Fig. 4. Laccase activity for the New Zealand white-rot fungal isolates Trametes versicolor HR131 and Trametes spp. HR577 after bioaugmentation into various clay loam–pentachlorophenol (PCP)-contaminated soil mixtures. Pooled 95% error bounds for the factor means (U kg^–1): PCP concentration and isolate main effects ± 203, and ± 128, respectively, time and PCP concentration effect ± 296.