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.
Study area at the Sierra Foothills Research Extension Center, Browns Valley, CA, United States. The main image shows a near-infrared, red and green band composite for the classified portion of the site. The photo inset shows an example of infested areas as seen on the ground, with medusahead and other green vegetation patches amidst senescent grasses.
