Evaluation of Pre-Emergence and Post-Emergence Herbicides for Weed Management in Miscanthus sacchariflorus and Miscanthus sinensis

Miscanthus, is a promising bioenergy crop, considered superior to other crops because of its higher water and nutrient use efficiency, cold tolerance, production biomass. Broadleaf weeds grass weeds, cause major problems in the Miscanthus field. A field experiment was conducted 2018 2019, assess effects pre-emergence (alachlor napropamide) post-emergence herbicides (nicosulfuron, dicamba, bentazon, glufosinate ammonium) on broadleaf M. sinensis sacchariflorus fields. The weed control efficiency phytotoxicity pre- were evaluated at 30 days after treatment (DAT) compared those plots. results showed wide variations susceptibility species treated herbicides. Treatment with nicosulfuron 40 g.a.i.ha−1 provided most effective overall (with 10% visual injury), without affecting height biomass neither Post-emergence such as ammonium 400 dicamba 482 inhibited growth density majority 100%; however, they significant (toxicity scale 1–10) both Miscanthus. application caused severe injuries foliar region (90% injury) sps. Comparatively, slightly tolerance nicosulfuron, bentazon napropamide injury recommended dose than sacchariflorus. present study clearly that infestation fields can damage applying effectively controls high these weeds.