To determine the efficacy of various antibiotics towards inhibiting Fusarium spp. NK-NH1 and NK-NH2 growth, we assayed growth in the presence of five kinds of biocides on PDA media. Agents containing isothiazolinones, such as Preventol® D7, BIT 20N, P91, and Euxyl® K100, suppressed the growth of Fusarium spp. NK-NH1 and NK-NH2 at a 0.1% concentration (v/v), as indicated by inhibition rings. However, Borate buffer solution (BBS) at a 1% concentration (w/v) did not suppress the growth of either strain (Fig. 5). Of the two strains, Fusarium sp. NK-NH1 was more sensitive to isothiazolinones.Figure 5Photograph showing the inhibition of fungal growth by biocides. (a) The disks on each PDA plate were loaded with the same concentration of different biocides. Clearing zones indicate where the growth of Fusarium spp. NK-NH1 and NH2 was inhibited. (b) The inhibition efficiency of different biocides. The ordinate is the diameter of antibiotic inhibition zone. Vertical lines indicate standard deviations of three replicate tests for each.