Table 1: Control of E. crus-galli populations at 21 d after treatment with various ALS herbicides at recommended field ratesa,b,c.

Control
TreatmentRateSusceptibleAR1AR2 MS1
g ai ha−1%

Imazethapyr70100aA57cA6dC83bA
Imazamox35100aA59cA6dC86bA
Penoxsulam3599aAB26cB51bB22cB
Bispyribac-sodium3098aB15bC98aA16bC

aMeans for each population within a column followed by the same uppercase letters and means for each herbicide within a row followed by the same lowercase letters are not significantly different according to Fisher’s protected LSD test ( ).
bAll herbicide treatments except bispyribac-sodium contained nonionic surfactant at 0.25% v/v.
cBispyribac-sodium treatments contained a nonionic spray adjuvant and deposition aid at 2.5% v/v.