• Pollution through pesticides
The use of pesticides has emerged as one of the essential agro – inputs to increase and sustain crop yields, but their effects are not goods . Scientific surveys and evidences indicate that particles , sprayed or used over crop leave un dissolved and harmful elements which are transferred to humans and other living bodies through grains , vegetables , fruits and grasses , causing a number of disease , ailments and harmful effects on our health. The indiscriminate use of chemicals pesticides concern the presence of pesticides residue in our foods . all these pesticides have a tendency to survive in plant in a long time . they enter the food chain and are found in meat and dairy products . according a study
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He had a vision of sustainable , ecologically stable , self contained and biologically balanced farming in defining the organic farming . the origin of name of organic lies in signifying the biological basis agriculture, the term organic is derived from organism , signifying the entire biota of earth .
Organic farming is synonymous for biological agriculture and recently known as ecological farming which can be define as system that attempt to provide a balanced environment, in which the enhancement of natural processes with the combination of moderate input of energy and resources.
In fact , the organic farming is a holistic production management system which promotes and enhances health of agro-ecosystem related to the biodiversity , nutrients bio cycle and soil biological and microbial activities.
Number of definition are coined to define organic farming. the most accepted definitions based on the holistic meaning of organic agriculture are
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to the maximum extent feasible organic farming system rely upon crop rotation ,crop residues ,animals manures , legumes green manures off farm organic wastes, mechanical cultivation , mineral bearing rocks and aspect of biological pest control to maintain soil productivity and tilth , to supply plant nutrients , and control weeds and others pests.
• Organic agriculture is the production system that sustain the health of soil , ecosystem and peoples , by relying on ecological process , biodiversity and natural cycles and adapted to local condition than the use of inputs with adverse effects.(IFOAM ,2008)
• "Organic agriculture is a holistic production management system which promotes and enhances agro-ecosystem health, including biodiversity, biological cycles, and soil biological activity. It emphasises the use of management practices in preference to the use of off-farm inputs, taking into account that regional conditions require locally adapted systems. This is accomplished by using, where possible, agronomic, biological, and mechanical methods, as opposed to using synthetic materials, to fulfil any specific function within the system." (FAO/WHO Codex Alimentarius Commission,