George Monbiot
Though the rich world’s governments won’t hear it, the issue of whether or not the world will be fed is partly a function of ownership. This reflects an unexpected discovery. It was first made in 1962 by the Nobel economist Amartya Sen, and has since been confirmed by dozens of further studies. 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. Sen’s observation has been tested in India, Pakistan, Nepal, Malaysia, Thailand, Java, the Philippines, 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 artifact: 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.
The most plausible explanation is that small farmers use more labour per hectare than big farmers. Their workforce largely consists of members of their own families, which means that labour costs are lower than on large farms (they don’t have to spend money recruiting or supervising workers), while the quality of the work is higher. With more labour, farmers can cultivate their land more intensively: they spend more time terracing and building irrigation systems; they sow again immediately after the harvest; they might grow several different crops in the same field.