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Wednesday, August 8, 2007

What is organic farming?

Organic farming can be defined as an approach to agriculture where the aim is to create integrated, humane, environmentally and economically sustainable agricultural production systems. Maximum reliance is placed on locally or farm-derived renewable resources and the management of self-regulating ecological and biological processes and interactions in order to provide acceptable levels of crop, livestock and human nutrition, protection from pests and diseases, and an appropriate return to the human and other resources employed. Reliance on external inputs, whether chemical or organic, is reduced as far as possible. In many European countries, organic agriculture is known as ecological agriculture, reflecting this reliance on ecosystem management rather than external inputs.

The objective of sustainability lies at the heart of organic farming and is one of the major factors determining the acceptability or otherwise of specific production practices. The term 'sustainable' is used in its widest sense, to encompass not just conservation of non-renewable resources (soil, energy, minerals) but also issues of environmental, economic and social sustainability. The term 'organic' is best thought of as referring to the concept of the farm as an organism, in which all the component parts - the soil minerals, organic matter, micro-organisms, insects, plants, animals and humans - interact to create a coherent and stable whole.

The key characteristics of organic farming include:

http://www.wirs.aber.ac.uk/research/organics/image3.gif protecting the long term fertility of soils by maintaining organic matter levels, encouraging soil biological activity, and careful mechanical intervention;

http://www.wirs.aber.ac.uk/research/organics/image3.gif providing crop nutrients indirectly using relatively insoluble nutrient sources which are made available to the plant by the action of soil micro-organisms;

http://www.wirs.aber.ac.uk/research/organics/image3.gif nitrogen self-sufficiency through the use of legumes and biological nitrogen fixation, as well as effective recycling of organic materials including crop residues and livestock manures;

http://www.wirs.aber.ac.uk/research/organics/image3.gif weed, disease and pest control relying primarily on crop rotations, natural predators, diversity, organic manuring, resistant varieties and limited (preferably minimal) thermal, biological and chemical intervention;

http://www.wirs.aber.ac.uk/research/organics/image3.gif the extensive management of livestock, paying full regard to their evolutionary adaptations, behavioural needs and animal welfare issues with respect to nutrition, housing, health, breeding and rearing;

http://www.wirs.aber.ac.uk/research/organics/image3.gif careful attention to the impact of the farming system on the wider environment and the conservation of wildlife and natural habitats.

wirs.aber.ac.uk

Genetically modified food

Kenyans examining insect-resistant transgenic Bt corn.

From Wikipedia

Genetically Modified (GM) foods are produced from genetically modified organisms (GMO) which have had their genome altered through genetic engineering techniques. The general principle of producing a GMO is to insert DNA that has been taken from another organism and modified in the laboratory into an organism's genome to produce both new and useful traits or phenotypes. Typically this is done using DNA from certain types of bacteria. GM Foods have been available since the 1990s, with the principal ones being derived from plants; soybean, corn, canola and cotton seed oil.[1]

Controversies surrounding GM foods and crops commonly focus on human and environmental safety, labelling and consumer choice, intellectual property rights, ethics, food security, poverty reduction, and environmental conservation. See also: GM food controversy.

Organic food

From Wikipedia


An organically-grown apple. Fruits and vegetables grown organically are similar to conventionally grown produce. In most jurisdictions, organic food must meet specified production standards, which specify growing and processing conditions different from normal agricultural and food safety requirements.

Organic foods are produced according to certain production standards. For crops, it means they were grown without the use of conventional pesticides, artificial fertilizers, human waste, or sewage sludge, and that they were processed without ionizing radiation or food additives For animals, it means they were reared without the routine use of antibiotics and without the use of growth hormones. In most countries, organic produce must not be genetically modified.
Increasingly, organic food production is legally regulated. Currently, the United States, the European Union, Japan and many other countries require producers to obtain organic certification in order to market food as organic.
Historically, organic farms have been relatively small family-run farms which is why organic food was once only available in small stores or farmers' markets. Now, organic foods are becoming much more widely available — organic food sales within the United States have grown by 17 to 20 percent a year for the past few years while sales of conventional food have grown at only about 2 to 3 percent a year. This large growth is predicted to continue, and many companies are jumping into the market.