Opinion
Nano nitrogen and nano urea
By Prof. O.A. Ileperuma
Concerns about the non-availability of chemical fertiliser are widespread. Agricultural communities and farmers are venting their anger at the minister and the government. Farmers have even threatened to abandon their Maha paddy cultivation, and such action will have a devastating effect on our food security. This will severely affect the self-sufficiency of rice we have achieved through the dedicated efforts of our rice breeder scientists in the Agriculture Department. The earlier contention of going fully organic with compost was an ill-advised decision taken by the Government. Recently, European Union countries decided to go for 25 percent organic by 2030, understanding what is possible and what is impossible. I have dealt with the futility of moving towards 100 percent compost in my article in The Island on 01 May, 2021, since compost does not provide the required nutrients in sufficient amounts for healthy plant growth.
The authorities have finally decided to import ‘nano nitrogen’ liquid fertiliser from India where it is undergoing field trials right now. Although the authorities have arbitrarily called this nano nitrogen, it is really a product best classified as nano urea. The manufacturer itself has labelled the product nano urea and our Agriculture Ministry officials have ‘invented’ a new label calling the liquid fertiliser nano nitrogen. Our Minister of Agriculture has been misled by the officials who painted the story that we are importing nano nitrogen and not nano urea. He appears so sure of the name of this product that he went on to complain to the CID against MP Patali Champika Ranawake who pointed out, quite correctly, that it is not nano nitrogen but nano urea. Further, MP Ranawaka has publicly accused Government politicians of bloating the price from $ 7.74 per litre at the manufacturer to $25 per litre in Sri Lanka requesting an explanation for such a huge price difference.
It remains to be seen whether this fertiliser is effective for our agriculture, encompassing all sectors in addition to rice. There are several misconceptions among our learned authorities about whether nano nitrogen imported from India is chemical or organic, meaning a natural product. It is important for the general public to know about the nature of this nano nitrogen fertiliser. Some important facts are: The meaning of nano, and how the so-called nano nitrogen liquid is made and the results of field trials in India.
Nanoparticles are extremely small particles defined as those having diameters in the range of one to 100 nanometres. A nanometre (nm) is one billionth of a metre and they cannot be seen with the naked eye. Milk, for example, is an emulsion with casein micelles of sizes between 50 to 600 nm. Nano nitrogen liquid imported from India is prepared by first mixing conventional urea with hydroquinone. This mixture is then sprayed onto calcium cyanamide powder and finally dispersed into nanosized particles. The final product carries one percent hydroquinone, 10 percent calcium cyanamide and close to 90 percent urea. The resultant nanoparticles are reported to possess sizes ranging from 20 to 50 nm. Calcium cyanamide eventually reacts with water giving ammonia and it is one of the oldest nitrogen fertilisers used.
Nano nitrogen was discovered by Dr. Ramish Ralia while working in an American laboratory. He joined the Indian Farmers Fertiliser Cooperative Limited (IFFCO), one of India’s biggest cooperative societies which has now supplied nano urea to Sri Lanka. According to field trials conducted by IFFCO, they claim that a 500 millilitre bottle of nano urea can replace a 45 kg bag of urea. This is hard to believe since this bottle adds only about 20 g of urea because it contains only four percent nitrogen while a 45 kg bag of urea provides 21 kg of nitrogen. Even if 40 percent of the conventional urea added is absorbed by plants it works out to 8.4 kg of nitrogen taken up by the plants which is over 400 times provided by nano urea. Unlike urea which is applied to soil, nano urea liquid is sprayed directly on to leaves where it gets absorbed through the stomatal openings of leaves.
In spite of the projected advantage of nano urea over conventional urea, it cannot supply the initial nitrogen requirements for growing rice, vegetables and other crops. Urea is needed at the initial stage of planting. Nano urea is useful only at a later stage of plant growth where the plants have developed leaves. Application of nano urea at the initial stage is scientifically meaningless and a wasteful exercise. Based on the requirement of urea stipulated by the Agriculture Department, the urea requirement is 225 kg per hectare for the dry zone. At the current price of urea which is Rs 3,430 per 50 kg (without subsidy), what a farmer has to incur is Rs. 15,435, for the dry zone. For the wet zone where the requirement of urea is only 140 kg per hectare, the expenditure would be Rs. 9,604. To provide the same nitrogen requirement to one hectare of paddy fields a farmer has to spray 1250 litres of nano urea. According to Government estimates with each litre of nano urea costing Rs. 1,250, the total cost comes to around Rs. 156,250 per hectare. However, the Government is distributing only 2.5 litres of nano urea per hectare which is totally insufficient and will severely reduce rice production. Even if the Government distributes the imported nano urea free of charge, ultimately the money comes from public funds which is an utter waste of taxpayers’ money. Why the Agriculture Ministry officials do not see this simple arithmetic is astonishing and unpardonable. Moreover, field trials carried out in India are not sufficient for a critical assessment of the efficacy of nano urea and further field trials are necessary in Sri Lanka to determine the accuracy of the Indian claims.
We should also consider the health effects due to exposure to nanoparticles such as those in nano urea. The world has yet to understand the health effects of nanofertilisers and inhalation of such small particles into the lung can have adverse health effects. Air pollution studies have revealed that the most dangerous of all air pollutants are fine particles which go right into the alveoli of lungs and cause bronchitis, chronic obstructive pulmonary disease (COPD), heart diseases and even cancer.
Sri Lankan scientists have reported a different form of nano urea way back in 2012. The work of Prof. Nilwala Kottegoda and her team at the Sri Lanka Institute of Nanotechnology revealed that when urea is adsorbed on hydroxyapatite nanoparticles and applied to paddy fields, it acts as a slow release nitrogen fertiliser resulting in the gradual release of urea to the plant compared to direct application of conventional urea which gets leached out to an extent of about 60 to 70 percent. In this manner the amount of urea required to be applied to soil can be conveniently reduced to around half of what is applied now. The hydroxyapatite can be readily prepared from the Eppawala phosphate deposit. Furthermore, the apatite also decomposes slowly yielding much needed phosphorus nutrients for the healthy growth of plants. Unfortunately, our Government did not use this valuable discovery by Sri Lankan scientists which is often the case with local inventions and discoveries. Politicians take the risk of fast tracking things for short term political gains; scientists come out with suggestions after careful weighing of benefits and disadvantages. Obviously the 10-year agriculture plan of ‘Vistas of Prosperity’ suffered the same fate in the hands of politicians, over the ‘Wiyathun’ who planned it.
While the government is talking about nitrogen and has even imported potash, there is a missing link in the NPK (nitrogen, phosphorus and potassium) formula of fertilisers and what is missing is phosphorus. Traditionally, phosphorus nutrient has been supplied through imported triple superphosphate. Successive governments have talked about making phosphate fertiliser using our own Eppawela rock phosphate deposit. This is restricted to NATO (no action, talk only) since some unseen hands are preventing this from being implemented. This writer along with other experts submitted a comprehensive proposal for the manufacture of single superphosphate (SSP) fertiliser from Eppawala phosphate to the Minister of Agriculture in 2018. There are at least two cabinet decisions empowering Lanka Phosphate Limited to undertake this project but no action has been taken to commence the local manufacture of phosphate fertiliser.
It is not clear what the Government is planning, regarding the supply of the essential triple superphosphate. Initial fertiliser (‘Mada pohora’) requires urea, triple superphosphate and potash. In the same way babies require calcium and phosphorus for the development of bones, supplied through milk, plants too need phosphates for healthy growth. Phosphorus deficiency causes stunted growth and hence poorer yields. Unlike urea, which decomposes giving oxides of nitrogen after a few days, phosphate binds to the soil and remains in the soil for a much longer period and hence farmers may not immediately need phosphate during one season.
It is of no use to supply nano urea now at the planting stage. This will only promote weed growth and farmers have no way of controlling them in the absence of weedicides. It will only be useful at a later stage as ‘Bandi Pohora’ when the leaves have fully developed. Even the manufacturer claims that it is used as a supplementary fertiliser and will not replace the initial requirement of nitrogen fertiliser. Hence the farmers, their agitation fuelled by extensive experience, will most likely continue to suffer with their livelihoods destroyed. At the end the agricultural productivity of the country would be severely affected.
Opinion
The shadow of a Truman moment in the Iran war
Wars often produce moments when leaders feel compelled to seek a decisive stroke that will end the conflict once and for all. History shows that such moments can generate choices that would have seemed unthinkable only months earlier. When Harry S. Truman authorised the atomic bombings of Hiroshima and Nagasaki in 1945, the decision emerged from precisely such wartime pressures. As the conflict involving the United States, Israel and Iran intensifies today, the world must ensure that a similar moment of desperate calculation does not arise again.
The lesson of that moment in history is not that such weapons can end wars, but that once the logic of escalation begins to dominate wartime decision-making, even the most unthinkable options can enter the realm of strategic calculation. The mere possibility that such debates could arise is reason enough for policymakers everywhere to approach the present conflict with extreme caution.
As the war drags on, both Donald Trump and Benjamin Netanyahu will face mounting pressure to produce decisive results. Wars rarely remain confined to their original scope once expectations of rapid victory begin to fade. Political leaders must demonstrate progress, military planners search for breakthroughs, and public narratives increasingly revolve around the need for a conclusive outcome. In this environment, media speculation about “exit strategies” or “off-ramps” for Washington can unintentionally increase pressure on decision-makers. Even well-intentioned commentary can shape the climate in which leaders make decisions, potentially nudging them toward harder, more dramatic actions.
Neither the United States nor Israel lacks the technological capability associated with advanced nuclear arsenals. The nuclear arsenals of advanced powers today are far more sophisticated than the devices used in 1945. While their existence is intended primarily as deterrence, prolonged wars have historically forced strategic communities to examine every available option. Even the discussion of such possibilities is deeply unsettling, yet ignoring the pressures that produce such debates can be dangerous.
For that reason, policymakers and societies on all sides must recognise the full range of choices that prolonged wars can place before leaders. For Iran’s leadership and its wider strategic community, absorbing this reality may be essential if catastrophic escalation is to be avoided. From Tehran’s perspective, the conflict may well be seen as existential. Yet history also shows that wars framed as existential struggles can generate the most dangerous strategic decisions.
The intellectual climate in Washington has also evolved. A number of influential voices in Washington now argue that the United States has become excessively risk-averse and that restoring global credibility requires a more assertive posture. Such arguments reflect a broader shift toward the language of renewed deterrence and strategic competition. Yet this very logic can make it politically harder for leaders to conclude conflicts without visible demonstrations of strength.
The outcome of this conflict will also be watched closely by other major powers. In 1945, the atomic decision was shaped not only by the desire to end a brutal war but also by the strategic message it sent to rival states observing the emergence of a new geopolitical era. Today, other significant powers will similarly draw lessons from how the United States manages both the conduct and the conclusion of this conflict.
This is why cool judgment is essential at this stage of the war. Whether the original decision to go to war was wise or ill-advised is now largely beside the point. Once a conflict has begun, the overriding priority must be to prevent escalation into something far more dangerous.
In such moments, the international system can benefit from the quiet diplomacy of actors that retain a degree of strategic autonomy. Among emerging nations, India stands out as a major emerging power in this regard. Despite its energy dependence on the Gulf and deep economic engagement with the United States, India has consistently demonstrated a capacity to maintain independent channels of communication across geopolitical divides.
This unique positioning may allow New Delhi to explore, discreetly and without public fanfare, avenues for de-escalation with Washington, Tel Aviv and Tehran alike. At moments of heightened tension in international politics, the world sometimes requires what might be called an “adult in the room”: a state capable of engaging all sides while remaining aligned exclusively with none.
If the present conflict continues to intensify, the value of such diplomacy may soon become evident. The most important lesson from 1945 is not only the destructive power of nuclear weapons but the pressures that can drive leaders toward choices that later generations struggle to comprehend. History shows that when wars reach their most desperate phases, restraint remains the only safeguard against catastrophe.

(Milinda Moragoda is a former Cabinet Minister and diplomat from Sri Lanka and founder of the Pathfinder Foundation, a strategic affairs think tank, can be contacted via email@milinda. This was published ndtv.com on 2026.03.1
by Milinda Moragoda
Opinion
Practicality of a trilingual reality in Sri Lanka
Dr. B.J.C. Perera (Dr. BJCP) in his article ‘Language: The symbolic expression of thought’ (The island 10.03.2026) delves deeper into an area that he has been exploring recently – childhood learning. In this article he writes of ‘a trilingual Sri Lanka’, reminding me of an incident I witnessed some years ago.
Two teenagers, in their mid to late teens, of Muslim ethnicity were admitted to the hospital late at night, following a road traffic accident. They had sustained multiple injuries, a few needing surgical intervention. One boy had sustained an injury (among others) that needed relatively urgent attention, but in itself was not too serious. The other had also sustained a few injuries among which one particular injury was serious and needed sorting out, but not urgently.
After the preliminary stabilisation of their injuries, I had a detailed discussion with them as to what needed to be done. Neither of them spoke Sinhala to any extent, but their English was excellent. They were attending a well-known international school in Colombo since early childhood and had no difficulty in understanding my explanation – in English. The boys were living in Colombo, while their father would travel regularly to the East (of Sri Lanka) on business. The following morning, I met the father to explain the prevailing situation; what needs to be done, urgency vs. importance, a timeline, prioritisation of treatment, possible costs, etc.
Doctor’s dilemma
The father did not speak any English and in conversation informed me that he had put both his boys into an International School (from kindergarten onwards) in order to give them an English education. The issue was that the father’s grasp of Sinhala was somewhat rudimentary and therefore I found that I could not explain the differences in seriousness vs, urgency and prioritisation issues adequately within the possible budget restrictions. This being the case and as the children understood exactly what was needed, I then asked the sons to ‘educate’ the father on the issues that were at hand. The boys spoke to their father and it was then that I realised that their grasp of Tamil was the same as their father’s grasp of Sinhala!
In the end I had to get down a translator, which in this case was a junior doctor who spoke Tamil fluently; explained to him what was needed a few times as he was not that fluent in English, certainly less than the boys, and then getting him to explain the situation to the father.
What was disturbing was having related this episode at the time to be informed that this was not in fact not an isolated occurrence. That there is a growing number of children that converse well in English, but are not so fluent in their mother tongue. Is English ‘the mother tongue’ of this ‘new generation’ of children? The sad truth is no and tragically this generation is getting deprived of ‘learning’ in its most fundamental form. For unfortunately, correct grammar and syntax accompanied with fluency do not equal to learning (through a language). It is the natural process of learning two/three languages (0 to 5 years) that Dr. BJCP refers to as being bilingual/trilingual and is the underlying concept, which is the title of Dr. BJCP’s article ‘Language: The symbolic expression of thought’.
“Introduction into society”
It is critical to understand at a very deep level the extent and process of what learning in a mother tongue entails. The mother’s voice is arguably the first voice that a newborn hears. Generally speaking, from that point onwards till the child is ‘introduced into society’ that is the voice he /she hears most. In our culture this is the Dhorata wedime mangalyaya. Till then the infant gets exposed to only the voices of the immediate /close family.
Once the infant gets exposed to ‘society’ he /she is metaphorically swimming in an ocean of language. Take for example a market. Vendors selling their wares, shouting, customers bargaining, selecting goods, asking about the quality, freshness, other families talking among themselves etc. The infant is literally learning/conceptualizing something new all the time. This learning process happens continuously starting from home, at friends/relatives’ houses, get-to-gathers, festivals, temples etc. This societal exposure plays a dominant role as the child/infant gets older. Their language skills and vocabulary increase in leaps and bounds and by around three years of age they have reached the so-called ‘language explosion’ stage. This entire process of learning that the child undergoes, happens ‘naturally and effortlessly’. This degree of exposure/ learning can only happen in Sinhala or Tamil in this country.
Second language in chilhood
Learning a second language in childhood as pointed out by Dr BJCP is a cognitive gift. In fact, what it actually does is, deepens the understanding of the first language. So, this-learning of a second language- is in no way to be discouraged. However, it is critical to be cognisant of the fact that this learning of the second language also takes place within a natural environment. In other words, the child is picking up the language on his own. As readily illustrated in Dr. BJCP’s article, the home environment where the parents and grandparents speak different languages. He or she is not being ‘forcefully taught’ a language that has no relevance outside the ‘environment in which the second language is taught’. The time period we (myself and Dr. BJCP) are discussing is the 0 to 5-year-old.
It does not matter whether it is two or three languages during this period; provided that it happens naturally. For as Dr. BJCP states in his article ‘By age five, they typically catch up in all languages…’ To express this in a different way, if the child is naturally exposed to a second /third language during this 0 to 5-year-old period, he /she will naturally pick it up. It is unavoidable. He /she will not need any help in order for this to happen. Once the child starts attending school at the age of 5 or later, then being taught a second language formally is a very different concept to what happens before the age of 5.
The tragedy is parents, not understanding this undisputed significance of ‘learning in/a mother tongue’, during the critical years of childhood-0 to 5; with all good and noble intentions forcefully introduce their child to a foreign tongue (English) that is not spoken universally (around them) i. e., It is only spoken in the kindergarten; not at home and certainly nowhere, where the parents take their children.
Attending school
Once the child starts attending school in the English medium, there is no further (or minimal) exposure to his /her mother tongue -be it Sinhala or Tamil. This results in the child losing the ability to converse in his/her original mother tongue, as was seen earlier on. In the above incident that I described at the start of this article, when I finally asked the father did he comprehend what was happening; his eyes filled with tears and I did wonder was this because of his sons’ injuries or was it because his decisions had culminated in a father and a son/s who could no longer communicate with each other in a meaningful way.
Dr BJCP goes on to state that in his opinion ‘a trilingual Sri Lanka will go a long way towards the goals and display of racial harmony, respect for different ethnic groups…’ and ‘Then it would become a utopian heaven, where all people, as just Sri Lankans can live in admirable concordant synchrony, rather than as a splintered clusters divided by ethnicity, language and culture’. Firstly, it must be admitted from the aspect of the child’s learning perspective (0 to 5 years); an environment where all three languages are spoken freely and the child will naturally pick up all three languages (a trilingual reality) does not actually exist in Sri Lanka.
However, the pleasant practical reality is that, there is absolutely no need for a trilingual Sri Lanka for this utopian heaven to be achieved. What is needed is in fact not even a bilingual Sri Lanka, but a Sri Lanka, where all the Sinhalese are taught Tamil and vice versa. Simply stated it is complete lunacy– that two ethnic communities that speak their own language, need to learn another language that is not the mother tongue of either community in order to understand one another! It is the fact that having been ruled by the British for over a hundred years, English has been so close to us, that we are unable to see this for what it is. Imagine a country like Canada that has areas where French is spoken; what happens in order to foster better harmony between the English and French speaking communities? The ‘English’, learn to speak French and the ‘French’ learn to speak English. According to the ‘bridging language theory of Sri Lanka’, this will not work and what needs to happen is both communities need to learn a third language, for example German, in order to communicate with one another!
Learning best done in mother tongue
eiterating what I said in my previous article – ‘Educational reforms: A Perspective (The Island 27.02.2026) Learning is best done in one’s mother tongue. This is a fact, not an opinion. The critical thing parents should understand and appreciate is that the best thing they can do for their child is to allow/encourage learning in his/her mother tongue.
This period from 0 to 5 years is critically important. If your child is exposed naturally to another language during this period, he /she will automatically pick it up. There is no need to ‘forcefully teach’ him /her. Orchestrating your child to learn another language, -English in this instance- between the ages of 0 to 5 at the expense of learning in his /her mother tongue is a disservice to that child.
by Dr. Sumedha S. Amarasekara
Opinion
Tribute to Vijitha Senevirathna
APPRECIATION
On Friday, the 20th of March, Vijitha Senevirathna would have celebrated his 85th birthday if not for his sad passing away nearly a year ago.
The passing of Vijitha was a moment of great sorrow to all who knew him.
He was my classmate from Montessori to pre-university at Maris Stella College, Negombo. As a Maristonian, Vijitha excelled in his academic studies.
Eventually, he entered the Law College and practised as an Attorney-at-Law and Notary Public for over 50 years.
As an Attorney-at-Law, Vijitha earned the respect of the judiciary and a wide circle of clients. He upheld the highest and most cherished values of the legal profession and earned the trust of all who knew him. His 50th anniversary in the noble profession of law was celebrated with much pageantry, amidst a distinguished gathering of friends, relations, clerics, and the rich and famous of Sri Lanka.
Vijitha dearly loved his proud wife Nirmali and his six children, who are in the highest professions in Sri Lanka. He inculcated among his children professional efficiency, diligence, and honesty.
We who associated closely with Vijitha miss his warm friendship, sense of humor, and animated conversation. He was a raconteur, and people gathered around him and listened to his narrations and tales of yore, especially at the many celebrations at his residence in Dehiwala, where the waters of Scotland flowed generously.
I have personally admired Vijitha’s patience, grit, and lifetime achievements, despite a physical dysfunctionality he suffered over his lifetime.
For Vijitha, the song has ended, but the melody lingers on, in the words of the popular composer Irving Berlin.
Merrick Gooneratne
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