*5.3.4 Weeding*

Pre-emergence herbicide can be used to control weeds in turmeric farm. Weed control is normally done within 4–6 weeks after planting depending on rate of weed emergence. According to [80], under Umudike condition, critical time of weed interference is between 8 and 12 weeks after planting. Yield loss in turmeric due to weed competition can range between 3 and 55%.
