R&B

A large number of variations on one simple (and very nutritious, being as how one is a cereal and one is a pulse) dish: rice and beans. Everyone who’s anyone (at least in the pressure cooker world of US-based food blogging) is there, with some nifty ideas on that lysine-tryptophan feasteroni.

High food prices and PLWHA

You’ll remember that I recently bewailed the lack of studies documenting and promoting the use of agrobiodiversity in coping with HIV. But Peace Nganwa, an intern at the African Centre for Food Security, University of KwaZulu-Natal, must have access to some relevant data on this because she suggests that recent food price increases have resulted in reduced dietary diversity, among other things:

In the face of these price hikes, households and communities have to adopt coping strategies to enable them to survive. Some of these coping strategies include: change in diet such as reduced food intake, lower food quality and reduced dietary diversity; seeking wage employment; temporary or in the worst case permanent migration; sale of productive and non-productive assets; and withdrawal of children from school.

In a very cogent article at AllAfrica.com she describes why good nutrition is particularly important to those living with HIV.

Firstly the infection-illness period, which on average is about eight years, can be extended by a good diet, among other things. People infected by the virus have up to 50 per cent more energy requirements (100 per cent for children) than people who are not infected. Secondly good nutrition both in quality and quantity is vital in the prevention of opportunistic infections which occur because of reduced body immunity. A sound diet may therefore prolong life; more especially delay the progression of HIV to AIDS. Thirdly adequate nutrition is of utmost importance to the patients on anti-retroviral therapy. Some drugs must be taken with food and most are not effective if the patients are malnourished.

I just don’t get why there seem to be so few studies and interventions out there trying to help PLWHA by promoting diverse crops for diverse diets, especially in urban settings. Tell me I’m wrong. Please.

Over-utilized crops?

Thinking about biofortification, I imagined a world that relies on fewer and fewer over-utilized crops. When will 95% of our food come from two or three of them? Perhaps a maize-arabidobsis hybrid, a cassava wunderroot, and super-rice? Shouldn’t we rather buck that trend and diversify agriculture? That message comes from several corners, like this one: “a food system that is good for us, our communities and the planet is small-scale, diversified agriculture.”

I checked 1 the FAO statistics to see how bad things are going. How quickly are we un-diversifying agriculture? If you consider the fraction of crop land planted to different crops, it appears that — at the global scale — the opposite of what I expected is happening. Between 1961 and 2007, maize and soybean area went up, but that was countered by the decline in the area planted with wheat and barley. 2 It is a story of both winners and losers, and — overall — an increase in diversity.

Global crop diversity, expressed as the relative amount of land planted to different crops, did not change much between 1961 and 1980, but is has increased since. Between 1980 and 2007, the Shannon index of diversity went up from 3.14 to 3.34.

Do tell me why I am wrong. Is it a matter of scale? Global level diversification of crops while these crops are increasingly geographically concentrated? Could be. Is the diversity index too sensitive to the relative decline in wheat? Perhaps. Or are we really in a phase of (re-) diversification, at least in terms of the relative amount of land planted to different crop species? 3 I cannot dismiss that possibility. For example, I have heard several people speak about on-going diversification (away from rice) in India and China. Has anyone looked at this, and related global consumption patterns, in detail?