This image illustrates the locations of water-sensitive
paper within the potato canopy relative to sprayer direction of travel. Papers
were located in four positions within the canopy, on two plants per nozzle. In
the upper canopy, one paper was clipped face-up and another clipped face-down.
In the lower canopy (that it, two-thirds down from the top), one paper was clipped
face-up, and the other face-down.
to Spray coverage in potato