Planet Earth

Discover Data: The Other Resistance Problem

By Elizabeth SvobodaSep 1, 2003 5:00 AM

Newsletter

Sign up for our email newsletter for the latest science news
 

Since genetic engineers devised herbicide-resistant crops in the mid-1990s, weed killers such as Roundup have become the wonder drugs of the farming industry, clearing out pest plants while leaving corn and soybeans intact. But weeds are developing resistance as well. Weed specialist Ian Heap and his colleagues at the International Survey for Herbicide Resistant Weeds in Corvallis, Oregon, have found that more than 50 species of herbicide-tolerant weeds have popped up just since 1995—a trend fueled by the 2 billion pounds of herbicide farmers dump on their crops every year. "We're very concerned, because so many soy and corn farmers rely solely on Roundup for weed control," he says. He is urging farmers to use different herbicides each year and to invest in old-fashioned methods of weed control, such as tilling the soil.

Graphic data courtesy of weedscience.com.

1 free article left
Want More? Get unlimited access for as low as $1.99/month
Already a subscriber? Log In or Register
1 free articleSubscribe
Want unlimited access?

Subscribe today and save 70%

Subscribe

Already a subscriber? Log In or Register
More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2021 Kalmbach Media Co.