Weedy rice, an emerging problem in Asia, increases production costs and reduces farmers'
income through yield reduction and through lowered rice value at harvest. Rice farmers in
many Asian countries are shifting from transplanting to direct seeding; however, due to
physical and physiological similarities of weedy rice to cultivated rice and the absence of
standing water at the time of crop emergence, adoption of direct-seeded rice systems makes
weedy rice infestation one of the most serious problems. Selective herbicides to control …