Jeremy had a post recently on how to keep track of emerging pests and diseases. Certainly services like ProMED-mail and HealthMap are incredibly valuable. But perhaps even better would be a way to predict what a disease might do before it actually does it, for example as a result of climate change. That’s what some Czech researchers have done for the European corn borer, a pest of maize. ((There’s also an assessment of the risk of spread to new areas in a recent study of the root-parasite Orobanche crenata, but that paper did not specifically consider climate change in any detail.)) They modelled its life cycle on the basis of daily weather data, both current, to see if the model fit reality, and possible future, to predict what the pest might do under different climate change scenarios. The result was that the corn borer will cover the entire agricultural area of the country by 2040-2075, by which time “maize is expected to partly replace traditional cereals (e.g. winter wheat, rye, etc.).” That’s a frightening prospect. Better start planning – and breeding – for it now. ((A recent paper on wheat spot blotch in the East Gangetic Plains of India, Bangladesh and Nepal describes how breeding has made good resistant varieties available, but adds that climate change is tilting the playing field in favour of the disease, which means that breeders can’t afford to rest on their laurels.))
Earthworms, nematodes, bananas
There’s an interesting paper in the latest Pedologia. Researchers grew Cavendish bananas in all combinations of with and without an endoparasitic nematode, and with and without an earthworm. They found that the banana plants did better when there were earthworms around, which slightly alleviated the root damage done by the nematodes and made more nutrients bioavailable. This is a great illustration of the importance of having an understanding of agricultural biodiversity as a whole, in the sense of all the different organisms — including crops, pests, symbionts, whatever — that interact in a farming landscape, affecting each other’s performance. These kinds of interactions are what organic agriculture aims to maintain, and why silver bullets rarely work.
Basmati rice on the rise
India’s Financial Express has a piece describing some of the recent history of Basmati rice. I guess it’s a fairly familiar story, but a couple of things stood out for me as I read it. One was that India and Pakistan “are planning to jointly claim rights for geographical indications (GIs) for this aromatic long grain rice.” Another was that the “European Union … is in favour of duty derogation for import of Basmati having pure parental lines.” So not landraces, just newly bred Basmati varieties? Finally, I found the link between Basmati and organic agriculture intriguing.
Ugandan discussions
Ugandan minister of Agriculture Hilary Onek has been talking to Chinese officials about increased Chinese investment in modernizing Uganda’s agriculture. Onek’s main desire seems to be to increase the use of fertilizers and certain types of high-yielding seed. It sounds like the same old same old, with no thought for either traditional smallholder expertise or their approach to new technology. But maybe all that hi-tech investment really is what Uganda and China need.
Ugandan farmers call home
VOA News has a great article (and some audio as well) describing how a Dutch NGO is helping Ugandan farmers exchange agricultural information using mobile phones. If any of the farmers involved has a problem with their cassava, say, or wants to take up a new crop or variety, or get the best price for their honey, the information they need is often just a phone call or sms away. Farmers have great traditional systems for sharing information, but they are often overlooked or at any rate undervalued by development workers. This approach would seem to be a great way of valuing, strengthening and allowing farmers to build on those systems.