Effect of weed management practices on seed yield of berseem (Trifolium alexandrinum L.) Sahu Poornima1, Wasnik Vinod Kumar2,*, Halli H.M.3, Mahesha H.S.2, Yadav V.K.2 1Institute of Agriculture Sciences, Bundelkhand University, Jhansi, Uttar Pradesh284001, India 2ICAR-Indian Grassland and Fodder Research Institute, Jhansi, Uttar Pradesh284003, India 3ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra413115, India *Corresponding author email: vinod.wasnik01@gmail.com
Online Published on 18 January, 2024. Abstract Field research was conducted during the winter season of 2020-21 at Central Research Farm of the ICAR-Indian Grassland and Fodder Research Institute, Jhansi, (U. P.) to study the effect of weed management practices on seed yield of berseem (Trifolium alexandrinum L.). The study was conducted in a randomized block design with three replications with a set of seven treatments. The treatment combinations consisted of pre-emergence application (PE) of pendimethalin + imazethapyr and post-emergence application (PoE) of imazethapyr + imazamox, glyphosate followed by (fb) imazethapyr + imazamox, glyphosate fb one hand weeding (HW) along with mechanical stale seedbed, weed free and weedy check. At 30 days after sowing of berseem, application of glyphosate 1.0 kg/ha to kill the existing weed flora before sowing (as chemical stale seedbed) fb one hand weeding and at first and second cut glyphosate 1.0 kg/ ha fb imazethapyr + imazamox 0.07 kg/ha as post emergence were found to be most effective in reducing weed density and biomass. Weed free treatment registered the significantly highest green fodder (28.98 t/ha), straw (3.20 t/ha) and seed yield (545.00 kg/ha) of berseem followed by glyphosate 1.0 kg/ha fb imazethapyr + imazamox 0.07 kg/ha. The highest net returns  |
70,597/ha and benefit: cost (2.23) was recorded with glyphosate 1.0 kg/ha fb imazethapyr + imazamox 0.07 kg/ha.Top Keywords Berseem, Glyphosate, Imazamox, Trifolium alexandrinum, Weed management, Yield. Top |