Wednesday, April 14, 2010

GM Foods and Resilience Thinking

The National Academies of Science just released their first systematic assessment of genetically modified crops Impact of Genetically Engineered Crops on Farm Sustainability in the United States. Here is a brief description of the report:

Since genetically engineered (GE) crops were introduced in 1996, their use in the United States has grown rapidly, accounting for 80-90 percent of soybean, corn, and cotton acreage in 2009. To date, crops with traits that provide resistance to some herbicides and to specific insect pests have benefited adopting farmers by reducing crop losses to insect damage, by increasing flexibility in time management, and by facilitating the use of more environmentally friendly pesticides and tillage practices. However, excessive reliance on a single technology combined with a lack of diverse farming practices could undermine the economic and environmental gains from these GE crops. Other challenges could hinder the application of the technology to a broader spectrum of crops and uses.

Several reports from the National Research Council have addressed the effects of GE crops on the environment and on human health. However, The Impact of Genetically Engineered Crops on Farm Sustainability in the United States is the first comprehensive assessment of the environmental, economic, and social impacts of the GE-crop revolution on U.S. farms. It addresses how GE crops have affected U.S. farmers, both adopters and nonadopters of the technology, their incomes, agronomic practices, production decisions, environmental resources, and personal well-being. The book offers several new findings and four recommendations that could be useful to farmers, industry, science organizations, policy makers, and others in government agencies.

It is interesting that a report which is generally supportive of the productivity gains that GM crops have provided is highly critical of those same crops from an ecological sociology perspective. Specifically, there is a concern with a) the tendency toward homogeneity (i.e., monocrops) and the resulting lack of resilience in the agricultural ecosystems and b) the emergence of glyphosate resistant diseases due to the wide spread use of Round-up (a glyphosate based herbicide) in combination with Monsanto's Round-up ready GM seeds. The latter development leads farmers to use additional, even more toxic chemicals, to kill off the unwanted weeds.

1 comment:

  1. If you have question about, what are genetically modified foods are, Genetically modified (GM) foods are foods derived from organisms whose genetic material (DNA) has been modified in a way that does not occur naturally, e.g. through the introduction of a gene from a different organism. Currently available GM foods stem mostly from plants, but in the future foods derived from GM microorganisms or GM animals are likely to be introduced on the market. So if you don't get clear concept about it then go to what are genetically modified foods are for more....