Fig. 1.

Effects of augmenting the entomopathogenic nematode community beneath citrus trees with Steinernema riobrave (Sr) on the mortality of Diaprepes abbreviatus sentinel larvae (A) and the prevalence of insect cadavers containing entomopathogenic nematodes (EPN) (B), free-living, bactivorous nematodes (FLBN) (C) and S. riobrave (D). A composted animal manure mulch was applied to half of the plots in each treatment, and the remaining plots remained bare. Treatment differences according to two-way analysis of variance of transformed data (arcsin, square-root) are denoted by @(P ≤ 0.10), *(P ≤ 0.05) or **(P ≤ 0.01). Error bars are standard errors of means. Dotted lines indicate S. riobrave application dates.