Does GM technology reduce pesticide use?
GM does not reduce pesticide use. In countries where GM crops are commercially grown, GM plants that appear after harvest (known as volunteers, and a nuisance to farmers) with built in resistance to herbicides have spread quickly. This has lead to Canadian and American farmers spraying more herbicides - sometimes reverting to older more toxic chemicals.
Despite claims by biotechnology companies who develop GM crops, they do not in-fact lower the use of herbicides, but increase them - it is in their interests after all, because the biotech companies also happen to produce agro-chemicals.