Fig. 2. High performance liquid chromatography (HPLC) chromatograms for metribuzin and metamitron showing abiotic controls and degradation by Absidia fusca and Botrytis cinerea. (A) metribuzin 1, retention time (RT): 2.99 min; (a) standard (100 mg/L), 1 = 100%; (b) abiotic control, 1 = 98%; (c) Absidia fusca NCS, 1 = 77%, main other peaks RT (min): 0.74–1.39–1.75–2.07–2.36; (d) Absidia fusca CS, 1 = 8%, main other peaks RT (min): 1.40–1.91–2.37; (e) Botrytis cinerea NCS, 1 = 35%, main other peaks RT (min): 1.44–1.62–2.09–2.39; (f) Botrytis cinerea CS, 1 = 75%, main other peaks RT (min): 1.45–1.75–2.10–2.39. (B) metamitron 2, RT: 2.46 min; (a) standard (100 mg/L), 2 = 100%; (b) abiotic control, 2 = 98%; (c) Absidia fusca NCS, 2 = 92%, main other peaks RT (min): 1.38–1.75–1.96; (d) Absidia fusca CS, 2 = 84%, main other peaks RT (min): 1.37–1.71–2.1. NCS, noncontaminated soil; CS, contaminated soil. Major peaks are underlined, secondary peaks are in italic type