Is there really no downside to Brazil’s agricultural miracle?

It’s not easy to explain the Brazilian agricultural miracle to a lay audience in a couple of magazine pages, and The Economist makes a pretty good fist of it. It points out that the astonishing increase in crop and meat production in Brazil in the past ten to fifteen year — and it is astonishing, more that 300% by value — has come about due to an expansion in the amount of land under the plow, sure, but much more so due to an increase in productivity. It rightly heaps praise on Embrapa, Brazil’s agricultural research corporation, for devising a system that has made the cerrado, Brazil’s hitherto agronomically intractable savannah, so productive. It highlights the fact that a key part of that system is improved germplasm — of Brachiaria, soybean, zebu cattle — originally from other parts of the world, incidentally helping make the case for international interdependence in genetic resources. 1 And much more.

What it resolutely does not do is give any sense of the cost of all this. I don’t mean the monetary cost, though it would have been nice for policy makers to be reminded that agricultural research does cost money, though the potential returns are great. The graph shows what’s been happening to Embrapa’s budget of late. A billion reais of agricultural research in 2006 bought 108 billion reais of crop production.

But I was really thinking of environmental and social costs. The Economist article says that Brazil is “often accused of levelling the rainforest to create its farms, but hardly any of this new land lies in Amazonia; most is cerrado.” So that’s all right then. No problem at all if 50% of one of the world’s biodiversity hotspots has been destroyed. 2 After all, it’s not the Amazon. A truly comprehensive overview of Brazil’s undoubted agricultural successes would surely cast at least a cursory look at the downside, if only to say that it’s all been worth it. Especially since plans are afoot to export the system to the African savannah. And it’s not as if the information is not out there.

A final observation. One key point the article makes is that the success of the agricultural development model used in the cerrado is that farms are big.

Like almost every large farming country, Brazil is divided between productive giant operations and inefficient hobby farms.

Well, leave aside for a moment whether it is empirically true that big means efficient and small inefficient in farming. Leave aside also the issue of with regard to what efficiency is being measured, and whether that makes any sense. Leave all that aside. I would not be surprised if millions of subsistence farming families around the world were to concede that what they did was not particularly efficient. But I think they would find it astonishing — and not a little insulting — to see their daily struggles described as a hobby.

Putting high-tech breeding in more hands

New Agriculturist has a long report about marker-assisted selection and cowpea breeding. The gist of it is that cowpea is susceptible to Striga, or witchweed, a parasitic plant that can destroy the harvest totally. A resistance gene turned up in “an unimproved variety from Botswana” 3 and is the basis of breeding programmes. Screening the results of crossing programmes conventionally is a nightmare, but a doddle if all you’re looking for is the presence of the resistance gene (or a marker close by). That, however, normally requires a well-equipped biotech lab. A UK charity, the Kirkhouse Trust, has been funding a consortium of cowpea breeders in west Africa with the specific aim of making marker-assisted selection available in the field.

The requirements for MAS boil down to a means of extracting DNA from the plant, and the equipment and reagents to then amplify the critical sequence in order to establish its presence or absence. The Trust’s priority has been to source reagents which do not require constant refrigeration and are not hazardous. DNA extraction has become a matter of squashing a leaf segment onto a specially treated paper, and the amplification reaction is provided in dry form, to which the user needs only to add water, and the DNA in the form of a small disc of paper.

One of the project’s six west African partners, in Burkina Faso, has made excellent progress and is now the focus of efforts and a training centre.

The key to the whole effort is the search for sustainability; the Trust believes that this is much more likely to be achieved by putting the technology directly into the hands of the practitioners, rather than by gifting it from on high. This way, the breeders themselves are more likely to have a stake in proving its worth and to be prepared to generate the internal pressure to incorporate MAS into their own national programmes over the long term.

I wonder, though, how many other valuable genes are hiding in unimproved varieties in Botswana and elsewhere. What about their sustainability?

Talking about an African Green Revolution

The African Green Revolution Forum (AGRF) focuses on promoting investments and policy support for driving agricultural productivity and income growth for African farmers in an environmentally sustainable way. The Forum, which stems from the African Green Revolution Conference in Oslo, is a private-sector led initiative which will bring together African heads of state, ministers, farmers, private agribusiness firms, financial institutions, NGOs, civil society and scientists, to discuss and develop concrete investment plans for achieving the green revolution in Africa.

It’s going on right now, and it’s getting the full social networking treatment. If you want to share corridor gossip, you know where to find us.

LATER: By the way, AGRA, one of the organizers, has also just started a blog.

Nibbles: Pavlovsk, Maize, Papaver somniferum, Organics, Zulu gardens, Feasts, Female farmers, Transhumance, Dogs

Nibbles: Biotech to the rescue, Chinese horses, Soybean carotenoids, CropMobs, Nutrition, Coffee pests, Varroa, Berries, NUS