The experiment was begun on May 3, 2007. The collapsible
nylon cloth cages were 80 cm in length and 30 cm in width (Figure
2). Each cage contained 40 wheat plants. Newly emerged 24 and
48 first instars were transferred into each cage along with the control
having no individuals as four replications (Figure 1). The
number of insects and the instars feeding were observed at the
time spectral measurements were made by spectroradiometer