And, in the industrial corner …

Everyone’s jumping into the industrial versus organic fray (again) with most of the usual suspects making most of the expected noises. One contribution, though, did surprise me somewhat. I have a lot of time for Matt Ridley’s writing, and I’m looking forward to his new book The Rational Optimist. At his blog devoted to the book he has a post on “organic’s footprint” that is either deliberately misleading or else accidentally thoughtless.

One foolishness that a commenter there has already picked up on is this:

Given that … it takes just about the same calories of fossil fuels to get an organic lettuce from a Californian farm to a plate in New York — 4,600 versus 4,800 (numbers from Michael Pollan’s Omnivore’s Dilemma) — can we please have a little less preaching of organic’s holiness?

Talk about a straw man. Who, seriously, imagines that an organic lettuce from California is a good substitute for an industrial lettuce from California in New York? No-one I know, apart maybe from some organic marketeers, who are no better than marketeers anywhere.

Ridley’s main point seems to be that cereal yields per hectare have risen steadily since the 1960s.

That remarkable achievement is mostly down to the fact that most farmers now get extra nitrogen straight from the air, via ammonium factories, rather than from plants, dung and dead fish — the `organic’ way.

If the world was fed with organic food, it follows, we would need to cultivate or otherwise exploit far, far more land to get the plants, dung and dead fish to produce the same amount of food. As I submit to being preached at by organic farmers about their virtue, this fact keeps creeping into my head. Wholly organic farming means no rainforests or it means hunger and high food prices.

A phalanx of straw men. Never mind about the energy needed to get that nitrogen from the air. He could perhaps persuade me to be optimistic about that, even though things aren’t moving too fast on that front. Water? Other energy needs? Why not go the whole rational hog, and press for the Müller solution. Move all agriculture to where it does best, and give it what it needs to deliver. You could grow all the food that 12 billion people would need, with double today’s meat consumption, in a fraction of the area currently occupied by agriculture (see maps in this paper).

I’m not going to dissect Ridley’s post point by point. It isn’t worth it, and Gary has already provided the excellent synthesis that Luigi craved. To quote:

Good farmers are never “organic”. They also aren’t conventional as they are characterized by “organic” growers. The caricatures are devised by “organic” advocates to demonize other growers in the hope of somehow elevating themselves. Good farmers are concerned with producing good food and doing good land management so that they and their descendants can earn a living farming in future. The production methods they use are evaluated by that standard rather than a set of taboos or ungrounded regulations. They are realists who will use any available method that helps them achieve their objectives.

To which I would add that it isn’t only the organic farmers who demonize others. Bagmen for conventional agriculture are just as capable of demonization, as Ridley so eloquently demonstrates. But I’ll give Gary the last word, for now.

There’s a lot of room for improvement. We can get very much better at agriculture. The sterile conflict between “organic” and other growers does not help. We need to move beyond organic to a more reality based agriculture that is grounded in knowledge rather than superstition.

Industrial vs Organic, seconds out, round 654

Jeremy’s brief post on Prof. Robert Paarlberg’s love note to industrial agriculture in Foreign Policy has generated quite a heated discussion. That’s what we like to see, so do join in if you haven’t done so already. Foreign Policy has also published something of a rebuttal. And, coincidentally (or maybe not — but Paarlberg is not mentioned) so has mongabay.com. Thesis. Antithesis. Still no sign of that pesky synthesis.

LATER: Marion Nestle has also just published something relevant to this somewhat sterile debate, though in response to the “superweed” story in the NY Times that’s been going viral rather than in direct response to Paarlberg.

Nibbles: Microlivestock, Urban ag, Ag info, School meals in Peru, Agrobiodiversity indicators, Nature special supplement, Extension, Breeding organic, Forgetting fish in China, Deforestation, Russian potatoes, Fijian traditional knowledge, Megaprogrammes

What are breeders selecting for?

ResearchBlogging.org One of the arguments in the organic-can-feed-the-world oh-no-it-can’t ding dong is about the total yield of organic versus non-organic. ((For want of a suitably non-judgemental term.)) Organic yields are generally lower. One reason might be that, with a few exceptions, mainstream commercial and public-good breeders do not regard organic agriculture as a market worth serving. The increase in yield of, say, wheat over the past 70-80 years, which has been pretty profound, has seen changes in both agronomic practices — autumn sowing, simple fertilizers, weed control — and a steady stream of new varieties, each of which has to prove itself better to gain acceptance. Organic yields have not increased nearly as much. A new paper by H.E. Jones and colleagues compares cultivars of different ages under organic and non-organic systems, and concludes that modern varieties simply aren’t suited to organic systems. ((JONES, H., CLARKE, S., HAIGH, Z., PEARCE, H., & WOLFE, M. (2010). The effect of the year of wheat variety release on productivity and stability of performance on two organic and two non-organic farms The Journal of Agricultural Science, 148 (03) DOI: 10.1017/s0021859610000146))

The basics of the experiment are reasonably simple. Take a series of wheat varieties released at different dates, from 1934 to 2000. Plant them in trial plots on two organic and two non-organic farms for three successive seasons, measure the bejasus out of everything, and see what emerges. One of the more interesting measures is called the Cultivar superiority (CS), which assesses how good that variety is compared to the best variety over the various seasons. As the authors explain, “A low CS value indicates a cultivar that has high and stable performance”. The expectation is that a modern variety will have a lower CS than an older variety, and for non-organic sites, this is true. At organic sites, the correlation is much weaker.

You can see that in the figure left (click to enlarge). For the open circles (non-organic) more modern varieties have lower CS (higher, more stable yield), while for filled circles (organic) there is no relationship. Why should this be so. Because of those changes in agronomic practices mentioned above.

[M]odern cultivars are selected to benefit from later nitrogen (N) availability which includes the spring nitrogen applications tailored to coincide with peak crop demand. Under organic management, N release is largely based on the breakdown of fertility-building crops incorporated (ploughed-in) in the previous autumn. The release of nutrients from these residues is dependent on the soil conditions, which includes temperature and microbial populations, in addition to the potential leaching effect of high winter rainfall in the UK. In organic cereal crops, early resource capture is a major advantage for maximizing the utilization of nutrients from residue breakdown.

To perform well under organic conditions, varieties need to get a fast start, to outcompete weeds, and they need to be good at getting nitrogen from the soil early on in their growth. Organic farmers tend to use older varieties, in part because they possess those qualities. Concerted selection for the kinds of qualities that benefit plants under organic conditions, which tend to be much more variable from place to place and season to season, could improve the yileds from organic farms.