Weed species investigation and chemical control of Arachis duranensis lawn in edge of tropical

Weeds species and biomass were investigated and controlled by spraying three herbicides at Arachis duranensis lawn in edge of tropical region.The results showed that there were 35 weed species,which belonged to 20 families,and most of species belonged to Gramineae,Compositae,Rubiaceae,Polygonaceae,Amaranthaceae.Kyllinga cororata,Digitaria sanguinalis,Alternanthera philoxeroides and Oxalis corymbosa,showed highly frequency.Weeds biomass took up 11.20% of the total biomass while average coverage was 6.25%.The treatment of spraying plus daubbing herbicide was effective way to control weeds.The brand of Whip super was the best herbicides for weed control,followed by quizalofop-p-ethyl.