Various methods used to obtain the maximum yield of food grains from minimum land, which saved a large population from hunger, are together called the:

1. The aim described is maximum food-grain yield from minimum land. 2. This effort, using dwarf wheat and rice varieties and better management, is the green revolution. 3. The white revolution is for milk, the blue revolution for aquatic produce and the industrial revolution for manufacturing, so they do not match. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 8 "Cell Biology and Biotechnology", p.105_