SPINY AMARANTH (AMARANTHUS-SPINOSUS L) CONTROL IN PEANUT (ARACHIS-HYPOGAEA L)

Eight POST herbicides were evaluated alone or in various mixtures for spiny amaranth control in peanut in 1991 and 1992. Acifluorfen alone o r in combination with bentazon, lactofen alone, or 2,4-DB alone applie d late POST controlled spiny amaranth more than 80% at an early season rating. Lactofen applied early POST and 2,4-DB applied late POST cont rolled more than 90% late season. Imazethapyr and AC 263,222 controlle d 72 to 90% of spiny amaranth, whereas bentazon and pyridate failed to provide adequate control.