14C-Glyphosate absorption and translocation in glyphosate-susceptible and -resistant plants of goosegrass (Eleusine indica) biotypes collected in citrus groves in Veracruz, Mexico. (a) 14C-glyphosate absorption in goosegrass plants from 12 to 96 HAT. (b) 14C-glyphosate translocation in goosegrass plants at 96 HAT. Different letters are significantly different at 95% probability determined by Tukey’s test. The vertical bars represent the standard error of the mean (n = 5).