During the Green Revolution both the yield and the global production
significantly increased. The yield increase was achieved, for some main crops, thanks
to the so called high yielding varieties. Higher global production was also due to the
increase of the crop production surface which took place especially in some areas of
the planet. In the current scenario of rapid human population increase, with a sharp
increase of livestock, the challenge is to achieve efficient, productive, sustainable and
resilient land use, while conserving biodiversity and assuring, everywhere, food
security inside a framework of sustainable diets. The paper, after a discussion on the
meanings of such concepts as yield, yield gap, production and global production
describes some of the main issues related to increased intensification of food security
and global productivity in the current discussions on the potential of the Green
Revolution approach and the agro-ecological paradigm.
Keywords: Agro-food system, Diet gap, Food security, Global production,
Sustainability, Yield, Yield gap.
