Written by Steve Savage
The pesticides that farmers use to protect their crops have changed a great deal over the last few decades. While improvement is something we expect from technologies as diverse as pharmaceuticals, electronics or plant breeding, few people are aware of the positive developments in the chemicals used for crop protection. I find that many plant molecular biologists and other defenders of biotechnology have a similarly out-dated view of pesticides.
Dramatic change began with the establishment of the EPA in 1970 which led to the elimination of many problematic, old pesticides. Also, there has been a steady stream of new product introductions with both safety and efficacy advantages.
To document how pesticides have changed, I decided to download historical information for one of my favorite crops – premium wine grapes. California has had mandatory pesticide use-reporting in place since 1990. The resulting data can provide a window on at least 22 years of this evolution. I chose 5 counties that would represent much of the premium acreage in both the North Coast (Napa, Sonoma, Mendocino – 121,700 acres in 2011) and the Central Coast (Monterey, Santa Barbara – 62,288 acres in 2011). Continue reading “An Example of How Much Pesticides Have Changed”