Treating soil like dirt is a fatal mistake

War, pestilence, even climate change, are trifles by comparison. Destroy the soil and we all starve

March 27, 2015 01:00 am | Updated 01:01 am IST

Imagine a wonderful world in which there was no threat of climate breakdown, no loss of freshwater, no antibiotic resistance, no obesity crisis, no terrorism, no war. Surely, then, we would be out of major danger? Sorry. Even if everything else were miraculously fixed, we’re finished if we don’t address an issue considered so marginal and irrelevant that you can go for months without seeing it in a newspaper.

It’s literally, and metaphorically, beneath us. To judge by its absence from the media, most journalists consider it unworthy of consideration. But all human life depends on it. We knew this long ago, but somehow it has been forgotten. It is not that the issue has changed, but we have.

Landowners around the world are now engaged in an orgy of soil destruction so intense that, according to the UN’s Food and Agriculture Organisation, the world on average has just 60 more years of growing crops.

To keep up with global food demand, the UN estimates, 6m hectares (14.8m acres) of new farmland will be needed every year. Instead, 12m hectares a year are lost through soil degradation. We wreck it, then move on, trashing rainforests and other precious habitats as we go. Soil is an almost magical substance, a living system that transforms the materials it encounters, making them available to plants. Yet we treat it like, well, dirt.

The techniques that were supposed to feed the world threaten us with starvation. A paper just published in the journal Anthropocene analyses the undisturbed sediments in an 11th century French lake. It reveals that the intensification of farming over the past century has increased the rate of soil erosion sixtyfold. Another paper, by researchers in the U.K., shows that soil in allotments contains a third more organic carbon than agricultural soil and 25 per cent more nitrogen. This is one of the reasons why allotment holders produce between four and 11 times more food per hectare than farmers do.

Whenever I mention this issue, people ask: “But surely farmers have an interest in looking after their soil?” They do, and there are many excellent cultivators who seek to keep their soil on the land. There are also some terrible farmers, often absentees, who allow contractors to rip their fields to shreds for the sake of profit. Even the good ones are hampered by an economic and political system that could scarcely be better designed to frustrate them.

This is the International Year of Soils, but you wouldn’t know it. In January, the Westminster government published a new set of soil standards, wholly unmatched to the scale of the problem. There are no penalties for compromising our survival except a partial withholding of public subsidies. Yet even this pathetic guidance is considered intolerable by the National Farmers’ Union, which greeted them with complaints.

Few sights are as gruesome as the glee with which the NFU celebrated the death last year of the European soil framework directive, the only measure with the potential to arrest our soil-erosion crisis. Looking back on this episode, we will see it as a parable of our times.

Soon after that, the business minister, Matthew Hancock, announced that he was putting “business in charge of driving reform”: trade associations would be able “to review enforcement of regulation in their sectors.” The NFU was one the first two bodies granted this privilege. Mr. Hancock explained that this “is all part of our unambiguously pro-business agenda to increase the financial security of the British people.” But it doesn’t increase our security; it undermines it.

The government’s deregulation bill, which has now almost completed its passage through parliament, will force regulators to “have regard to the desirability of promoting economic growth.” But short-term growth at the expense of public protection compromises long-term survival. This “unambiguously pro-business agenda” is deregulating us to death.

Role of globalisation

Now, globalisation ensures that this disaster is reproduced everywhere. In its early stages, globalisation enhances resilience: people are no longer dependent on the vagaries of local production. But as it proceeds, it undermines resilience, as it threatens to bring down systems everywhere.

Short-term growth at the expense of public protection compromises long-term survival. What appear to be great crises are slight and evanescent when held up against the steady trickling away of our subsistence. The avoidance of this issue is perhaps the greatest social silence of all. Our insulation from the forces of nature has encouraged a belief in the dematerialisation of our lives, as if we no longer subsist on food and water, but on bits and bytes. This is a belief that can be entertained only by people who have never experienced serious hardship, and who are therefore unaware of the contingency of existence.

It’s not as if we are short of solutions. In many parts of the world, farmers have been experimenting with zero-tillage, often with extraordinary results.

Even better are some of the methods that fall under the heading of permaculture — working with complex natural systems rather than seeking to simplify or replace them. Pioneers such as Sepp Holzer and Geoff Lawton have achieved remarkable yields of fruit and vegetables in places that seemed unfarmable: 1,100m above sea level in the Austrian alps, for example. But, though every year the U.K. government spends £450m on agricultural research and development — much of it on techniques that wreck our soils — there is no mention of permaculture.

The macho commitment to destructive short-termism appears to resist all evidence and all logic. Never mind life on Earth; we’ll plough on regardless. — © Guardian Newspapers Limited, 2015

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