However, weeds that emerge later may also decrease the yield and produce seeds to add up to the
weed seed bank , thereby increasing the weed infestation every year. This necessitates two post-emergence herbicide applications and hand weeding at 40-45 DAS after the application of herbicides at 25-30 DAS. Such systems would provide weed control for longer critical periods, resulting in the closure of the crop canopy, which would suppress weeds emerging at later stages.