The Oil Drum: Australia/New Zealand

This month's edition of National Geographic has a feature article on "Soil", which looks at the steady degradation of agricultural land and the problem this poses in world where the population is heading for 9+ billion people - effectively calling attention to the "peak dirt" problem (however soil is renewable, so any "peak" should be able to be reversed if sufficient time and effort is put into doing so).

The article uses an acronym I've never come across before to describe the problem faced by those trying to draw attention to the issue: MEGO (My Eyes Glaze Over) - a phenomenon which should be familiar to anyone who has ever talked about peak oil, global warming or any of the other "limits to growth".

This year food shortages, caused in part by the diminishing quantity and quality of the world's soil, have led to riots in Asia, Africa, and Latin America. By 2030, when today's toddlers have toddlers of their own, 8.3 billion people will walk the Earth; to feed them, the UN Food and Agriculture Organization estimates, farmers will have to grow almost 30 percent more grain than they do now. Connoisseurs of human fecklessness will appreciate that even as humankind is ratchetting up its demands on soil, we are destroying it faster than ever before. "Taking the long view, we are running out of dirt," says David R. Montgomery, a geologist at the University of Washington in Seattle.

Journalists sometimes describe unsexy subjects as MEGO: My eyes glaze over. Alas, soil degradation is the essence of MEGO.

One subject that features in the article is soil restoration, including a look at "terra preta" - rich, fertile artificial soils found in the Amazon. In this post I'll have a look at modern day techniques to produce terra preta (often called biochar or agrichar) which have the potential to increase soil fertility, generate energy and sequester carbon all at the same time.

The fun thing about conferences is that there are also sorts of individual lines that presenters say that could be pulled to the headline, and perhaps be more mischievous than helpful. I was thinking that today, when the opening speaker began with explaining why she couldn’t start her talk with a joke. Turns out that when she tried to Google “ethanol and Joke” all she got was pages of citations of “ethanol is a joke” or “ethanol is a big joke!” Conference, you say, speaker, you say, but I thought the ASPO Conference didn’t start until tomorrow?

Well yes, that’s true, but sometimes if you want to catch some of the developing stuff, or the stories that never make it to the National Meetings, you can learn a lot from smaller conferences, and so I came to Dubuque. Today is the first of two days on “The Impacts of Increased Bio-Fuel Production on the Midwest Landscape.” At a time when the current ethanol situation has been described as “the farmer’s version of the gold rush,” it was interesting to hear what is happening down at the farm level and in planning within the Midwest to look at answers to the looming problem. Some of the papers today discussed switchgrass, and algae, and biodiesel and how to effectively harvest the “crappiest wood” in the U.S. and turn it into useful energy. And in the discussions, in a town where the corn grows right up to the airport runways, there was a lot of realism in the discussions of water needs, and soil nutrition replacement and bottom line cost levels.