Author: Jeremy Cherfas

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Educated fruit

This story — EARTH University Bananas and Pineapples Arrive in Whole Foods Markets’ Stores in the Southeast — needs a bit of unpacking.

There is an agricultural university in Costa Rica called EARTH; Escuela de Agricultura de la Región Tropical Húmeda. EARTH was founded in 1990 on a former banana plantation, and has its own model banana farm. Also, two pineapple plots. It aims to teach a kind of ethical agriculture. Profits from the sales to Whole Foods Markets support scholarships and research and investment in pineapple production. The Southeast in the story refers to Atlanta, Georgia, USA.

Even though Whole Foods Markets is an 800 lb gorilla, on balance this is probably A Good Thing.

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GI had no idea there was so much diversity

We know hardly anything about the differences among varieties of the same crop. Oh sure, we know what different varieties look like; that’s easy. But detailed differences in composition are hard to find. There are the classics, of course, like wetet be gunche sorghum in Ethiopia, whose name translates as “milk in my mouth”. It contains almost a third more protein than other sorghum varieties and, even more important, about double the level of lysine, a vital amino acid for human nutrition. And there are the red and black varieties of rice, which are known to be high in iron and other minerals and vitamins and which are traditionally used to treat anaemia, especially in pregnant women. (I have been unable to discover whether this treatment is effective, in a Western sense, but it seems entirely reasonable, and a bit churlish to deny it.) But in general, we know next to nothing about the nutritional qualities of varieties, as opposed to species.

Continue reading “GI had no idea there was so much diversity”

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New approaches to crop rotation

Many intensive farmers — and most gardeners — use diversity in time to improve their harvests. They change the crop growing on a particular piece of land from year to year. Legumes add nitrogen to the soil, which the following crop, perhaps a cereal, uses up. That’s the simplest rotation, and soybean-maize covers vast swathes of land. But with the increasing unpredictability of conditions, more complex systems may be more beneficial. Indeed, recent research suggests that a dynamic rotation, which draws on a larger selection of crop diversity and which changes the exact pattern of rotation depending on recent past events, may be the best option yet.

A symposium in 2005 heard reports from USDA scientists who had conducted experiments in dynamic cropping; that symposium has now been published in Agronomy Journal. Access is restricted, so I’m glad that Biopact has quite a detailed analysis, even though I cannot discover from its web site who is behind Biopact.