Another ‘green revolution’ needed before 2050
THE UN Food and Agriculture Organisation (FAO) has thrown down what appears to be an impossible agricultural challenge to expand food output drastically on a planet with depreciating land and water resources.
In order to feed the extra 2.3 billion people expected to be on the planet by 2050, the FAO said last week the world will have to produce 70 per cent more food.
Annual cereal production will need to increase by nearly one billion tonnes to meet this mark, and meat production by more than 200 million tonnes.
About 90 per cent of the necessary increase will have to come from increased crop yields and cropping intensity, according to the FAO discussion paper, while extra arable land will have to be found - 120 million hectares of it in the developing world.
In Australia, director of CSIRO's Sustainability Agriculture Flagship, Dr Peter Carberry, says the world demand for food and fibre will eclipses climate change as the world's next great challenge.
The "21st...