove a minimum of 80 kg of nitrogen. Theoretically, however, the recommended nano-urea formulation imported can only provide 20 grams of nitrogen per 500 ml bottle, and to provide the requisite nitrogen of 80kg/ha to the crop, therefore, 4000 such bottles should be applied! The cost of a 500 ml bottle is reported to be Indian Rs 240, which is about local Rs 500. Theoretically then, the nano fertiliser per crop to provide the entire crop nitrogen requirement should cost two million rupees! Can this nano urea then practically meet the total crop nitrogen demand ?
The crux of the matter is that, in India, where nano urea is used, usually a basal application of conventional urea is made to the crop, and nano urea is only sprayed at mid- maturity as a foliar spray for boosting the crop.
The other serious concern is that when nano urea is spayed as the crop is growing, the emerging weed growth in the absence, now, of the two standard herbicides used in rice, one before crop emergence (usually Propanil) and the other ( MCPA )when the crop is in early growth(post emergent), could be substantial. Nearly 95% of the rice growers broadcast seed, and hand weeding is difficult in such crops. Row seeding is highly labour demanding and row seeders are costly. Much of these weeds are highly competitive C4 grasses and sedges, which too will benefit from the foliar nano urea spray and increase the competitiveness, reducing the crop yield!
One of the growing concerns today, globally, in the fertiliser scenario is, not whether it is organic or chemical, but with the grain production anticipated to increase by at least 40% in the next decade and 60% of the nitrogenous fertiliser used for it, the devastating environmental AND pollution issue . Many argue the answer is in cutting down meat consumption as bulk of the grain in the developed world is used as animal feed!
However, there is already technology generated for improving N management practices at the farm level, and nitrogen uptake efficiency (NUE) increases of 36% and 32% have been achieved in the U.S and Japan respectively in the last few decades; one of them being nano fertilisers. With novel plant breeding and fertisier technologies many scientists envision reaching 90-100% NUE in the near future.
Opinion
Panadura debate: special exhibition most welcome
The special exhibition displaying original manuscripts relating to the Panadura Debate at Rankoth Vihara is welcome and, as Nishantha Peiris mentions (News, 30 Aug), the debate gained international interest following the publication of a book containing the speeches made in the debate. The credit for this must be given to John Capper, the then editor of the Ceylon Times. He published an account of each day’s proceedings in his paper and the full text of the speeches in a book entitled ‘Full Account of the Buddhist Controversy Held at Pantura in August 1873.
The preface of the book stated: ‘In the belief that an authentic account of the Controversy which took place at Pantura in August last, between a Buddhist Priest and two Ministers of the Protestant religion, will be read with interest by a large number of persons here and in Europe. I have produced the proceedings in the present form. The report has been revised by the respective disputants, so that it may be taken as a correct account of what passed’.
Capper’s book was picked up by J M Peebles who was in India, who then published an extended version in the United States. If an original copy of Capper’s book is available in Sri Lanka, it should be exhibited in the Rankoth exhibition.
Yours faithfully,
Dr R P Fernando,
19 Danetree Close,
Epsom UK
Opinion
In Memory of Dr Upatissa Pethiyagoda
It is with a deep sense of sadness that I record the passing of Dr Upatissa Pethiyagoda, who died on 27 August 2026 at the age of 94. To many, he was a distinguished scientist, accomplished administrator, diplomat and public intellectual. To me, he was much more than that.
Dr Pethiyagoda was a proud product of Trinity College, Kandy. At a time when a first class in Botany was a rarity, he obtained one and subsequently pursued postgraduate studies in London. His scientific career reflected not only his knowledge but, more importantly, an enquiring and restless mind that was never satisfied with simply accepting what was known.
In the 1970s, he headed the Plant Physiology Department of the Tea Research Institute of Sri Lanka. He was part of a formidable team of scientists that included Drs R L de Silva, R L Wickramasinghe, P Sivapalan, Tilak Wettasinghe and W Danthanarayana. They were scientists who contributed enormously to the development of the tea industry in Sri Lanka, and Dr Pethiyagoda stood comfortably among them.
In 1978, he moved to the Coconut Research Institute as its Director. It was there that I had the privilege of working with him. Those years left a lasting impression on me.
Dr Pethiyagoda was, in every sense, a complete scientist. Although his formal specialisation was plant physiology, he was remarkably comfortable discussing almost anything scientific. What distinguished him was his curiosity. He questioned the science behind the ordinary things that most of us simply accepted. I remember his asking questions such as, why is an orange green in Sri Lanka? It was typical of him: an apparently simple observation would lead him to ask what lay behind it.
That curiosity never left him.
After his tenure at the CRI, he undertook an FAO assignment in the Middle East, working on the improvement of date palms. There he was exposed to agriculture under conditions of severe water scarcity. He pursued this further during a visit to Israel, learning about agronomic practices suited to such environments. Later, when he worked with the Mahaweli Authority, he was able to translate that knowledge into practice, introducing high-value horticultural crops to Systems B and C.
What impressed me was not merely that he acquired knowledge, but that he connected knowledge from one context to another and turned it into practical solutions. His enquiring mind and analytical ability enabled him to do this with remarkable effectiveness.
He was equally impressive as a communicator. Dr Pethiyagoda was an eloquent speaker, whether he was talking about science, agriculture, public policy or the everyday affairs of our country. His speeches were often laced with wit, humour and the occasional tongue-in-cheek remark. But beneath the humour was a very serious mind. He was forthright in his opinions and, importantly, he was not afraid to express them, whatever the possible repercussions.
His contributions to the media demonstrated this courage.
Writing about the travel to London by a former President, he observed:
“Where a person enjoys immunity by virtue of his position, this carries a reciprocal obligation to exercise an abundance of exemplary behaviour. In effect, immunity is best exercised, when the need to invoke it, is never allowed to arise.”
[Immunity Does Not Confer Impunity – Colombo Telegraph]
That was quintessential Pethiyagoda—precise, pointed and impossible to misunderstand.
He was equally outspoken about the government’s decision to ban inorganic fertiliser with ‘immediate effect’. He was deeply distressed by what he believed would be the consequences for farmers, particularly the poorer farming community. He would speak about it almost every day, driven not by political considerations but by his conviction that science and evidence had been disregarded.
In one of his writings on the subject, he remarked:
“What the ‘Vipathmaga’ caper taught us was that advice of sundry ‘Experts’ can be disastrous. Professors of Surgery, clergymen and Pediatricians are not the best equipped to advise on fertilisers, as much as a Soil Scientist should not prescribe treatment for a sick child.’ [Some Lessons That Can Be Learned Even From Disasters – Colombo Telegraph]
And in another article, his frustration was summed up in the memorable words:
“Stupidity, like History, has a way of repeating itself.”
[Unscrambling eggs – Colombo Telegraph]
These were not simply provocative statements. They reflected a scientist who believed deeply that public decisions, particularly those affecting agriculture and the livelihoods of farmers, should be based on evidence and sound scientific advice.
Perhaps, what I will remember most about Dr Pethiyagoda is that his curiosity survived almost to the very end of his life.
Very recently, he was still asking questions and pursuing ideas. He was interested in the possible genetic differences between the waraka and wela varieties of jak, because he wondered whether the wela variety might have commercial potential for cellulose extraction. He was disappointed that he could not find relevant scientific literature in Sri Lanka. More than the particular subject, what struck me was that at 94 he was still thinking about a scientific question, looking for evidence and wondering whether an apparently ordinary resource could have an important national application. He lamented the lack of interest among scientists and academics in such questions of national importance. That concern, too, was very much part of who he was.
Dr Pethiyagoda also served as President of the National Academy of Sciences, Sri Lanka. Unfortunately, he was unable to complete his term because he was appointed Ambassador to Italy, with representation at the Food and Agriculture Organization in Rome. Even in that role, he remained very much the scientist. I understand that he made a significant contribution to FAO discussions. As Ambassador, he also had the unenviable task of entertaining Sri Lankan Ministers of Agriculture who attended FAO sessions. I know from my own conversations with him that those informal dinners were not merely social occasions. He would discuss agricultural issues with the Ministers, and I have little doubt that his views—and the force with which he expressed them—sometimes influenced their thinking.
Looking back, what I admired most about Dr Pethiyagoda was not any particular position he held or any particular achievement. It was the way he thought.
He questioned.
He analysed.
He connected ideas.
He challenged conventional wisdom.
And he was willing to say what he believed to be true.
He also demonstrated that science should not remain confined to laboratories, research papers or academic institutions. For him, science was a way of looking at the world and, ultimately, a means of improving the lives of people.
It is perhaps ironic that, only a few months ago, he wrote about “The Cost of Dying”, as distinct from the “Cost of Living”. In that article, he reflected on the manner in which our mortal remains should be disposed of, observing: “I am in two minds regarding the manner in which the mortal remains are disposed of, ‘according to the will of the deceased’. But with the cessation of the breath, ownership or tenancy ceases.” Even in contemplating death, he brought his characteristic questioning mind to the subject. What particularly caught my attention, however, was his explanation of the Buddhist practice of holding dânes (almsgivings) for monks of the local temple in the seventh day and third month following a death. I had never really thought about the significance of this practice before. That, too, was typical of Dr Pethiyagoda: he could take something that we had accepted as ordinary and familiar and make us stop, think and see it differently.
His passing has created a colossal vacuum in Sri Lanka’s scientific community. People of his intellectual breadth, curiosity, courage and independence are rare. We may not always have agreed with everything he said, but we could never doubt that he had thought deeply about it and that he had the courage of his convictions.
For those of us who had the privilege of knowing him, there is sadness in his passing. But there is also gratitude—for having known such an extraordinary mind, for having learnt from him, and for having witnessed at close quarters his unwavering commitment to science and to the development of our country.
I shall remember Dr Pethiyagoda with great affection and immense respect.
Ranjith Mahindapala
Past President, National Academy of Sciences of Sri Lanka.
Opinion
A neighbour’s view of India’s strategic strengths
What India chooses to do with the strategic freedom it has built over eight decades may be the defining question of its next phase
by Milinda Moragoda
In the emerging global economy, countries will increasingly seek multiple sources of energy, technology, capital, minerals and markets. India can contribute by helping create an open network rather than another exclusive bloc.
As India marks eight decades of Independence, its strategic position has changed almost beyond recognition. Yet the central question of strategic autonomy remains. What India chooses to do with the strategic freedom it has built over eight decades may be the defining question of its next phase.
India has spent the past decade expanding its strategic choices — deepening ties with the US, Europe and Japan while maintaining important ties with Russia and strengthening engagement with the Gulf, Africa and Southeast Asia. Australia and New Zealand are also becoming increasingly important partners in the wider Indo-Pacific. At the same time, India has sought a larger voice for the developing world in international institutions. Strategic autonomy has traditionally been understood in diplomatic terms: the ability to maintain freedom of action without being drawn into competing power blocs. In an increasingly interconnected world, however, that freedom will depend just as much on economic choices.
The objective should be strategic interdependence — building sufficiently diverse relationships that dependence on any one country or economic system does not become a vulnerability. India is unusually well placed to pursue this. Its geography connects the Gulf and wider West Asia, the manufacturing economies of Asia, Africa across the Indian Ocean and the Eurasian space extending through Russia. The opportunity, therefore, is to become a connector between economies increasingly fragmented by geopolitical competition.
India’s relationship with Japan is extending into advanced manufacturing, technology, energy, semiconductors and critical minerals. Its engagement with the US is deepening across technology, investment, advanced manufacturing, energy and strategic cooperation, while its engagement with Europe is becoming increasingly economic and technological. Its relationships with the Gulf are expanding beyond energy into investment and connectivity. Australia and New Zealand add an important southern dimension to its wider Indo-Pacific engagement, while Southeast Asia provides pathways into wider Asian production networks.
Russia remains an important part of this equation. India’s continuing engagement with Moscow, alongside its deepening relationships with Washington, Tokyo, Europe and the Gulf, demonstrates that strategic autonomy gives India the flexibility to maintain important relationships across geopolitical divides.
China inevitably occupies a special place in this landscape. India’s answer cannot be either excessive dependence or complete separation. It will require strengthening domestic capabilities, diversifying supply chains and building partnerships elsewhere, while retaining space for engagement where interests permit.
India possesses another asset that few countries can match: a large, globally active and influential diaspora. Yet the diaspora can also present challenges, as political currents within these communities do not always align with India’s interests and can occasionally create sensitivities in its relations with host countries. The greater opportunity lies in nurturing the economic, intellectual and cultural connections the diaspora can create, while respecting its diversity and independence. In the emerging global economy, countries will increasingly seek multiple sources of energy, technology, capital, minerals and markets. India can contribute by helping create an open network rather than another exclusive bloc.
Ports, shipping routes, energy corridors, digital infrastructure, supply chains and trade agreements increasingly shape strategic influence. India’s challenge is to bring these strands together without turning them into a closed sphere of influence.
India’s economic rise will be more sustainable if other countries see themselves as participants in its growth rather than simply as markets for it. The value for India lies in making these relationships complementary rather than choosing among them. India’s leadership of the Global South can now move beyond representation in international forums towards creating an international economic environment in which developing countries have greater choices. India’s own experience is relevant here. It has moved from a relatively closed economic model towards deeper global integration while retaining a strong emphasis on domestic capability. The lesson is that openness and strategic autonomy need not be contradictory.
As the G20 meets again in Miami in December, India can continue to argue that the Global South should not merely seek greater representation within existing institutions, but a greater stake in shaping the economic networks and institutions of the future. An economically integrated Indian Ocean could allow countries such as Sri Lanka, Bangladesh and the Maldives to participate more deeply in regional supply chains, logistics, energy, tourism, technology and services. Influence based on shared prosperity is more durable influence based on dependence. India’s strategic opportunity, therefore, lies in becoming one of the principal connectors of a changing world.
(Milinda Moragoda is founder of the Pathfinder Foundation, strategic affairs think tank, and can be contacted via email @milinda.org.)
Courtesy Hindustan Times
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