Figure 7

Landsat images depicting crop field conditions at or near the time of pesticide applications to a cotton field (B, outlined in red). Dates of images from left to right are April 6, July 3, and October 15, 2000. Purple tones indicate bare soil and green tones indicate green vegetation. Crop fields were labeled in the CDWR map as A) cantaloupe, B) cotton, C) grain (wheat), D) cotton, E) tomato. Black lines in the image are the CDWR land use boundaries and yellow lines are Section boundaries. Bottom graph shows NDVI time-series plots for the crops. NDVI values were interpolated for missing time periods for visual clarity. The Landsat image dates depicted in the three images at top are shown as black vertical lines on the graph.