Fig. 1.

Mortality of the second nymphal instar of Trialeurodes vaporariorum after exposition to six concentrations of the EPN species Steinernema feltiae and Heterorhabditis bacteriophora on cucumber and pepper plants. Columns are average of the mortality of second nymphal instar and bars standard error (±SEM) of the mean. Different letters indicate significant difference among combination treatments (nematode species × nematode concentration × host plant type) based on LSD test (P ≤ 0.05). LSD, least significant difference.