Little honeydew was excreted by brown planthoppers on rice plants treated with Etofenprox compared with planthoppers on untreated rice plants. The sucking deterrent effect of Etofenprox continued for more than 3 weeks after the disappearance of any insecticidal activity.
Larval instars and adult sexes of Chlorops oryzae are distinguished by the characters of the posterior spiracles and external genitalia, respectively. These differences are easily visible under a binocular microscope at low magnification (15×).
A plaque-purified Bombyx mori nuclear polyhedrosis virus, BmNPV D1 isolate, was propagated for 30 generations by serial undiluted passages in BmN4 cells. During the passages, a few polyhedra phenotypes and defective viral genomes were generated. By contrast, the population of wild type polyhedra and genomes decreased. The main component of defective genomes contained most of the interspersed homologous sequences of the baculovirus genomes.