A recent issue of the ecologist has two articles:
10 reasons why organic can feed the world
9. Seed-saving
Seeds are not simply a source of food; they are living testimony to more than 10,000 years of agricultural domestication. Tragically, however, they are a resource that has suffered unprecedented neglect. The UN FAO estimates that 75 per cent of the genetic diversity of agricultural crops has been lost over the past 100 years.36
Traditionally, farming communities have saved seeds year-on-year, both in order to save costs and to trade with their neighbours. As a result, seed varieties evolved in response to local climatic and seasonal conditions, leading to a wide variety of fruiting times, seed size, appearance and flavour. More importantly, this meant a constant updating process for the seed’s genetic resistance to changing climatic conditions, new pests and diseases.
By contrast, modern intensive agriculture depends on relatively few crops – only about 150 species are cultivated on any significant scale worldwide. This is the inheritance of the Green Revolution, which in the late 1950s perfected varieties Filial 1, or F1 seed technology, which produced hybrid seeds with specifically desirable genetic qualities.37 These new high-yield seeds were widely adopted, but because the genetic makeup of hybrid F1 seeds becomes diluted following the first harvest, the manufacturers ensured that farmers return for more seed year on year.
With its emphasis on diversity, organic farming is somewhat cushioned from exploitation on this scale, but even Syngenta, the world’s third-largest biotech company, now offers organic seed lines. Although seedsaving is not a prerequisite for organic production, the holistic nature of organics lends itself well to conserving seed.
In support of this, the Heritage Seed Library, in Warwickshire, is a collection of more than 800 open-pollinated organic varieties, which have been carefully preserved by gardeners across the country. Although their seeds are not yet commercially available, the Library is at the forefront of addressing the alarming erosion of our agricultural diversity.
Seed-saving and the development of local varieties must become a key component of organic farming, giving crops the potential to evolve in response to what could be rapidly changing climatic conditions. This will help agriculture keeps pace with climate change in the field, rather than in the laboratory.
10 reasons why GM won’t feed the world
10. Wedded to fertilisers and fossil fuels
No genetically modified crop has yet eliminated the need for chemical fertilisers in order to achieve expected yields. Although the industry has made much of the possibility of splicing nitrogen-fixing genes into commercial food crops in order to boost yields, there has so far been little success. This means that GM crops are just as dependent on fossil fuels to make fertilisers as conventional agriculture. In addition to this, GM traits are often specifically designed to fit with large-scale industrial agriculture. Herbicide resistance is of no real benefit unless your farm is too vast to weed mechanically, and it presumes that the farmers already farm in a way that involves the chemical spraying of their crops. Similarly, BT toxin expression is designed to counteract the problem of pest control in vast monocultures, which encourage infestations. In a world that will soon have to change its view of farming – facing as it does the twin challenges of climate change and peak oil – GM crops will soon come to look like a relic of bygone practices.
Great articles, even if their titles imply that this planet can sustain 6 billion plus humans!
