Planting a barrier to block UG99 wheat rust

An article in the November issue of Agricultural Research magazine, house organ of the US Department of Agriculture, warns: “World Wheat Supply Threatened!” complete with exclamation point. Well, yes, as we have indeed pointed out before. However, the article’s subtitle explains: “Luckily, research is under way to defend this grain of life.”

Phew! They had me worried.

Hidden in the write-up, which is to-the-point and interesting, is what struck me as a pretty off-the-wall suggestion. US scientists plan to focus resistant varieties (if and when they are developed) in southern states such as Texas, Georgia and Louisiana. The spores of UG99 can overwinter in the warm climates of the South, so the hope is that by preventing the disease getting a hold there, they can prevent it spreading to the rest of the country. Intriguing idea, but I wonder whether it really stands a chance.

There’s more in the article, on the resistance genes that might be inserted into US wheats and on the vital role of properly trained people in the field, who spotted UG99 early on and were able to sound the alarm.

High Plains Drifting

Wheat being nudged and prodded into perenniality, and local perennials the other way ((That’s the Land Institute stuff we’ve blogged about before.)); cows managed like bison, and bison managed like cows (including by media moguls turned restauranteurs); reenactments of Custer’s Last Stand, and Indian retirees going home to the reservation; farmers paid to retire some of their acres so grasslands can make a comeback, and high-tech plants turning corn into diapers. There sure is some funny stuff going on in the Great Plains, that sixth of the continental US between the foothills of the Rockies and the 98th (or possibly the 100th) parallel. Read all about it in National Geographic’s Change of Heartland. The feature is from a couple of years ago, but still well worth checking out, if only for the photos. And thanks to Kem and her friend for pointing it out to me.

Interacting nutrients

We’re always saying how agrobiodiversity includes all kinds of different things — crops, livestock, wild relatives, pollinators, microbes — which interact in often complex ways. Mess with one part, and you often unintentionally affect another.

Well, it looks like those interactions continue once the products of agrobiodiversity are harvested and eaten. A review described in ScienceDaily today says that people should worry less about individual nutrients and

shift the focus toward the benefits of entire food products and food patterns in order to better understand nutrition in regard to a healthy human body.

For example, there is little evidence, according to the researchers, of long-term health benefits from taking isolated supplements of beta-carotene and B-vitamins, or from reducing total fats.

In contrast, myriad observations have been made of improved long-term health for foods and food patterns that incorporate these same nutrients naturally occurring in food.

So it’s the foodway as a whole, rather than intake of individual nutrients, that needs to be optimized. Which I guess should give pause to those — like me! — who hope that, for example, things like deep yellow sweet potatoes or bananas will solve the problem of vitamin A deficiency.