To confirm that antagonistic activity was not P. ramorum-isolate
specific, five isolates of T. asperellum (02-64, 06-283, 06-287, 02-65,
and 04-22) and one isolate of T. virens (G2) were selected to
repeat the test described above on two additional P. ramorum
isolates (5-C and PRN-1). This test was conducted two times for
each Trichoderma isolate against each P. ramorum isolate.