Efficacy of post emergence herbicides on weed control and seed yield of rajmash (Phaseolus vulgaris L.)
2012
Ram, Baldev | Punia, S.S. | Meena, D.S. | Tetarwal, J.P.
A field experiment was conducted during rabi of 2008–10 at Agricultural Research Station, Ummedganj, Kota to evaluate the efficacy of graded dose of imazethapyr and quizalofop ethyl against weed complex in rajmash. Application of imazethapyr 50 g/ha applied at 20 days after sowing (DAS) significantly reduced the weed density and their biomass recorded at 80 DAS as compared to both weedy check and graded dose of quizalofop ethyl applied at 20 and 30 DAS. The former also recorded significantly taller plants (43.0 cm), branches/plant (3.7), pods/plant (18.2), seeds/pod (4.2), seed index (28.5 g) and seed yield (710 kg/ha) over both weedy check and graded dose of quizalofop ethyl. In addition, imazethapyr 50 g/ha at 20 DAS had maximum net return (17360/ha) and B:C ratio (1.19) with least weed index (4.2%); and was superior to all treatments including hand weeding twice at 20 & 40 DAS.
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