 Image Number D807-2 |
Plant physiologist John Teasdale records data on weeds growing in a ripening organic wheat field next to a recently cultivated plot of organic corn.
Photo by Charles Phillips.
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.