Field populations
Field populations of N. lugens collected from different
rice growing areas of Karnataka, India viz. Gangavati,
Kathalagere, Kollegala, Soraba and Mandya were used
to study the susceptibility to different insecticides.
Insects were collected as nymphs and adults during
rice growing seasons. The insects were reared to F
generation in the laboratory on rice seedlings.
Insecticides
The commercial formulations of the insecticides used
in the bioassay studies belonging to different groups
are listed in Table 1.