The contribution of biologists are over-stated. Chemists and chemical
engineers even do more, according to Norman Borlaug's speech.
The productivity of the farm land very much depends on the inventions of
farming technology: farm tools and machinery, seeds and breeding, irrigation
, fertilizers, and pest control. For example, the invention of ammonia
synthesis by Fritz Haber, Nobel Prize Winner (1918) and its innovation led
by Carl Borch, Nobel Prize Winner (1932) at BASF made possible the
availability of inexpensive synthetic fertilizers. Later, the key invention
of Norman Borlaug, Nobel Prize Winner (1970) was developing high-yield and
disease-resistant wheat, corn and rice. The Green Revolution is an outcome
of extensive use of four technologies: irrigation, mechanization,
fertilizers, and improved hybrid crop plants.