
Although it has been posted for several weeks now, we recently ran across
an article in The Globe and Mail, discussing climate change and global food supply. One of the things that was most interesting about this article is that they provided a sampling from the CGIAR (the food-security arm of the Consultative Group on International Agricultural Research) wish list, that states what we can start doing now to slow down or prevent further obstacles to feeding world populations.
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Here is their wish list:
Water
In developing countries, 70 per cent to 90 per cent of total water use is devoted to agriculture. Technologies such as water harvesting, better storage, use of wastewater and drip irrigation must be more widely employed, particularly in the southern-hemisphere countries where temperature increases will have the most dramatic effects.
Crops
With less water, higher temperatures and more people, farmers will need to grow more with less. Stress-tolerant varieties of staple crops such as maize, potato and rice are already available, and more advanced varieties are on the way, including drought-tolerant beans and flood-tolerant rice. The key is getting more of the new, high-powered seeds into fields everywhere, including poor and hungry countries.
Soils
Teaching farmers in vulnerable countries how to increase the organic nutrient content in soil is also critical to the success of the new-age, hardier crops, and for realizing the potential for plants to hold carbon. Key options are advocating "conservation agriculture," in which soil is minimally disturbed, and "eco-farming," which promotes planting of several crop varieties to achieve ecological balance in the field.
Pests and diseases
Balmier year-round temperatures are expected to breed new pests and give familiar seasonal bugs lengthier lives. Computer models to predict the impact of temperature increases on pests will add a degree of predictability to where and when outbreaks are likely to happen, so strategies such as breeding disease-resistant crops can be implemented in advance.
Livestock
Raising livestock - from producing feed to end-stage processing - already accounts for about 18 per cent of global greenhouse gas emissions. Demand for meat and milk protein is on an upswing in developing countries in spite of the ever-looming climate crunch. Breeding more efficient and less-methane-producing animals can lessen the public health toll.
Fish
As climate change puts pressure on other food sources, people are expected to eat more fish. But an over-reliance on aquaculture also poses dangers. Pilot projects are investigating ways to mitigate the risks of over-fishing, develop salt-tolerant fish varieties (to increase supply) and help farmers diversify by adding fish farms, which can help water and feed livestock.
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Their wish list really is comprised of things that we can start doing now. These are in no means an answer to all of our problems, but they are certainly a step in the right direction.