The Full Form of SRI is‍ System of Rice Intensification.

The System of Rice Intensification is a farming methodology aimed at increasing the yield of rice produced in farming. It is a low-water, labor-intensive method that uses younger seedlings singly spaced and typically hand weeded with special tools. It was developed in 1983 by the French Jesuit Father Henri de Laulanié in Madagascar. The system was not fully tested and spread throughout the rice growing regions of the world until some years later, with the help of Cornell University and others.