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Fertiliser testing and MONLAR’s claim

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According to a news report (Island, 2-11-20), Mr. Chinthaka Rajapakshe, who is said to be the moderator of an organization known as the “Movement for Land and Agricultural Reform (MONLAR)” claims “a high probability that the fertilizer currently released to the market were of low quality and high in heavy metals, as the National Fertiliser Secretariat had stopped testing samples at local labs”.

It seems that these labs are currently non-functional because of the Covid crisis, and so foreign labs are used. Testing has not stopped. The non-analysis and lack of testing of compost fertilizers are ignored by MONLAR as they are tacitly supported by MONLAR! Here I will show that even if one of the world’s worst rock phosphates, e.g, Nauru phosphate from New Zealand, containing very high amounts of heavy metals (occurring naturally) were imported, it will still have NO TOXIC effect if applied to Sri Lankan soils for agricultural purposes. This is based on the research I have published in peer-reviewed journals. For instance, Mr. Rajapaksa should consult my publication in Environmental Geophysics and Health, August 2018 https://doi.org/10.1007/s10653-018-0140-x where a detailed discussion is found. Here we will explain all this more simply in the following.

However, first we must look at the political agenda of MONLAR itself. Although I am not aware of the current political strategy of MONLAR in detail, I personally knew some of the initial founders of this movement. They were Marxist militants who decided to launch a movement to capture and control the peasant farmers and convert them into a “revolutionary political force”. A key tactic was to rouse the farmers into opposing “big capitalist agricultural multi-nationals” and their genetically modified (GM) products and seeds. Imported fertilizers sold by “capitalist multi-nationals” were also targeted. The opposition to GM products and high-yielding hybrid seeds led them to back “traditional seed varieties”. These yield about a fifth of the harvest from modern hybrid seeds created by the rice scientists at Bathalagoda and other research Institutes. They were the real unsung heroes who have kept the exponentially increased population of the nation away from famine since World War II. A return to traditional seeds will mean a return to shortages, famines, and re-importing “milchaard haal”.

But MONLAR and other backers of “traditional seeds” and compost fertilizers etc., are either mesmerized by false claims and fake science, or are cynically using them to further their political agendas. They want to negate the good work our scientists. Even the Minister Pathirana seems to have been tragically mislead into presenting a motion for “traditional seeds” in place of hybrids (Island, 02-11-20). The motion states that “this Parliament resolves …(to).. educate the public on the nutritious value of the traditional, local rice varieties available in the Sri Lankan market at present, of the new rice varieties consumed at present, and of the varieties of rice that should be consumed by people with various diseases, and also to provide facilities for farmers to cultivate those varieties of paddy.” So the minister wants to cure diseases with rice, while 30% of kids come hungry to school! Unfortunately, it is the minister who has to be educated. This may be a case where the minster’s scientific and medical advisors dare not contradict the minster and put him right!

The opposition to imported fertilizer led these groups to support the use of compost whose composition and quality are never subject to analysis. But MONLAR rushes to claim that imported triple phosphate is full of heavy-metal toxins profiting from a lapse in local testing due to an epidemic! This cry had already found resonance with the “Natha Deviyo” group led by Ms. Senanayake of “Hela-suvaya” together with Dr. Nalin de Silva, then at the Kelaniya Science faculty, and Ven. Rathana, then an MP from the JHU. They claimed that many illnesses, e.g., Kidney diseases in the Rajarata, are caused by arsenic and other toxins in imported fertilizers and herbicides, even though these claims were, and are now found to be completely contrary to exhaustive investigations by several independent research groups. For instance, strong evidence now suggest that the Rajarata Kidney disease is contracted by people who drink water from wells containing excessive amounts of fluoride and hard water, both of geological origin (See: Imbulana et al., Science of the Total Environment, 2020, https://doi.org/10.1016/j.scitotenv.2020.140716 and references therein ); in contrast, those who drink water from agricultural canals, rivers and tanks carrying fertilizer runoff are free of the disease!

Why do I say that even if one of the cheapest and “worst available” mineral phosphates, e.g., Nauru phosphate were used in agriculture, it will have no effect on our health? Let us consider this in detail.

Cadmium (Cd), arsenic (As) and lead (Pb) are some of the dangerous metal toxins found in minerals.

We will take the example of Cd, as the discussion for other toxins follows the same lines. Nauru rock phosphate contains some 90 mg of cadmium per kg of phosphate, where as a more expensive phosphate fertilizer may contain less than 20 mg of cadmium per kg of fertilizer. European “green” activists who are much like their counterparts in Sri Lanka have clamored for lowered amounts of cadmium (and other such toxins) in fertilizers imported to Europe.

Let us consider that we imported the Nauru phosphate that has been used in New Zealand, and containing some 90 mg of Cd per kilo of rock phosphate. A farmer usually applies some 30 to 60 kg of phosphate fertilizer per hectare of land in planting rice, depending on the soil. The fertilizer is ploughed into about a depth of about 8-12 inches (20-30 cm). Taking a figure of 30 cm depth in a hectare of land, the 60 kg of fertilizer containing 60 x 90 mg (i.e., 0.54 g) of cadmium are dispersed in a soil volume of 3000 cubic meters, or about 3900 metric tonnes of soil of density 1.3 g/litre. So, 0.54 g of cadmium are dispersed in this volume of soil, increasing the soil cadmium concentration by a mere 1.38 micrograms/kg, i.e., 1.38 parts per quadrillion. This is an utterly minuscule amount as the ambient level of cadmium in the soil may be as high as 0.4 mg/kg even in virgin forest soil (Chandrajith and Dissanayake 2012), and this is similar to values known for European soils. NO LEACHING what ever was assume even in estimating the 1.38 parts per quadrillion, and of course this is not true. The monsoonal rains can wash off many many times more than the 1.38 part per quadrillion.

So, when MONLAR claims that substandard fertilizer probably containing dangerous levels of toxins is being imported to Sri Lanka and that no chemical analysis is done, this is just fear-mongering and nothing else. The calculation that I presented needs only a knowledge of simple arithmetic and MONLAR, claiming expertise in agriculture should be able to do this before raising alarms.

This does not mean that EXCESS USE of fertilizer does not pollute the environment. The excess phosphate fertilizer gets washed off into the aquatic ecosystem via rivers and canals and create Algal blooms and weed growth. They de-oxygenate the water and asphyxiate aquatic organisms. The seasonal increase in phosphate levels in the Rajarata tanks is given in Table 1 of a research publication that I authored with other collaborators in Environmental Geochemistry and Health: Volume 37, Issue 2 (2015). This applies to macroscopic components like phosphates contained in the fertilizer, but NOT to the microscopic components (trace amounts) like Cd, As, and Pb. The metal toxins largely come into the environment from other sources (e.g., mining, burning of fossil fuels, acid rain, burning garbage, smoking cigarettes etc) as discussed in relevant publications.

 

Chandre Dharmawardana,

National Research Council of Canada.

 

 



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Opinion

Aviation and doctors on Strike

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Crash in Sioux city. Image courtesy Bureau of Aircraft Accident Archies.

On July 19, 1989, United Airlines Flight 232 departed Denver, Colorado for Chicago, Illinois. The forecast weather was fine. Unfortunately, engine no. 2 – the middle engine in the tail of the three-engined McDonnell Douglas DC 10 – suffered an explosive failure of the fan disk, resulting in all three hydraulic system lines to the aircraft’s control surfaces being severed. This rendered the DC-10 uncontrollable except by the highly unorthodox use of differential thrust on the remaining two serviceable engines mounted on the wings.

Consequently, the aircraft was forced to divert to Sioux City, Iowa to attempt an emergency crash landing. But the crew lost control at the last moment and the airplane crashed. Out of a total of 296 passengers and crew, 185 survived.

The National Transportation Safety Board (NTSB) declared after an investigation that besides the skill of the operating crew, one significant factor in the survival rate was that hospitals in proximity to the airport were experiencing a change of shifts and therefore able to co-opt the outgoing and incoming shift workers to take over the additional workload of attending to crash victims.

One wonders what would have happened if an overflying aircraft diverted to MRIA-Mattala, BIA-Colombo, Colombo International Airport Ratmalana (CIAR) or Palaly Airport, KKS during the doctors’ strike in the 24 hours starting March 12, 2025? Would the authorities have been able to cope? International airlines (over a hundred a day) are paying in dollars to overfly and file Sri Lankan airports as en route alternates (diversion airports).

Doctors in hospitals in the vicinity of the above-named international airports cannot be allowed to go on strike, and their services deemed essential. Even scheduled flights to those airports could be involved in an accident, with injured passengers at risk of not receiving prompt medical attention.

The civil aviation regulator in this country seems to be sitting fat, dumb, and happy, as we say in aviation.

Guwan Seeya

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Opinion

HW Cave saw Nanu Oya – Nuwara rail track as “exquisite”

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Plans to resurrect the Nanu Oya – Nuwara Eliya rail track are welcome. The magnificent views from the train have been described by H W Cave in his book The Ceylon Government Railway (1910):

‘The pass by which Nuwara Eliya is reached is one of the most exquisite things in Ceylon. In traversing its length, the line makes a further ascent of one thousand feet in six miles. The curves and windings necessary to accomplish this are the most intricate on the whole railway and frequently have a radius of only eighty feet. On the right side of the deep mountain gorge we ascend amongst the tea bushes of the Edinburgh estate, and at length emerge upon a road, which the line shares with the cart traffic for about a mile. In the depths of the defile flows the Nanuoya river, foaming amongst huge boulders of rock that have descended from the sides of the mountains, and bordered by tree ferns, innumerable and brilliant trees of the primeval forest which clothe the face of the heights. In this land of no seasons their stages of growth are denoted by the varying tints of scarlet, gold, crimson, sallow green, and most strikingly of all, a rich claret colour, the chief glory of the Keena tree’.

However, as in colonial times, the railway should be available for both tourists and locals so that splendid vista can be enjoyed by all.

Dr R P Fernando
Epsom,
UK

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Opinion

LG polls, what a waste of money!

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If the people of this country were asked whether they want elections to the local government, majority of them would say no! How many years have elapsed since the local councils became defunct? And did not the country function without these councils that were labelled as ‘white elephants’?

If the present government’s wish is to do the will of the people, they should reconsider having local government elections. This way the government will not only save a considerable amount of money on holding elections, but also save even a greater amount by not having to maintain these local councils, which have become a bane on the country’s economy.

One would hope that the country will be able to get rid of these local councils and revert back to the days of having competent Government Agents and a team of dedicated government officials been tasked with the responsibility of attending to the needs of the people in those areas.

M. Joseph A. Nihal Perera

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