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Opinion

Nano nitrogen and nano urea

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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.



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Opinion

Future of world religions

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I refer to Dr Upul Wijayawardena’s recent letter on science and religion. I agree with him on the fate of religions in the modern world and would like to add the following observations on the evolution of religion and the advent of AI.

Religious philosophy evolved only in ancient India while it remained static with monotheism in other parts of the world. When the polytheistic Vedic religion arrived with Aryan migration to India, they found the ancient version of Jainism, which may have been practised over four thousand years as evidenced by some figures in meditation posture found in Mohenjo daro. By that time the indigenous religion had already abandoned the creator god or gods but still believed the mind as a permanent entity athman that survived death and continued in a cycle of reincarnation (samsara) due to results of any harmful action (kamma) even unintended performed in life collected in the athman. Salvation to a happy all-knowing permanent state named Kevala could be attained by the athman with extreme degree of self-mortification to destroy the past kamma attached to it, refraining from new kamma and developing the mind by meditation. As observed in progression from Veda to Upanishads the Aryan religion, evolution progressed with adoption of kamma, the cyclic existence of samsara, meditation and ethical behaviour in addition to prayer and sacrifice they practised for moksha.

The Buddha appeared in this philosophical atmosphere and denied both creator god and a permanent entity of athman. His psychology describes human behaviour based on the mind as a stream of changing consciousness. However, he accepted the cyclic existence of samsara; he said he verified the survival of consciousness at death with help of knowledge he gained from meditation. He prescribed a middle path to attain nirvana, a permanent state of happiness, avoiding self-mortification and redefined kamma to intentional activity only, both ethical and unethical resulting in bad and good results. He disagreed with the idea of kamma as the cause of rebirth. Following the Buddha, Vedantha religion reformed god to universal athman or brahman and evolved to modern Hinduism with a mixture of polytheism.

In his description of living beings in the universe, the Buddha has described some with a body made of fine material (brahma beings) in comparison to the gross material body of human and animal beings. One may assume the brahma body may not be carbon based.

The Buddha has also described living beings with physical body only (asannasatta) and another variety with mind only without a body (arupa satta). Therefore, it is not surprising to Buddhists that AI may evolve to become living beings if it develops a readily and freely available mobile source of energy and takes over the world with its superior capacity. AI already has information about Buddhist psychology. With that knowledge ‘AI beings’ may even become Buddhists not given to rituals.

According to the Buddha, brahma beings and asannasatta beings have very long lifespans as their bodies are not subject to decay and illness human beings develop. The new AI beings also may live as long as they wish because they may be able to repair themselves in case of developing physical defects. They would need only ethical behaviour to avoid destroying themselves by peaceful existence if they took over the world, as feared in some quarters.

However, as long as human beings exist in the world with death and uncertainty of what happens after death, they need a religion and rituals to give them psychological support. Even those who profess death is the end of life may have some doubt troubling their mind from time to time and may think of religion in times of adversity.

Ideally, human beings are free to accept one of the many versions of religious philosophies and respect each other’s choice and live in harmony. Unfortunately, extreme degrees of religious versions that cause division, unrest and violence will always continue to exist together with religions in the world.

Upali Abeysiri

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Opinion

The Cream of the Earth: Why Sri Lanka needs a Fruit Consumers Movement

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By Lalin I De Silva

Sri Lanka speaks constantly about hospitals, medicines, food imports, agricultural productivity and the rising cost of living. Yet there is one simple question we rarely ask:

Are we eating enough of the food that our own soil can naturally give us?

Fruit is perhaps one of the finest gifts of the earth to humankind. A ripe mango, banana, papaya, guava or avocado comes to us almost ready to eat. Sunlight, rain, soil, microorganisms, minerals and the labour of a farmer have already done most of the work.

That is why I like to describe fruit as the “cream of the earth.”

This is, of course, not an argument that fruit alone can prevent every disease, or guarantee longevity. Science does not support such exaggerated claims. But there is strong international evidence that regular consumption of fruits and vegetables forms an important part of a healthy diet and is associated with lower risks of several major non-communicable diseases.

Sri Lanka’s own dietary guidance encourages the daily consumption of fruit as part of a balanced diet.

The tragedy is that we live on an island capable of producing an extraordinary variety of fruits, while many families increasingly depend on highly processed foods, sugary drinks and imported snacks.

This deserves national attention.

We Produce — But Do We Connect?

Sri Lanka grows banana, mango, pineapple, papaya, avocado, rambutan, mangosteen, guava, woodapple, beli, pomegranate, durian and many lesser-known indigenous fruits.

Yet our fruit value chain remains fragmented.

The farmer often does not know the final consumer.

The consumer rarely knows the farmer.

Fruit travels through several intermediaries, sometimes suffering poor handling, unnecessary damage and price escalation along the way.

Consumers may not know where a fruit was grown, when it was harvested, whether it was naturally matured or what crop-protection practices were followed.

Meanwhile, a careful farmer, producing exceptional fruit, may receive almost the same farm-gate price as someone producing an inferior product.

That is not value-chain management.

It is precisely this disconnect that a new citizen-led initiative could begin to address.

25 Districts — 25 Consumer Societies

A proposal now emerging is to establish a Pure Sri Lankan Authentic Healthy Fruit Consumers Society in each of Sri Lanka’s 25 districts.

The concept should not become another organisation full of titles, meetings and ceremonial functions.

Its purpose must be practical.

Each district society could bring together consumers, growers, doctors, nutritionists, horticulturists, schools, universities, retailers, hotels, processors and young entrepreneurs.

The first task would be to understand the district itself.

What fruits are grown?

Where are they grown?

When are they available?

Which traditional varieties are disappearing?

Where can consumers purchase genuinely good fruits?

Where are the post-harvest losses?

What do farmers need?

What do consumers actually want?

From this information, each district could eventually develop its own Fruit Map.

Twenty-five district maps could then become a National Fruit Map of Sri Lanka.

From Anonymous Fruit to Traceable Fruit

Imagine buying a mango and scanning a QR code.

You could see the district, grower, variety, approximate harvest date and production information.

You could perhaps even provide feedback on taste.

That may sound futuristic, but the technology already exists.

The problem is not technology.

The problem is that our food system was never designed to connect the person who grows the fruit with the person who eats it.

Traceability could change that.

The principle is simple:

Know your farmer. Know your fruit.

Let the Consumer Lead

For decades, agriculture has largely been driven from the production side.

“How much can we produce?” has been the dominant question.

A healthier agricultural economy should begin with another question:

What does the consumer need, value and trust?

If thousands of consumers deliberately demand fresh, safe, flavorful and traceable Sri Lankan fruit, the message travels backwards through the entire value chain.

Retailers respond.

Farmers respond.

Nurseries respond.

Researchers respond.

Investors respond.

Government eventually has to respond.

That is the real power of an organised consumer movement.

Start With Children

Perhaps the most powerful campaign message could be remarkably simple:

Two Fruits a Day.

Imagine a Sri Lankan child coming home from school and asking:

“What are our fruits today?”

Imagine every school having a small fruit garden.

Imagine children being able to identify 10 Sri Lankan fruits, understand their seasons and know where they are grown.

Such behavioral change cannot be achieved merely by issuing circulars from Colombo.

It must become part of family culture.

Kandy Could Begin

Kandy would be a logical district in which to pilot the concept.

Its climatic diversity, surrounding agricultural communities, educational institutions, hotels, markets and strong plantation heritage provide an excellent testing ground.

A successful Kandy model could then be adapted—not blindly copied—across the other 24 districts.

The objective should ultimately be much larger than selling more fruit.

It is about reconnecting soil, farmer, food, consumer and health.

Sri Lanka does not need to invent every solution from outside.

Sometimes the answer may already be hanging from a tree beside us.

We simply have to recognise its value.

Know Your Farmer. Know Your Fruit. Live Well.

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Opinion

‘Outpost of Empire’

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Review

by Colleen Figg, Editor
and Reviewer – Amazon, New Voices Publishing

“Fernando echoes Macbeth with the line, “There is judgment here.” It captures the question running through the novel: can anyone participate in corruption and remain untouched by it? Beneath this satire is a dark story about power and the danger of believing, that someone else will always pay the price.”

Shavindra Fernando’s Outpost of Empire is a political novel set in the fictional country of Lackadasia. At its heart is a strong idea: an exploration of world politics, terrorism and the ways in which powerful countries manipulate smaller ones. Fernando is clearly writing about political issues that matter deeply to him.

The names immediately establish the book’s satirical character. Lackadasia, Burgherbugaria and the various Klowns suggest a world in which the people and places are exaggerated, but the issues beneath the exaggeration are recognisable. The playful language allows Fernando to approach terrorism, religious conflict and political corruption from an unusual angle.

Henry Stockwell is a central character: an ambassador who arrives in Lackadasia presenting himself as a friend of the country. He believes he understands how power works and treats the country, its politicians and its people as pawns on his personal chessboard. In his arrogance, he never doubts that he controls events rather than being controlled by them. This confidence makes him a compelling figure and in him, we explore the workings of political influence and the potential traps contained therein.

As the story develops, Fernando reveals a political world where causes are adopted when they are useful, people are exploited and discarded, and the truth becomes whatever those in power need it to be. Ordinary people suffer the consequences of decisions made far beyond their reach or knowledge, while those making those decisions continue to justify their actions. Even the people who help keep this world running may not be as important or as safe as they imagine.

Stockwell brings this idea into focus. He recognises corruption in others and willingly takes part in it himself, yet he cannot see that he might also suffer its consequences. Ultimately, he thinks his position will keep him safe. He is intelligent enough to understand the game, but not insightful enough to grasp the limits of his place within it. This blindness gives the novel a strong sense of irony.

The satirical approach gives Fernando room to criticise political hypocrisy without turning the novel into a direct political argument. By using fictional countries and exaggerated names, he creates some distance from specific governments and events while still making the larger targets of the book clear. The humour does not take away from the seriousness of the subject; instead, it makes the cruelty and self-interest beneath the political performance stand out more sharply.

Near the end, Fernando echoes Macbeth with the line, “There is judgment here.” It captures the question running through the novel: can anyone participate in corruption and remain untouched by it? Beneath this satire is a dark story about power and the danger of believing that someone else will always pay the price.

I came away feeling that Outpost of Empire is a valuable and thought-provoking book, particularly in today’s political and social climate. It has a distinctive voice, and the questions it raises about power, responsibility and foreign interference remain relevant far beyond the fictional borders of Lackadasia.
About the Author

Shavindra Fernando has worked as a reporter. He read English & Classics at the University of Peradeniya in Sri Lanka, and took International Relations & Ethnic Politics as a Reuter Fellow at the University of Oxford in England. The Vague Poetess (1999)was his first novel.

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