Mehriya, M.L.Meena, Vikash2024-04-252024-04-252022-11-26Meena, Vikash 2022. Efficacy of Herbicides in Fenugreek (Trigonella foenum-graecum L.). M.Sc. Thesis, College of Agriculture, Agriculture University, Jodhpurhttps://krishikosh.egranth.ac.in/handle/1/5810208401The field experiment entitled “Efficacy of Herbicides in Fenugreek (Trigonella foenum-graecum L.)” was conducted at experimental field of the Agricultural Research Station Mandor, Jodhpur during Rabi season of 2021-22. The treatments consisting of ten treatments of herbicides viz. Pendimethalin 1 kg/ha, PE (T1), Pendimethalin + Imazethapyr (Ready mix) 800 g/ha, PE (T2), Diclosulam 20 g/ha, PE (T3), Flumioxazin 100 g/ha, PE (T4), Imazethapyr 50 g/ha (20 DAS) (T5), Sodium aciflurofan + Clodinafop propargyl (Ready mix) 210 g/ha (20 DAS) (T6), Fomesafen + Fluazifop p-butyl 220 g/ha 20 DAS (Ready mix) (T7), Fluazifop p-butyl, 250 g/ha (20 DAS) (T8), weed free (T9) and weedy check (T10) were laid out in randomized block design with three replications. The fenugreek var. RMT-305 was used for experimentation. Results showed that the weed observations, growth parameters, yield attributes and yield, nutrient content and uptake, quality and economics of fenugreek were significantly influenced due to application of different treatment of weed management. Application of Pendimethalin + Imazethapyr (Ready mix) 800 g/ha, PE (T2) gave significantly lowest density of different weeds viz., Chenopodium murale L., Chenopodium album L., Rumex dentatus L., other minor weeds and total weeds, total dry weight of weeds, lowest weed index and maximum weed control efficiency at 30, 60, 90 DAS and at harvest stages. Further, significantly higher plant height, dry matter accumulation, number of branches/plant, number of seeds/pod, length of pod, test weight, number of nodules/plant, fresh and dry weight of nodules, seed, straw and biological yields (1652 kg/ha, 4041 kg/ ha and 5693 kg/ha, respectively), nitrogen content and uptake by seed and straw, protein content in seed, net returns (Rs 79162/ha) and B: C ratio (4.32) of fenugreek were also obtained with Pendimethalin + Imazethapyr (Ready mix) 800 g/ha, PE (T2). Thus, the application of Pendimethalin + Imazethapyr (Ready mix) 800 g/ha, PE was found economically viable method of weed control in fenugreek having highest (75.12%) weed control efficiency along with highest seed yield, higher monetary returns and B: C ratio.Thesis