Traditional farming can only yield a limited biomass, as food for humans and animals. Better management practices and increase in acreage can increase yield, but only to a limited extent.
Plant breeding as a technology has helped increase yields to a very large extent. Who in India has not heard of Green Revolution which was responsible for our country to not merely meet the national requirements in food production but also helped us even to export it?
Green revolution was dependent to a large extent on plant breeding techniques for development of high-yielding and disease resistant varieties in wheat, rice, maize, etc.