Road-side market in rural Tanzania

Thursday 13 June 2013

Opening the Gates to GMOs - is the Biofortification of Staple Food Crops a Trojan Horse?

Bill Gates has praised the British Government for ‘leading the way’ by giving £655 million to tackle child hunger. £43 million of this will be given to the CGIAR in order to biofortify the staple food crops that are said to predominate the diets of the rural poor.  HarvestPlus will receive the bulk of these funds, in order to use ‘the best traditional breeding practices and modern biotechnology’ to develop new varieties of common bean, cassava, maize, rice, sweet potato and wheat that are higher in essential nutrients, especially vitamin A (β-carotene), iron and zinc. It is estimated that costs associated with breeding each new variety will average about $400,000 per year over a 10-y period, globally.

Is our money being well spent?

Orange-flesh, sweet potato lines, that contain over 20, 000 μg of β-carotene per 100 g of edible portion, have already been identified by HarvestPlus scientists.  Their GM ‘Golden Rice’ contains 3, 100 μg of β-carotene per 100 g.  Either of these food crops can protect adults and children from night blindness if they form part of a regular diet.  ‘Ongoing transgenic research is exploring the use of an endosperm-specific promoter to deposit iron within the endosperm of rice so that it is not milled away’.  Pregnant women need to consume at least 28 mg of iron per day to prevent anaemia.

Although higher zinc-retaining crop cultivars are also being developed, such crops will be unable to take advantage of this trait if they are growing in zinc-deficient soils.  Fortunately, zinc is cheap and easy to apply as a seed dressing.

According to HarvestPlus scientists, ‘to work, the biofortification strategy requires widespread adoption by farmers’  So another essential part of their work is to promote ‘behaviour change’ on the part of subsistence farming families in order to create demand for these new, biofortified seeds and planting materials. This means developing additional seed multiplication and delivery systems, leading to ‘new market opportunities for seed processors and retailers’.  

Enter Bill Gates and his Monsanto-supported Alliance for a Green Revolution in Africa (AGRA) that is spearheading a multi-billion dollar effort to transform Africa into a GMO-friendly continent...

This approach to reducing malnutrition among the rural poor is seriously flawed:
  • Subsistence farmers depend on their own saved seed, if they are obliged to buy new seed and the associated inputs, they will be forced to sell part or all of their harvest in order to cover costs.
  • It assumes that poor people will eat a narrow diet, based on a single food staple.
  • It encourages a ‘Green Revolution’ approach, i.e. monoculture + high input technologies, rather than promoting crop diversity, carbon sequestration and de-linking farming from fossil fuels.

There is a much cheaper alternative that only requires educating women in nutrition and facilitating local seed exchange!

Pigeon pea - drought-tolerant crop, high in iron and protein

Many subsistence farmers are already cultivating a wide range of nutritious food crops that can be harvested year-round, using a method known as ‘permaculture’.  This is an agroecological farming system (preferred by the  UN Special Rapporteur on the Right to Food) that emphasises the use of perennial crops. This includes fruit trees and vegetable gardens around homesteads and field-grown grain crops, intercropped with pumpkins and legumes.  Such diversity assists pest management and ensures a sustainable supply of nutritious food.  For example, mangos, amaranth leaves, pumpkin and papaya all contain high levels of β-carotene.  Similarly, amaranth leaves, bulrush millet, pigeon peas and sesame seeds contain high levels of iron - 200g of pigeon peas per day would provide sufficient iron to satisfy the needs of a pregnant woman, see Table below:

Nutrient content of unimproved, indigenous food crops
Essential nutrient
Recommended adult daily intake
Crop/source
Content per 100g of edible portion
β-carotene
750-1,000 µg
Amaranth leaves
5, 176 µg
Mango
3, 200 µg
Papaya
950 µg
Pumpkin flesh
3, 100 µg
Iron
9-28 mg
Amaranth leaves
8.9 mg
Bulrush millet
20.7 mg
Pigeon pea
15 mg
Pumpkin seeds
8.8 mg
Sesame seeds
8.1 mg
Zinc
15-20 mg
Pumpkin seeds
10.3 mg

These indigenous food crops are also high in other essential nutrients, such as Vitamin C, B Vitamins (Thiamine, Riboflavin and Niacin) and protein. 

So why do we need to spend so much money on biofortification? 


It seems that our taxes are being used to support the multi-billion dollar, biotech industry in its efforts to get the rural poor hooked on GM crops, under the guise of reducing child malnutrition.