The document discusses the evaluation and spread of the System of Rice Intensification (SRI) in Asia. It describes how SRI was developed in Madagascar in the 1980s and then spread to many other countries in Asia and other regions through trials conducted by various organizations starting in the late 1990s and 2000s. It provides details on SRI trials, evaluations and adoption in numerous countries in Asia, including China, Indonesia, Bangladesh, Cambodia, the Philippines, Sri Lanka, Nepal, Myanmar, Laos, Thailand and Vietnam. On average, SRI is shown to increase rice yields by 78% while reducing inputs such as water, fertilizer and costs of production.