Quotulatiousness

February 17, 2023

QotD: Risk mitigation in pre-modern farming communities

Let’s start with the first sort of risk mitigation: reducing the risk of failure. We can actually detect a lot of these strategies by looking for deviations in farming patterns from obvious efficiency. Modern farms are built for efficiency – they typically focus on a single major crop (whatever brings the best returns for the land and market situation) because focusing on a single crop lets you maximize the value of equipment and minimize other costs. They rely on other businesses to provide everything else. Such farms tend to be geographically concentrated – all the fields together – to minimize transit time.

Subsistence farmers generally do not do this. Remember, the goal is not to maximize profit, but to avoid family destruction through starvation. If you only farm one crop (the “best” one) and you get too little rain or too much, or the temperature is wrong – that crop fails and the family starves. But if you farm several different crops, that mitigates the risk of any particular crop failing due to climate conditions, or blight (for the Romans, the standard combination seems to have been a mix of wheat, barley and beans, often with grapes or olives besides; there might also be a small garden space. Orchards might double as grazing-space for a small herd of animals, like pigs). By switching up crops like this and farming a bit of everything, the family is less profitable (and less engaged with markets, more on that in a bit), but much safer because the climate conditions that cause one crop to fail may not impact the others. A good example is actually wheat and barley – wheat is more nutritious and more valuable, but barley is more resistant to bad weather and dry-spells; if the rains don’t come, the wheat might be devastated, but the barley should make it and the family survives. On the flip side, if it rains too much, well the barley is likely to be on high-ground (because it likes the drier ground up there anyway) and so survives; that’d make for a hard year for the family, but a survivable one.

Likewise – as that example implies – our small farmers want to spread out their plots. And indeed, when you look at land-use maps of villages of subsistence farmers, what you often find is that each household farms many small plots which are geographically distributed (this is somewhat less true of the Romans, by the by). Farming, especially in the Mediterranean (but more generally as well) is very much a matter of micro-climates, especially when it comes to rainfall and moisture conditions (something that is less true on the vast flat of the American Great Plains, by the by). It is frequently the case that this side of the hill is dry while that side of the hill gets plenty of rain in a year and so on. Consequently, spreading plots out so that each family has say, a little bit of the valley, a little bit of the flat ground, a little bit of the hilly area, and so on shields each family from catastrophe is one of those micro-climates should completely fail (say, the valley floods, or the rain doesn’t fall and the hills are too dry for anything to grow).

Bret Devereaux, “Collections: Bread, How Did They Make It? Part I: Farmers!”, A collection of Unmitigated Pedantry, 2020-07-24.

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