Table 1: Absorption of 14C-glyphosate as affected by Palmer amaranth biotype and glyphosate overspraya.

Harvest timeBiotypebGlyphosate oversprayc
ResistantSusceptibleNot oversprayedOversprayed

%
6 18c30ab22d25cd
1235a30ab36ab29bcd
2432ab25bc26cd31abc
4832ab31ab26cd36ab
7232ab33ab25cd40a

Absorption expressed as percentage of total 14C recovered. Means within the effect of biotype or glyphosate overspray followed by the same letter are not different according to Fisher’s Protected LSD at .
bData pooled over glyphosate overspray options.
cData pooled over glyphosate-resistant and glyphosate-susceptible biotypes. Glyphosate applied at 840 g/ha.