Page Banner

United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

Download a high-resolution (300dpi) digital image

Image Number K8050-1

Chemist Richard Mayer analyzes chlorophyll fluorescence in Valencia oranges as a measure of the tree's stress.

Photo by Keith Weller.



640 pixels wide: (k8050-1.jpg)




Please visit our Image Gallery
Last Modified: 5/23/2006
Footer Content Back to Top of Page