Role of Agriculture in Global Warming
Peak Food author John Gossop this week had this article printed on pages 28 and 29 of the Farmers Weekly under the topic of the week section. Dated 8th January 2010, the article was entitled ‘Agriculture has a key role in taking heat out of global warming debate’. The issues raised were then then debated on the Farmers Weekly Forum.
The need to reduce greenhouse gas emissions and at the same time slow the depletion of finite oil and gas reserves has massive implications for the future of farming, which has become nothing more than a system of converting cheap, plentiful calories into a much smaller amount of expensive food calories. As oil and gas supplies are finite, and their production is expected to peak soon and then decline, our present farming system must be regarded as temporary.
As the world moves to collecting and using more of the abundant solar energy that reaches us every day, the most important method will be to use plants to collect solar energy to synthesise simple carbohydrates from carbon dioxide and water – in other words agriculture. But to feed the nine billion people predicted by 2050 with fewer fossil inputs, we will need to grow more of our input energy, fix more of our nitrogen and recycle more nutrients. It will be a massive challenge, but agriculture will surely become the most important industry in the world.