D Timsina - Agriculture and Forestry University, Rampur, Chitwan, Nepal
Abhisek shrestha - post- graduate student from Tribhuvan University and worked as technical officer at NARC
Bharti Thapa - Institute of Agriculture and Animal science, Lamjung, Nepal

A field experiment was conducted in pre-monsoon season during ۲۰۱۷ and ۲۰۱۸ at National oil seed research program, Nawalpur, Sarlahi, Nepal, to study the impact of weed management practices in groundnut production. Pendimethalin as pre-emergence, while Metribuzin, Propaquizafop at ۱۰۰ g per hectare, Quizalofop ethyl at ۱۰۰ g per hectare, as post emergence was used along with integration with hand weeding and intercultural operation. The result revealed that supplement of the hand weeding after the application of the pre-emergence herbicides pendimethalin was found effective in  reducing  the weed severity and improves the growth and yield attributes and ultimately yielded ۲۱۰۱ kg ha‑۱. This treatment also recorded the highest gross and net return (NRs ۱۶۸۰۸۰ and ۴۸۴۷۰) and benefit cost ratio (۱.۴) thus, this integrated weed management practice could become effective and economic under southern belt terai agro climatic condition of Nepal.

Hand weeding, Pendimethalin, Pre emergence, Weeds