Plant residues are important in the integrated disease management against fusarium head blight (FHB). This study was performed to predict the in situ effects of Atlantis® OD 42 herbicide on the interaction between a biological control fungus (Trichoderma asperelloides Samuels T-92) and the mycotoxigenic pathogen (Fusarium graminearum Schwabe) by in vitro confrontation test. Collectively, Atlantis® OD 42 was found positively effective in pathogen control. Here, the modified confrontation test was applied with new parameters to analyze the detailed effect of Atlantis® OD 42) on the fungus-fungus interactions. The study revealed the negative effect of Atlantis® OD 42 on the pathogen growth and gave a clue to its negative impact on mycotoxin efflux (an important determinant of the pathogen virulence). The effect of herbicide on the biological control of the pathogen was discussed. This is the first introduction of the quantitative confrontation test after its modification.
Biocontrol; Mycotoxin; Sulfonylureas; Toxin; Virulence
Pakdaman Sardrood B., Elahifard, E. (2025): Quantitative Confrontation Test: Effect of Atlantis® OD 42 on Trichoderma asperelloides and Fusarium graminearum Interactions . Scientia Agriculturae Bohemica, 56, 3,10, DOI: 10.7160/sab.2025.560310