Wj. Grichar et Pr. Nester, NUTSEDGE (CYPERUS SPP) CONTROL IN PEANUT (ARACHIS-HYPOGAEA) WITH AC263,222 AND IMAZETHAPYR, Weed technology, 11(4), 1997, pp. 714-719
Experiments were conducted from 1991 through 1993 to evaluate AC 263,2
22 and imazethapyr for yellow and purple nutsedge control in peanut. A
C 263,222 at 0.05 to 0.07 kg/ha controlled purple nut sedge (88 to 99%
late season) whether applied preplant incorporated (PPI), preemergenc
e (PRE), early postemergence (EPOST) al peanut emergence, or pastemerg
ence (POST), Yellow nutsedge control with AC 263,222 was inconsistent
at the 0.04 kg/ha rate; however, the 0.05 and 0.07 rate gave 88% early
season yellow nutsedge control, but late season control was variable.
Yellow nutsedge control with soil-applied treatments of AC 263,222 an
d imazethapyr were similar but AC 263,222 provided better postemergenc
e control than did imazethapyr. Purple nutsedge control was similar fo
r both herbicides across all application methods.