Organic farming is a production system that sustains the health of soils, ecosystems, and people. It relies on ecological processes and demand for organic farming, shows substantial growth in worldwide. It mainly relies on the minimal use of o-farm inputs and techniques such as crop rotation, green manure, composting, and biological pest control methods. Organic farming exerts no pressure on the environment compared to conventional, with possible exceptions of nitrate leaching, soil erosion, and in biodiversity. It is comparatively more energy ecient and always a sustainable approach. Ancient Sri Lanka which was world famous for paddy production at that time was called the ‘Granary
of Eastern Asia’, had introduced more than 200 kinds of indigenous paddy to the world. The vast irrigation systems including tanks (reservoirs) and canals connected to each other built in about 300BC illustrate the grandeur of our past, proving how our organic farming practices had been in Sri Lanka from ancient times.