Organic farming has been growing more and popular among the public. In general, we define organic farming as a kind of growing method without using chemical pesticides and fertilizers. The spirit of organic farming is to achieve a balance of economy, society and environment by encouraging biodiversity and soil living thing's activities, minimizing external output, so farmers can have sufficient income, consumers can enjoy healthy and premium vegetables and conserve the environment.
Food and Agriculture Organiziation of the United Nations FAO) and World Health Organization (WHO) set a International Food Standards - CODEX in 1999 that set a Guidelines for the Production, Processing, Labelling and Marketing of Organically Produced Foods:
"Organic agriculture is a holistic production management system which promotes and enhances agroecosystem health, including biodiversity, biological cycles, and soil biological activity. It emphasizes 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, cultural, biological and mechanical methods, as opposed to using synthetic materials, to fulfil any specific function within the system."
IFOAM - Organic International further increases our understanding about Organic Agriculture which is based on the principles of health, ecology, fairness and care. It is a holistic and comprehensive system resulting a sustainable ecological system, safe and nutritious food, animal welfare and social justice. Thus Organic Agricluture is not an exclusive system of repelling certain inputs.
Organic farming focuses on expereince and skills, producers should have good knowledge about sowing time, choices of seeds, crop rotation and biological and physical prevention of diseases and pests to grow healthy and strong vegetables. Thus organic farming is an inter-discipline knowledge including agriculture, biology and environmental science..etc.