http://www.monbiot.com/archives/2008/06/10/small-is-bountiful/

Small Is Bountiful

Peasant farmers offer the best chance of feeding the world. So why do we treat them with contempt?

By George Monbiot. Published in the Guardian 10th June 2008

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There is an inverse relationship between the size of farms and the amount of crops they produce per hectare. The smaller they are, the greater the yield.

In some cases, the difference is enormous. A recent study of farming in Turkey, for example, found that farms of less than one hectare are twenty times as productive as farms of over ten hectares(3). (Amartya) Sen’s observation has been tested in India, Pakistan, Nepal, Malaysia, Thailand, Java, the Phillippines, Brazil, Colombia and Paraguay. It appears to hold almost everywhere.

The finding would be surprising in any industry, as we have come to associate efficiency with scale. In farming, it seems particularly odd, because small producers are less likely to own machinery, less likely to have capital or access to credit, and less likely to know about the latest techniques.

There’s a good deal of controversy about why this relationship exists. Some researchers argued that it was the result of a statistical artefact: fertile soils support higher populations than barren lands, so farm size could be a result of productivity, rather than the other way around. But further studies have shown that the inverse relationship holds across an area of fertile land. Moreover, it works even in countries like Brazil, where the biggest farmers have grabbed the best land(4).