The available herbicides for weed control in rice are of 
overseas origin. The country depends on multinational companies for 
supply of the herbicides, but usually the companies do not supply the 
same brand of herbicides for long time. Thus, continuous evaluation of 
the available herbicides in rice is necessary for the benefit of the 
farmers of this country. Therefore the objective of this study was to 
examine the performance of different pre emergence herbicides in 
comparison with manual weeding and a standard herbicide for the 
control of weeds in boro/winter rice