highly significantp < 0.001
Laboratory In Vitro Bioassay of Trichoderma Antagonism Dual-culture assays revealed a highly significant effect of Trichoderma isolates on mycelial growth inhibition of Macrophomina ( p < 0.001), with a strong and highly significant interaction between Trichoderma isolates and Macrophomina strains ( p < 0.001; two-way ANOVA) based on percentage growth inhibition ( Figure 3 ).