Chemical Weed Control in Spring Groundnut (Arachis hypogaea L.)

A field experiment was conducted during spring season of 1993 and 1994 on a silty clay loam soil to studythe effect of chemical weed control on weed growth, yield andyield attributes of groundnut (Arachis hypogaea L.). Pre-emergence application of alaehlor 3.0 kg/ha and halloxyfop methyl 0.75 kg/ha was comparable with two hand weedings plus hoeing in reducing weed density and its dry weight as well as in increasing number of pods/plant. Two hand weeding plus hoeing gave maximum pod yield (2472 kg/ha in 1993 and 2619 kg/ha in 1994) followed by halloxyfop methyl 0.75 kg/ha in 1993 and alachlor 3.0 kg/ha in 1994. Among the herbicidal treatments, application of alachlor 3.0 kg/ha, being at par with pendimethalin 1.5 kg/ha, halloxyfop methyl 0.75 kg/ha and fluchloralin 1.25 kg/ha.