Weed competition will reduce rice yield. The research aimed to study the effect of difference weed control methods on rice yield in
SOBARI. It has been conducted from October 2013 until February 2014, using Randomized Block design with five treatments (A =
manual weeding, B = unweed control, C = herbicide containing Penoxulam + Cyhalofop-butyl, D = Bispyribac sodium, and E = 2, 4
D + Methyl metsulfuron). The results showed that weed control using herbicides containing Bispyribac sodium and 2.4 D + Methyl
metsulfuron showed similar results as manual weed control on rice yield.