Surveying diversity

The kind of survey where a researcher turns up at farmers’ houses and starts asking a lot of standard, rigid questions about the problems they have been having with their crops and livestock has been somewhat unfashionable of late. In fact, one of the reasons for the explosion of rapid rural appraisal (RRA) methodologies in the 1980s, followed by more participatory, often qualitative, methods (PRA) in the 1990s, was so-called “survey slavery: questionnaires surveys which took too long, misled, were wasteful, and were reported on, if at all, late.” ((See this note prepared for participants in a workshop on PRA.))

A way — in fact, a whole menu of ways — was found, as a result of the pioneering work of some NGOs and universities, of allowing people, even marginalized groups, to set the very agenda of research, as opposed to just answering a bunch of questions that researchers thought interesting.

But there is a place for well-designed, carefully tested and sensitively-administered surveys to document and analyze the ways farmers manage their resources — including their agrobiodiversity — and to provide a baseline against which to gauge the effectiveness of interventions or other possible changes. I want to talk about two recent papers that use farmer surveys to characterize farming systems, as examples of the kind of thing there might be more of in agricultural biodiversity work.

The first paper, on surveys of smallholder families in northern Pakistan, focuses on livestock production. ((Abdur Rahman, Alan J. Duncan, David W. Miller, Juergen Clemens, Pilar Frutos, Iain J. Gordon, Atiq-ur Rehman, Ataullah Baig, Farman Ali and Iain A. Wright. Livestock feed resources, production and management in the agro-pastoral system of the Hindu Kush-Karakoram-Himalayan region of Pakistan: The effect of accessibility. Agricultural Systems, In Press, Corrected Proof, Available online 5 July 2007. http://dx.doi.org/10.1016/j.agsy.2007.05.003)) The surveys were done along two transects which contrasted markedly in their transport infrastructure. One of the things the researchers looked at was the percentage of cross-bred animals per household. They found that there was a higher proportion of such improved animals in the transect with well-developed transport links and more accessible markets than in the more isolated area. As the roads get better in this latter area, the researchers think that “the proportion of traditional, unimproved animals … is likely to diminish,” and there are also likely to be “changes in land use towards higher-value commodities such as potatoes.” An interesting conclusion about likely genetic erosion — in both crops and livestock — in the region. One could imagine using this kind of information to identify areas throughout the country which are at high risk of genetic erosion due to impending road building or improvement.

The second paper looked at the adoption of soil conservation practices in Kajado district, in the Rift Valley province of Kenya. ((Jane Kabubo-Mariara. Land conservation and tenure security in Kenya: Boserup’s hypothesis revisited. Ecological Economics, In Press, Corrected Proof, Available online 9 July 2007. http://dx.doi.org/10.1016/j.ecolecon.2007.06.007)) The researcher, Jane Kabubo-Mariara of the University of Nairobi, was particularly interested in whether population density and land tenure arrangements had an effect on the likelihood of farmers constructing soil bunds and terraces and planting trees. She found that as population pressure increases, there is a “significant shift towards increased individualization of tenure” and also a “higher probability of adoption of soil bunds and planting drought-resistant vegetation.” Now, that’s fascinating enough, but what caught my attention was the dog that didn’t bark. Wouldn’t it have been interesting to know whether farmers in high density areas grew more or fewer crops, and more or fewer varieties of each?

Cassava in Africa

Cassava has a big problem in Africa, and it is called brown streak virus. A virulent strain is spreading rapidly across eastern and southern Africa from a beachhead in Zanzibar, devastating the tubers but leaving the leaves looking healthy, which means farmers don’t realize anything is wrong until it is too late. Scientists from the International Institute for Tropical Agriculture (IITA) have been studying the virus and have developed resistant varieties, by conventional breeding, and these are finding their way to farmers.

There’s a short SciDev piece about brown streak virus which points to a longer, very readable New Scientist article. I know we’re talking about a very serious problem and a very nice solution based on the exploitation of agricultural biodiversity, but normally I wouldn’t blog about this sort of thing, simply because there are so many similar examples out there. But I was inspired to do so on this occasion because I also spotted an article in a Ugandan newspaper (via the wonderful allAfrica.com) which talks about the resistant varieties and efforts to get sufficient planting material of these cultivars into the hands of farmers in a particular district. It’s always nice to see “big” stories from international news sources reflected in the local media.

Cassava is an important constituent of Kinshasa’s urban gardens, whose role in providing nutrition, especially to children, is so well described in a Christian Science Monitor article today. Let’s hope brown streak virus doesn’t reach Kinshasa, but if it does the resistant varieties would find a ready means of dissemination through a project which “organized a team of local volunteers called “Mama Bongisa” (‘mom improver’) to teach mothers in some … impoverished neighborhoods about nutrition and farming.”

Durum wheat erosion

If there’s a dominant meta-narrative in agricultural biodiversity circles it is that modern breeding programmes relentlessly decrease the genetic diversity of crops, increasing yields and quality but also, as new varieties displace landraces and older varieties in farmers’ fields, depleting the very resource on which they are dependent for continued success. But actually there’s not really that much in the way of hard figures on this process. So a recent paper on what breeding has done to diversity in Italian durum wheat is very much to be welcomed.

The researchers used molecular and biochemical markers to compare genetic diversity among five different groups of durum varieties, ranging from landraces from before 1915, to pure lines derived from landraces in the 30s, to genotypes selected from crosses between local material and CIMMYT lines in the 70s. In general, there was indeed a narrowing of the genetic diversity within these groups over time. In fact, the degree of narrowing was probably underestimated, because only a relatively few of the pre-1915 landraces were still available for analysis. Conserving what is left is all the more important.

Wikiseedia: what is it?

Seedpod There’s a long and detailed message from the folks at WorldChanging about something they call SeedPOD. It isn’t clear exactly what this resource will be. A sort of information exchange, but also a network for exchanging seeds and maybe too a platform for sharing experiments and results in more sustainable agriculture. As they describe it:

an imagined toolkit to keep seeds moving, farmers thriving and communities fed in the face of massive environmental change. Perhaps it will trigger some interesting thinking out there: at very least, we hope you find it briefly diverting.

All this seems to be organized through something called the Wikiseedia, but as far as I can see there is no link to this fabulous beast. Go to www.wikiseedia.com, however, and you see a bare bones installation of a wiki (a special kind of web site that anyone can contribute to and edit) that contains no content (yet?) and that has not been changed since 5 March 2007. WorldChanging’s post is dated 27 April.

There’s something happening out there. What it is ain’t exactly clear. But it will bear watching. At least, I hope it will, because it sounds really exciting.