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AS the world grapples with increased demand for food, national governments are engaging various strategies to create sustainable agricultural bases that can boost the national economy as well as ensure food security at national and household levels.
Strategies being employed include extensive agriculture, which calls for bringing more land under cultivation and intensive agriculture, which demands maximum exploitation of land use in order to increase production.
To fully exploit agriculture land, science and technology has continued to be relied upon and this has come with its own negative effects.
In order to effectively run farm machinery especially on a commercial basis, fossil fuels are burnt which release carbon into the atmosphere and also contaminate the land surface.
Increased demand for food has also enhanced the use of fertiliser and genetically modified seed with the sole aim of maximising production potential. Fertiliser degrades the soil quality and also disturb the soil structure, leading to the release of carbon, which affects the ozone layer and therefore, climate change.
These and many other phenomena have given birth to the debate as to which farming methods should be promoted in order not to contribute to climate change.
A number of institutions have committed themselves to adopting new farming methods that are believed to offer the answer to issues related to climate change. Among the methods proposed is the engagement into organic farming as it uses natural means and also promotes absorption of carbon from the atmosphere.
The Organic Producers and Processors Association of Zambia (OPPAZ) is one such institution that holds the view that organic agriculture is the answer to climate change woes that have continued to affect the globe.
The institution believes that Zambia needs to reposition herself in order to contribute significantly to the call for employment of efforts aimed at reversing the effects of climate change.
Chief executive officer, Munshimbwe Chitalu, says conventional agriculture needs to be integrated with good agricultural practices in order to reduce the effects of climate change, which are attributable to the amount of green house gases in the atmosphere.
Mr Chitalu believes overuse of chemical fertiliser is not good because other than distorting the soil structure, nitrogen based fertiliser also pollute the under ground water table which in turn degrade the environment.
“An integrated agriculture system is important. There is need to change the position from promoting the use of chemical fertilisers, especially the nitrogen-based fertiliser because these distort the soil structure and also contaminate the water table. The fertiliser also kills beneficial pests such as bees which are important in the reproduction life cycle of plants and also control other pests,” he said.
In its effort to enhance the fight against climate change, OPPAZ encourages its members to engage in organic farming. Among the members are parliamentarians who are important in making policy decisions while its patron, first Republican president Dr Kenneth Kaunda, is a proponent of consumption of organic foods.
OPPAZ contends that organic farming promotes the maintenance of forests and intercropping through the use of conservational farming, while conventional farming promotes the clearance of wood lots and the engineering of seed so that it can produce to its maximum potential.
The primary objective of conventional agriculture is to increase food production in order to be self-sustaining and to be able to supply the market regardless of the impact it has on the environment.
‘Organic farming offers the ready solution to reversing the effects of climate change as it promotes the growth of trees on their own and this plays a very big role in balancing nature. The eco-system is very important because it controls nature and also provides life to other animal species. But the use of unsustainable methods such as fertiliser application has contributed to the destruction of the soil structure,’
“The addition of fertiliser also affects the living organisms in the soil that are responsible for nitrogen fixation and the chemical elements added to the soil also affect the proliferation of soil microbes is disturbed,” Mr Chitalu says.
According to the Food and Agriculture Organisation (FAO) a total number of people is in need of food to 1.02 billion across the world.
With the world food prices stubbornly staying high, the food crisis continues to dog the minds of the world political leadership and the use of conventional agriculture continues to offer the easier way out. But what are the implications of relying on this kind of agriculture in the long run?
The resulting effect is that the more food is produced using conventional agriculture, the more the effect of climate change and in the long run the quality of life will be affected negatively.
According to The Institute of Science in Society, the FAO has come out in favour of organic agriculture.
Its report Organic Agriculture and Food Security explicitly states that organic agriculture can address local and global food security challenges.
FAO believes that organic farming is no longer supposed to be considered a niche market within developed countries, but a vibrant commercial agricultural system, which should be embraced by all nations.
Currently it is practised in 120 countries and covers 31 million hectares of cultivated land plus 62 million ha of certified wild harvested areas.
“The organic market was worth US$40 billion in 2006, and expected to reach US$70 billion by 2012” the report says.
The FAO Report strongly suggests that a worldwide shift to organic agriculture can fight world hunger and at the same time tackle climate change. It believes that conventional agriculture, together with deforestation and rangeland burning is responsible for 30 per cent of the carbon dioxide and 90 per cent of nitrous oxide emissions worldwide.
“Organic agriculture offers an alternative food system that improves agricultural performance to better provide access to food, nutritional adequacy, environmental quality, economic efficiency, and social equity. This is crucial if agricultural production in developing countries is to rise by 56 per cent by 2030 to meet nutritional needs,” the Report states.
In Africa, conservation farming has shown great potential in controlling soil erosion and increasing food production and also reduces labour intensity which is associated with the agriculture sector in developing countries. The labour intensity is as a result of the low levels of engagement into mechanised farming.
In Zambia small-scale farmers have found that conservation agriculture works well in increasing household food security and currently more than 100,000 small-scale farmers in Zambia have converted to conservation agriculture.
The Principle upon which conservation farming is practiced is based on the conservation of the natural environment while ensuring maximum utilisation of soil nutrients.
This ultimately leads to maintenance of the soil structure which limits the emission of carbon into the atmosphere.
According to the infonet-biovision website, small-scale farmers have found that conservation agriculture works better than conventional farming as it uses less fertiliser and allows for the intercropping with nutrient providing trees.
Silas Mutambo is a small scale farmer of rural Chongwe and he has been practicing conservation farming for the last four years and the benefits are beyond his expectations.
He has been able to send his children to school and is now a proud owner of four herds of cattle which he bought from the benefits of conservation farming.
“I always advise fellow farmers to opt for conservation farming because it has more benefits to me as a farmer as well as my environment. My soil is rich because I use animal manure instead of chemical fertiliser, I also grow tree which I intercrop with my maize so the rate of soil erosion is very minimal.”
Climate change has the potential of reversing so many years of development and it continues to threaten the same food security that conventional agriculture aims to promote.
Its characteristics include prolonged drought spells, heavy stormy rains, melting of the glacier which will ultimately lead to high water levels in the seas, changes in the migration patterns of wild animals and many other effects.
All these effects have a potential of affecting food production and therefore the adoption of farming methods that can help reverse the effect of climate change should be embraced.
Unless organic farming is embraced at world level, agriculture in its current form still remains to be accused of perpetrating climate change.
It remains for all to see if reduced use of fertiliser and other sought after elements of conventional farming can really be replaced with organic farming and the same desired benefits of providing food for all can achieved with the adoption of new farming methods.
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