Ban on agrochemicals and fertilisers: Post-scenario analysis

By Prof. Rohan Rajapakse

(Emeritus Professor of Agriculture Biology UNIVERSITY OF RUHUNA and Former Executive Director Sri Lanka Council of Agriculture Research Policy)

There are two aspects of the ban on agrochemicals. The first is the ban on chemical fertilisers, and the second is the ban on the use of pesticides. Several eminent scientists, Dr Parakrama Waidyanatha (formerly the Soil Scientist of RRI), Prof OA Ileperuma (Former Professor of Chemistry University of Peradeniya), Prof C. S. Weeraratne (former Professor of Agronomy University of Ruhuna), Prof D. M. de Costa University of Peradeniya, Prof. Buddhi Marambe (Professor in Weed Science University of Peradeniya) have effectively dealt with the repercussion of the ban on chemical fertilisers which appeared in The Island newspaper on recently.

The major points summarised by these authors are listed below.

FERTILISER ISSUE

1. These scientists, including the author, are of the view that the President’s decision to totally shift to organic agriculture from conventional could lead to widespread hunger and starvation in future, which has become a reality. Organic farming is a small phenomenon in global agriculture, comprising a mere 1.5% of total farmlands, of which 66% are pasture.

2. Conventional farming (CF) is blamed for environmental pollution; however, in organic farming, heavy metal pollution and the release of carbon dioxide and methane, two greenhouse gases from farmyard manure, are serious pollution issues with organic farming that have been identified.

3. On the other hand, the greatest benefit of organic fertilisers as against chemical fertilisers is the improvement of soil’s physical, chemical and biological properties by the former, which is important for sustained crop productivity. The best option is to use appropriate combinations of organic and chemical fertilisers, which can also provide exacting nutrient demands of crops and still is the best option!

4. Sri Lanka has achieved self-sufficiency in rice due to the efforts of the Research Officers of the Department of Agriculture, and all these efforts will be in vain if we abruptly ban the import of fertiliser. These varieties are bred primarily on their fertiliser response. While compost has some positive effects such as improving soil texture and providing some micronutrients, it cannot be used as a substitute for fertiliser needed by high yielding varieties of rice. Applying organic fertilisers alone will not help replenish the nutrients absorbed by a crop. Organic fertilisers have relatively small amounts of the nutrients that plants need. For example, compost has only 2% nitrogen (N), whereas urea has 46% N. Banning the import of inorganic fertilisers will be disastrous, as not applying adequate amounts of nutrients will cause yields to drop, making it essential to increase food imports. Sri Lankan farmers at present are at the mercy of five organizations, namely the Central Department of Agriculture, the Provincial Ministry of Agriculture, the Private sector Pesticide Companies, the Non-Government organizations and the leading farmers who are advising them. Instead, improved agricultural extension services to promote alternative non-chemical methods of pest control and especially the use of Integrated Pest Management.

Locally, pest control depends mostly on the use of synthetic pesticides; ready to use products that can be easily procured from local vendors are applied when and where required Abuse and misapplication of pesticides is a common phenomenon in Sri Lanka. Even though many farmers are aware of the detrimental aspects of pesticides they often use them due to economic gains

We will look at the post scenario of
what has happened

1. The importation of Chemical fertilisers and Pesticides was banned at the beginning of Maha season 1 on the advice of several organic manure (OM) promoters by the Ministry of agriculture.

2. The Ministry of Agriculture encouraged the farmers to use organic manure, and an island-wide programme of producing Organic manure were initiated. IT took some time for the government to realize that Sri Lanka does not have the capacity to produce such a massive amount of OM, running into 10 tons per hectare for 500000 hectares ear marked in ma ha season.

3. Hence the government approved the importation of OM from abroad, and a Company in China was given an initial contract to produce OM produced from Seaweed. However, the scientists from University of Peradeniya detected harmful microorganisms in this initial consignment, and the ship was forced to leave Sri Lankan waters at a cost of US dollar 6.7 million without unloading its poisonous cargo. No substitute fertiliser consignment was available.

4. A committee in the Ministry hastily recommended to import NANO RAJA an artificial compound from India to increase the yield by spraying on to leaves. Sri Lanka lost Rs 863 million as farmers threw all these Nano Raja bottles and can as it attracts dogs and wild boar.

Since there is no other option the Ministry promised to pay Rs 50000 per hectare for all the farmers who lost their livelihood. It is not known how much the country lost due to this illogical decision of banning fertilisers and pesticides.

Recommendations

1. Judicious use of pesticides is recommended.

2. The promotion and the use of integrated pest management techniques whenever possible

3. To minimize the usage of pesticides:

Pesticide traders would be permitted to sell pesticides only through specially trained Technical Assistants.

Issuing pesticides to the farmers for which they have to produce some kind of a written recommendation by a local authority.

Introduction of new mechanism to dispose or recycle empty pesticide and weedicide bottles in collaboration with the Environment Ministry.

Laboratory-testing of imported pesticides by the Registrar of Pesticides at the entry-point to ensure that banned chemicals were not brought into the country.

Implementation of trained core of people who can apply pesticides.

Education campaigns to train farmers, retailers, distributors, and public with the adverse effects of pesticides.

Maximum Residue Level (MRL) to reduce the consumer’s risk of exposure to unsafe levels.

Integrated pest Management and organic agriculture to be promoted.

1. To ensure the proper usage of agrochemicals by farmers

All those who advised the Minister of Agriculture and the President to shift to OM still wield authority in national food production effort. The genuine scientists who predicted the outcome are still harassed sacked from positions they held in MA and were labelled as private sector goons. The danger lies if the farmers decide not to cultivate in this Maha season due to non-availability of fertilisers and pesticides the result will be an imminent famine.

The country also should have a professional body like the Planning Commission of

India, with high calibre professionals in the Universities and the Departments and

There should be institutions and experts to advise the government on national policy matters.