Chemical weed control in rice bean

The experiment on weed control in rice bean was conducted for three years (2012-2014) using pre- and post-emergent weedicides along with manual weed control methods at Bengaluru. The pooled analysis revealed that the weed free control treatment recorded lower weed count, weed dry matter with higher weed control efficiency (95.31%) and seed yield (1423 kg ha^-1) over the rest of the treatments. The weed free control treatment recorded B:C ratio of 2.43, whereas the higher B:C ratio of 2.62 was recorded in the application of pendimethaline 38.7% CS1 kg a.i. ha^-1 as pre-emergence + hand weeding at the 5^th week after sowing (WAS) followed by application of oxyflurofen 23.5 EC 50 g a.i. ha^-1 as pre-emergence + hand weeding at 5 WAS (2.61).