The keyhole to self sufficiency

Luigi’s nibble of the keyhole gardens of Lesotho resonated with me for a couple of reasons. First, it showed that at least some people are not sitting about waiting for the rest of the world to solve the food crisis for them. More than that, though, it set me to thinking about this type of garden.

The BBC, with its customary ahistoricity, seems to think keyhole gardens are utterly novel and “home-grown” in Lesotho. Actually, they have a long history. I first came across them in a demonstration garden by Horticulture Therapy (now known as Thrive). They are round beds, raised to make it easy for people in a wheelchair to tend to the plants, and sized so that one can reach the middle of the bed either from outside the circle or from inside the slot that gives the garden its name. To be honest, I’m not sure who invented them. Permaculture practitioners often take credit for popularising the concept, but I’m sure I’ve seen earlier designs, including lung-like ones in which branching paths end in alveoli that allow access to the entire bed.

The point about keyhole type designs (whether raised for wheelchair users or not) is that they eliminate the need to tread on the soil, which is bad because it can lead to compaction and all the evils that brings. Keyholes, however, are just one manifestation of no-dig gardening. ((Which I am not going to link to because there are so many sites, I don’t want to single out any one of them.)) The shape of the bed is immaterial; what matters is that you don’t step on it and that you don’t destroy the soil structure by turning it upside down once or twice a year. And no-dig of this sort is just one manifestation of very intensive horticulture. ((To which I will definitely link: John Jeavons and Mel Bartholomew are the gurus, although there are others.)) And the weird part about no-dig, intensive horticulture is that it seems to be the child of affluence and self-sufficiency.

The poor, who need more than ever to be self-sufficient, have not generally been treated to these techniques.

It isn’t glamorous and it isn’t high tech, but it can deliver far more food than any other method. Not the calories of starchy staples, perhaps, although potatoes and other roots and tubers certainly do well in no-dig beds, but a wonderfully nutritious and satisfying diversity of fruit and vegetables. Furthermore, as the Lesotho example shows, there’s often a surplus to sell nearby.

One problem, I suspect, is that precisely because it isn’t high-tech and glamorous, intensive no-dig horticulture requires cadres of trainers. The system also needs to be tailored to people’s preferences and local conditions. I expect that the best way to propagate it would be to have demonstration villages that could train trainers and send them out into their world to spread the news. Wait a minute! Isn’t that something that Jeffrey Sachs’ Millennium Villages could be doing? ((What do you mean they don’t work?)) But I digress.

It seems to me, sitting here at the back of the Hall of Flags in the belly of the FAO beast, that widespread adoption of intensive, no-dig horticulture wherever poor people have access to at least a little land could do an enormous amount of good. There are opportunities for entrepreneurship and empowerment, and a prospect of real improvement. I just have no idea how to get something like that rolling.

The snatches I’m hearing from the statements and discussions (and I’m not privy to much corridor conversation) are all about high-yielding seeds and fertilizers (made from expensive oil) and irrigation. That package may have done as much good as it can.

Would it hurt to devote a small percentage of the millions being pledged to a different approach? Come to that, would anybody who is as appalled as I am about the same-old same-old being peddled as a solution care to bankroll something different?

Subsidise me, please

A little while ago a commenter asked why I hate subsidies so. I said I’d try and work something up, but the truth is that because this isn’t really my field of expertise, I rely on others. What I’ve read in the past has convinced me that production subsidies in general are a very poor idea, but I would only be parroting what I’ve read if I were to explain why. Fortunately I don’t have to.

There’s a somewhat brief discussion at an Economist blog. Better yet, Tim Haab at Environmental Economics has recently done a very good job of explaining, in reply to a student question. This is Haab’s own summary:

Who benefits from U.S. farm subsidies?

1. U.S. farmers—increased income

2. Foreign consumers—lower prices and increased quantity supplied of staples

Who is hurt by U.S. farm subsidies?

1. U.S. consumers—someone has to pay for the subsidies and that will come in the form of higher taxes and higher domestic food prices.

2. Foreign farmers—crowded out of the market by the surplus crop generated in the U.S.

Actually, you can delete U.S. from that without altering the arguments one bit. Subsidies generally create a surplus, and governments sell that surplus on world markets at whatever price they can get to reduce the cost of the subsidy. That can be good news for famine relief agencies, who may be able to get their supplies at low cost. But the gifts to rich country farmers damage farmers in poorer countries, who cannot compete with subsidized imports. They also damage the health of consumers there and at home, because the products that are available cheaply are generally rich in energy but very poor in other nutrients. Subsisting on a diet of cheap wheat flour fried in cheap oil and dusted with cheap sugar may prevent hunger, but it brings ill health in its wake.

There are many other ill effects of subsidies that people more expert than me have examined at length, but that’s enough to be getting on with and I think it justifies my dislike for them. In fact a few years ago the organization I work for, which is dedicated to improving the lot of poor rural farmers, was examining its future and wondering what directions it should take. At a retreat we were asked what the single most important contribution we could make would be. I said, “quit and devote ourselves to dismantling agricultural subsidies”. There was a somewhat embarrassing silence.

There are ways of supporting farmers that don’t encourage over-production. One is to pay the farmers not for what they grow but for how they grow it. Pay them for managing the landscape, in other words, and for providing goods and services such as cleaner water, hedgerows, public access and that sort of thing. One that I used to be a bit familiar with was Tir Cymen, a scheme in Wales ((Which, strangely, is not easy to find written-up on the intertubes.)). Farmers had to draw up a plan for environmental management, which if approved resulted in additional payments to them. As I recall it was pretty successful, and there other similar schemes dotted around Europe, which is still struggling to get rid of its main forms of (production) subsidy.

Most subsidy schemes in the developed world were created some time ago when there was a desire to support small farmers and secure domestic food supplies. They have been subverted by changes in the nature of farming, such that most of the cash goes to a few farmers (or farming companies) and the small farmers continue to struggle. The big ones, the ones getting the big money, can afford to lobby hard to protect their incomes. In times of crisis starving people may benefit from subsidized food, but rich governments might actually save money by simply buying food when emergencies require it and giving that food to the relief agencies.

All that is why I hate subsidies. Over to you …

Banana news from all over

Paul Krugman, the economist, blogs over at the New York Times that he is reading Dan Koeppel’s “Banana.” This is A Good Thing, not only because the book is a good read but also because there’s just a slim chance that Mr Krugman will eventually make a contribution to the debate around the costs and benefits of conserving agricultural biodiversity. Strangely, Krugman seems to think that the book is “not especially relevant to current events.” Maybe not directly, but there are certainly lessons to be learned and parallels to be drawn.

I, however, am not about to do that. Instead, I’m going to jump aboard Krugman’s coat-tails ((Not an easy trick when the Great Man completely ignores the little flea upon his back and fails to approve the little flea’s comment.)) and address some of the points raised by some of the people who commented on his post.

Michael Donnelly asks, “Does that book explain why bananas are so cheap? 49 cents a pound still at my grocery store during a time of rampant food inflation.”

Yes and no. One reason some bananas are so cheap is that stores use them as a loss leader. They’re so perishable, even with careful management, that it pays the store to entice you in with bananas at a temptingly low price, hoping that once you’re in you’ll then buy something more profitable as well. The store makes less of a loss on a cut-price banana it sells than on a high-priced one it doesn’t.

David says, “Koeppel also explains why bananas used to taste better: the variety of banana we get in most supermarkets is thick-skinned and bred for hardiness rather than taste. Travel to Puerto Rico or Latin America and the bananas are locally grown, of different varieties, and delicious. Does globalization drive our goods toward mediocrity?”

I’m not going to go down the mediocrity road, but the assumption that the modern Cavendish banana was bred for hardiness rather than taste is not true. It wasn’t really bred for anything. It just happened to be resistant to Panama disease, which wiped out previous commercial plantations dominated by the variety Gros Michel. As it happens, Gros Michel does taste better, at least to me, but it can no longer be grown on the massive scale needed for global trade. Cavendish is heading in the same direction.

In similar vein, Nick S’s comment that grocery store bananas are so tasteless because Americans get theirs from the mainland, while the British get theirs from their former Caribbean island colonies, is probably not entirely correct. More likely, the British simply took better care of their bananas during ripening.

Tim Kane said, “If you like reading about the history of commodities, then I recommend to everyone that they read the book that started this genre: Henry Hobhouse’s “The Seeds of Change: Six plants that transformed mankind.”

Well, call me an old nit-picking fuddy-duddy, but the original version of Hobhouse’s book (which certainly did not start the genre) was “Seeds of Change: Five plants that transformed mankind.” He added coca at a later date.

Skeptonomist asked, “How do they keep the bananas from turning black in those refrigerated banana boats?”

The bananas aren’t yet ripe. In fact, they are very under-ripe. They are shipped green, and then ripened by raising the temperature and pumping in ethylene gas, which ripening bananas produce and which speeds ripening in unripe fruit. Which is why a good way of ripening other fruit, and that includes tomatoes, is to enclose them in a paper bag with a ripe banana. The banana gives off ethylene, which spurs other fruits to ripen. To get back to the main point, unripe bananas do not go black in the fridge, ripe ones do.

That’ll do for now, although if you’re interested there’s an interview with Koeppel at National Public Radio. (I haven’t listened yet.) Crucial points to bear in mind:

Despite being paragons of globalization, bananas are actually much more important locally than internationally. Most bananas are eaten within 25 km of where they were grown. India’s domestic consumption alone is greater than the international trade. And in much of Africa bananas are the number one source of energy.

Although there are hundreds of banana varieties, the individuals of each are genetically identical. Because varieties are multiplied by “cuttings” and because sexual recombination is so damn difficult to achieve in bananas, breeding is incredibly difficult. And because individuals are genetically uniform, a threat to one is a threat to the whole plantation. So when a pathogen mutates to attack a previously resistant variety — as Panama disease has mutated to attack Cavendish — and when there are no known fungicides, what price then the world’s favourite desert fruit?

My question to Paul Krugman, then, is this: what contribution, if any, should the big banana companies make to banana conservation and breeding?

Active ingredients: who needs ’em?

A comment from Karl of Inoculated Mind, on the great Organic Tomato Debate, gives me an opportunity to sound off again on something I feel quite strongly about. That’s because, although a superficial reading of his comments and mine might suggest we disagree, at base, we don’t. Karl’s bottom line reads:

Bottom line: just eat your veggies!

And with that I totally and wholeheartedly agree.

At issue is the nutritional value of organic versus conventional tomatoes and, by extension, other veggies. The thing is, that comes after a discussion in which I say that more than flavonoids is likely to differ between organic and conventional. Karl points out that some compounds that plants produce in response to attack might be harmful, rather than beneficial, to humans. I moan on about the importance of dose.

Karl comes back with a link to a study of a genetically modified carrot that shows that “if you eat a serving of the modified carrot, you’d absorb 41 percent more calcium than from a regular carrot.” But the same report says that the daily requirement for calcium is 1000 milligrams, and that a 100 gram serving of the modified carrots offers only 60 milligrams, of which only about 24 milligrams is actually absorbed.

In other words, you could not possibly eat enough of the carrots to get your calcium without suffering beta-carotene poisoning, which just goes to reinforce my point about dose being important. ((I am certain I remember the case of a bloke in England who actually killed himself with excess carrot juice, but I cannot find it on the tubes: too much botulism and other nonsense clouding the results.))

The bigger point is that there is an obsession with active ingredients. Increasing the amount of this, that or the other is held to produce this, that or the other beneficial effect. And yes, maybe it does. And maybe it doesn’t, and maybe you can go too far. But people don’t eat active ingredients, unless they are rather far gone already. They eat food, and meals. And the interactions among foods and within meals mean that as far as the details of nutrition, especially micronutrition, go, all bets are off.

A far, far simpler way to boost nutrition and health is simply to eat different things, and lots of them, and forget about active ingredients, and high-lutein tomatoes, and super-calcium carrots, and golden rice, and flax oil, and all the other things that are touted because they contain more of some good thing.

Just eat your veggies. And your meat and fish. And your dairy. And your fruits and nuts. And everything else. Dietary diversity is the answer. ((And lest I am accused of ignoring poor people who cannot afford to buy anything, let alone organic tomatoes, it is probably more important to them than to the rest of the world that they maintain and expand the diversity of things they eat. But that’s another story for another time.))

Stalking the wild peanut

A propos of the peanut’s past, it just so happens that one of the great peanut people of the world (as immortalized in this specific epithet) now lives just down the corridor at work. So I showed him that article. He was well pleased to see it, explaining for me how it confirmed previous ideas based on crossing and geography. Then, on the way out, he casually mentioned that seeds of one of the ancestors had been collected only once, and that it had never been found again.

“It’s probably extinct,” he said.

Ipaensis Well, that certainly adds a certain spice to an otherwise moderately routine story, I thought. So at the first opportunity I asked Luigi, who understands these things, to gbif A. ipaensis for me. ((Webbies are well aware of the verb “to google.” To GBIF is not yet a verb, as far as I can discover. Probably not in the present tense, and definitely not in the past. I hereby lay claim to it.)) Quick as a flash, he sent me arachis.kml, a KML file for Google Earth. There were precisely two entries, one for the type specimen at the Missouri Botanic Gardens and one for an accession in the USDA genebank. To me, they looked suspiciously located, on exactly the same latitude but about 45.5 km apart. And while the USDA’s specimen was reasonably near to a stream, Missouri’s was nowhere near water that I could see.

Arachis Ipaensis Luigi quickly confirmed that the Mo specimen, collected in 1971 and thus well pre-GPS, was probably in the wrong place; OK. These things happen. Then he was on the IM again, telling me that I could look at an image of the type specimen (that’s it over there) and that the USDA specimen was “unavailable”.

“What’s that mean?”

“Could be dead. Could be regenerating and they don’t have stock.”

“Bummer.”

“Yeah.”

And then we went about our independent business for a while until he sent “Can you imagine how hard that would have been 10 years ago? Or even 5?”

And it’s true. A few quick clicks, some very spiffy intertube tools, and we had the kind of information that could have taken months to gather back in the day. Information is going to be the life and death of efforts to conserve and make use of agrobiodiversity. And easy though it was to find out a bit about A. ipaensis, we don’t really know anything about the plant itself. Is it drought tolerant? Disease susceptible? Fertile with A. hypogaea? Got good genes?

And, in other Arachis news:

That’ll do, for now.