A field experiment was conducted at Instructional Farm, College of Agriculture, Swami Keshwanand Rajasthan Agricultural University, Bikaner (Rajasthan) during Rabi 2021-22 and 2022-23. The research was conducted to find out effect on weed control parameters using treatments like chemical herbicides with alone/ combinations. The crop was infested by weeds right from sowing and many weed flushes were observed during the study. The experiment consisted of total fourteen treatments combinations (H1 - Weedy check, H2 - Weed free, H3–Pendimethalin, H4– Oxyfluorfen, H5– Imazethapyr, H6 - Diclosulam @20g/ha PE, H7 - Diclosulam @25g/ha PE, H8 - Flumioxazin @75 g/ha, H9–Flumioxazin @100 g/ha, H10 - Pendimethalin + Imazethapyr, H11 - Pendimethalin + Oxyfluorfen, H12 - Imazethapyr + Imazamox (RM), H13 - Sodium Acifluorfen + Clodinafop-Propargyl 8% (RM), H14–Fomesafen 11.1% + Fluazifop–p-butyl 11.1 % (RM)). These treatments were evaluated in Completely Randomized Block Design with three replications. In weedy check plots, fenugreek was mainly infested with mixed flora of broad-leaved weeds chiefly consisted of Rumex dentatus, Chenopodium murale L., Melilotus indica L. and Chenopodium album. The results indicate that at each stage of observation pre emergence application of pendimethalin + imazethapyr (RM) was found significantly superior in reducing total weed density, dry matter and their bio mass compared to weedy check and remains statistically at par with application of Pendimethalin + Oxyfluorfen, Imazethapyr + Imazamox and Imazethapyr.

Completely Randomized Block Design, chemical herbicides, weed control parameters

Based on the research finding, it seems quite logical to conclude efficient weed control in fenugreek can be achieved either by pre-emergence application of pendimethalin + imazethapyr (RM) under paucity of farm labourers.

Bhagyashree Phogat, Narendra Kumar Pareek, Shish Pal Singh, Amar Singh Godara and Abhijeet Purohit (2023). Influence of Herbicides on Weed Dynamics and Persistence in Fenugreek (Trigonellafoenum-graecum L.) in Arid Region. Biological Forum – An International Journal, 15(11): 39-47.