INVENTARISASI GULMA PADA LAHAN PERKEBUNAN TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) DI KECAMATAN TAMBUSAI UTARA KABUPATEN ROKAN HULU

Abstract

Palm oil plants also easilyaffected by weeds, especially when youngor when Immature (TBM). Presence  of  weedsare  leftto  growon crops will decrease 20-80% yields. Weed community  structureneeds  to  be  known before the  implementation  of weed  control because not all weed species detrimental to the plant. This research aims to inventory anddetermine the composition ofthe types of weeds that existin oil palm plantation crops in the  district of  North Tambusai Rokan Hulu. The  method  used in this research is  the method of  laying Squares with purposive sampling lot by plot  size1x1mon palm  treesimmature. The results showed that the type of weed that has important value index(INP) is the  highest Borrerialatifolia (kentangan) Rubiaceae  family with INP=3.39%. Weeds andvegetationin the district north Tambusai in dicates that there are 4 types of weeds that dominatesie Borrerialatifolia, Ageratumconycoides, Asystasiagangetica, andAxonopuscompressus. However Of  the 10 villages  located  in  the District  of North Tambusai weeds Ageratumconycoides most commonly found.