Nibbles: Chickens, Realpolitik, Apples, Kew, Maize, Local food

Yemen may need taller wheat

Back when I made my living applying an outmoded and discredited paradigm by going around collecting germplasm, I had the great good fortune of visiting the Hardamawt province of what at the time was the People’s Democratic Republic of Yemen. The region, and in particular the beautiful and historic city of Shibam has recently been hit by devastating floods. I could link to news accounts, but I think the series of photographs Jeremy just sent me does a better job of summing up the situation than any number of newspaper articles.

Agriculture in the Hadramawt relies on spate irrigation:

Flood water from mountain catchments is diverted from river beds (wadi’s) and spread over large areas. Spate systems are very risk-prone. The uncertainty comes both from the unpredictable nature of the floods and the frequent changes to the river beds from which the water is diverted.

So flood damage is to be expected every once in a while, and people by and large know how to cope, though on this occasion the flooding seems to have been particularly bad. One of the ways people cope is by building strong houses. Some houses in Shibam are hundreds of years old, despite being made of mud brick. I remember that while collecting (this was 20 years ago) I asked people why they were still growing their local wheats rather than the new Green Revolution varieties. They said that the new varieties, though giving a higher grain yield, were too short, ((In fact, you could say they give higher yields partly because they are shorter.)) and they needed a lot of straw to make the mud bricks they used to build their homes.

Now, I haven’t been back to Shibam since then, and I don’t know whether the use of shorter wheats has spread. And I don’t know whether even if they have this has affected the quality or quantity of the local bricks. But I wonder.

American farmers got stoned a lot

Two articles this morning both point to the widespread use of hallucinogenic plants in ancient South America. National Geographic reports that traces of the mind-altering substance harmine have been found in the hair of Tiwanaku mummies from the coastal Chilean desert dating back to 800-1200 AD. Harmine comes from the Amazonian vine Banisteriopsis caapi, which suggests that an extensive trade network linked the rainforest to the desert. Elaborate sniffing kits have been found in many Tiwanaku tombs and also, as a Times article points out, at the other end of the continent in the Caribbean. Archaeologists have found ceramic bowls and inhaling tubes on the island of Carriacou and have identified them as originating in South America between 100-400 BC. The drug of choice in this case may have been cohoba.

So why was everyone getting high?

Richard Davenport-Hines, a former history lecturer at the London School of Economics and author of The Pursuit of Oblivion, a global history of narcotics, believes humans have been using drugs for thousands of years. “Drug use became widespread in many early agriculture-based societies simply because it was the only way people could cope with spending long hours working in the fields, often in horrible conditions like baking sun,” he said.