ABSORPTION, TRANSLOCATION, AND METABOLISM OF FLURTAMONE IN SICKLEPOD (CASSIA-OBTUSIFOLIA) AND PEANUT (ARACHIS-HYPOGAEA)

The basis of peanut tolerance to the bleaching herbicide flurtamone was examined. The absorption, translocation, and metabolism of C-14-flurtamone were examined in peanut at 6, 24, and 48 h after root application. Differences in C-14-flurtamone uptake over time were not detected. Approximately 40% of the absorbed C-14-flurtamone was in the leaves at 6 h after treatment; 60% was metabolized to polar products 41% of absorbed C-14 in 6 h; 40% of this moved from roots to shoots; and 60% of this did not co-chromatograph with the parent; 9.8% of applied C-14-flurtamone was altered in leaf tissue. The levels of metabolized flurtamone increased with time after treatment (75% and 83% of applied C-14-flurtamone metabolized at 24 and 48 h, respectively). Parent C-14-flurtamone was detectable with R(t) of 7 min and unknown metabolites with an R(t) of 3.3, 4.4, and 5.6 min, respectively, was detected in leaf tissue at 6, 24, and 48 h after treatment.