Each experiment was replicated six times for each
volatile at each concentration.To
equalize these differences we included an untreated
control plot in each experimental series using material
from a single plant.After 24 h thrips were removed from
the leaf discs.The number of dead, i.e. not moving when
picked up with a fine brush, and live individuals were
determined indicating adult survival.The percentage of
silver damage area on the leaf discs was measured with
an image analysis system that consisted of a binocular