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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (1191) Last page : (1197)
Article doi: : http://dx.doi.org/10.18782/2320-7094

Bioefficacy of Pre and Post Emergence Herbicides against Coronopus didymus and Melilotus indicus

Sudesh Devi*, Sanjay Kumar Thakral, Virender Singh Hooda and Samunder Singh

Department of Agronomy, College of Agriculture, CCS Haryana Agricultural University, Hisar, 125004
*Corresponding Author E-mail: drmalik107@gmail.com
Received: 13.08.2018 | Revised: 22.09.2018 | Accepted: 1.10.2018  

 ABSTRACT

An experiment was conducted during Rabi season of 2015-16 and 2016-17 in the screen house of Agronomy Department, CCS Haryana Agricultural University, Hisar, to study the effect of herbicides as pre and post emergence on Coronopus didymus and Melilotus indicus. The treatment comprise pre-emergence application of pendimethalin (1000 gram/hectare) and pre and post emergence application of imazethapyr (50, 75, and 100 g/ha) and ready mix of imazethapyr + imazamox (50, 60 and 70 g/ha). In both years of the study, the seedling emergence, fresh and dry weight (gram/pot) of C. didymus and M. indicus was found to be significantly lower under pre-emergence application of herbicides as compared to post emergence application of similar herbicides at similar doses. Among pre emergence application of herbicides, the visual mortality of C. didymus was recorded between 80-100 per cent and between 70-90 per cent for M. indicus. Among post emergence application of herbicides, RM of imazethapyr + imazamox (70 g/ha) recorded significantly lower fresh and dry weight (g/pot) of C. didymus and M. indicus with visual mortality in range of 50 - 75 per cent. Pre-emergence application of pendimethalin, imazethapyr and RM of imazethapyr + imazamox may found to be effective in controlling emergence and growth of C. didymus and M. indicus. For post emergence management of both dicotyledonous weeds, higher dose of imazethapyr i.e. 100 g/ha and ready mix of imazethapyr + imazamox i.e. 100 and 70 g/ha, respectively, could be used, with spray at 3-4 week old seedling.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Devi, S., Thakral, S. K., Hooda, V. S. and Singh, S., Bioefficacy of pre and post emergence herbicides against Coronopus didymus and Melilotus indicus, Int. J. Pure App. Biosci.6(5): 1191-1197 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7094