1. Principle of health
Organic agriculture must contribute to the health and well-being of soil, plants, animals, humans and the earth.
2. The principle of ecological balance
We must model organic farming on living ecological systems. Moreover, the methods of organic farming must fit the ecological balance and cycles in nature.
3. Principle of fairness
Organic farming provides good quality of life and helps in reducing soil infertility.
4. Principle of care
We should practice organic agriculture in a careful and responsible manner to benefit the present and future generations and the environment.

WHY IS CONVENTIONAL FARMING UNSUSTAINABLE
• Loss of soil fertility due to excessive use of chemical fertilizers and lack of crop rotation.
• Nitrates run-off during rains contaminates water resources.
• Use of poisonous biocide sprays to curb pest and weeds.
• Soil erosion due to deep ploughing and heavy rains.
• Loss of biodiversity due to Monoculture.

Source:
www.agrihomegh.com/organic-farming-types-principles/