Why Is Gardening So Important Now?
There are at least five reasons why more of us should take up spade, rake and hoe, make compost and raise good soil and garden beds with a vengeance, starting this spring and with an eye toward forever.
1) Peak oil. Most petroleum experts agree that we shot past peak oil in the U.S. around 1971. Lest you’ve missed the raging, that’s the point at which more than half the readily, affordably retrievable oil in reserves has been used up, what remains is more expensive to retrieve, and the dregs are irretrievable. We’ve shot or are about to shoot past peak worldwide, estimates of when ranging from 2007 to 2013, with many oil company execs agreeing to at least the latter. There are no new cheap-easy oil fields coming on line. Any new fields you hear about or new methods, like tar sands drilling are expensive, water guzzling, dangerous, environmentally disastrous and unlikely to produce more than a few years worth of oil, and that a decade or more down the line. That means abundant, cheap oil is about to be history. What difference does that make?
For one thing, there is no replacement for oil that can do all that oil has done as cheaply and universally as oil has done it. I offer an exercise in Life Rules, “The ABC’s of Peak Oil” which helps readers imaginatively subtract from their lives everything that depends in one way or another on cheap easy oil. It doesn’t leave much. (See Beth Terry’s Web site, for example, for what subtracting plastics may entail.)
The global economy that presently supplies us with our food, runs on cheap oil and lots of it. It runs slower and less predictably on expensive oil that’s hard to get because it’s located in hard-to-reach or high-risk conflict-ridden zones. Cheap, abundant food on the shelves of grocery and big box stores and food banks, on our tables and in our bellies depends on cheap abundant oil for fertilizers, pesticides, and herbicides, and to power farm machinery and transport food from fields to processors and packagers and then to purveyors and consumers, around the world. Past peak, that system’s going to have the half-life of the strontium 90 that’s escaping the Fukushimi Dai-ichi reactor: 29 years, or thereabouts. One good global crisis, and not that long.
2) Peak soil & space. A couple of links between peak oil and peak soil: First, it matters that one of the proposed alternatives to oil is biofuels. Acreage around the world is being converted from production of corn, wheat and soy for human and animal consumption — i.e. food — to production of ethanol and biofuels to put in trucks and cars and … which makes remaining corn, et al., more expensive. Some energy economy geniuses are proposing that Afghans, for example, convert the fields of opium poppies that are their primary agricultural export, not to growing grains or legumes or other staple foods, but to biofuel, which would, not coincidentally, make the gasoline that goes in American military equipment much cheaper and provide Afghans with a profitable market item rather than food.
According to a 2009 National Geographic staff report, “The corn used to make a 25-gallon tank of ethanol would feed one person for a year.” Tell that to Archer-Daniels-Midland, Al Gore’s deep-pockets friend and mega-ethanol and corn products producer. Second, the huge oil-gluttonous machinery that has made factory farming possible has compacted soils, literally crushing the life out of them.
Arable land in the developing or so-called Third World has been at a premium since time immemorial, thanks to geographic location and/or persistent plundering by empires old and new. Revolutions in North Africa and the Middle East are occurring not just to obtain more democratic governments but also to obtain more food and more affordable food. Revolutionaries are barking up a tree that’s seen better days.
In the United States and elsewhere in the developed, read “First” world, arable land has reached peak production. All those petroleum-based products that fueled the Green Revolution of the last century, also produce so many crops, constantly, with support from toxic chemicals and without concern for the microbes that make soil a live, self-regenerating system, that most American farmland — if its farmers didn’t go organic a while back — is comprised of dead soils. Peak oil makes a repeat of the petroleum-driven 20th century Green Revolution impossible, which is good for soil and other living things, not so much for food prices and supplies.
After peak, in soil like in oil, comes descent. Adding insult to injury, every year farmers lose thousands of acres of arable land to urban and suburban sprawl and more tons of topsoil than they produce of grain and other field crops to attrition. Half the Earth’s original trove of topsoil, like that which once permitted the American Midwest to feed the world, has been lost to wind and erosion. Millions of years in the making, it has been depleted and degraded by industrialized agriculture in only a couple of centuries. China’s soils ride easterly winds across the Pacific to settle out on cars and rooftops in California while the American Bread Basket’s soils are building deltas and dead zones at the mouth of the Mississippi. Like oil, that soil isn’t coming back. We can only build it, help it to build itself and wait.
