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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(3): 2984-2989
DOI: https://doi.org/10.20546/ijcmas.2018.703.345


Weed Dynamics and Productivity of Hybrid Maize (Zea mays) as Affected by Integrated Weed Management Practices
R. Nagasai Vardhan Naik1* and A. Velayutham2
1Department of Agronomy, Agricultural College and Research Institute (AC&RI), Killikulam, India
2Department of Farm Management, AC&RI, Killikulam, Tamil Nadu, India
*Corresponding author
Abstract:

A field experiment was conducted during Rabi season of 2015-2016 at Agricultural College and Research Institute, Killikulam to find out the most effective weed control measure study weed dynamics, productivity and economics of hybrid maize as affected by integrated weed management. None of the pre-emergence herbicides alone provided desired control of weeds. However, inclusion of one hand weeding at 30 DAS with pre-emergence herbicides markedly improved weed control efficiency (WCE), yield attributes, grain and stover yield. Alachlor @ 1.5 kg a.i./ ha + HW at 30 DAS proved most effective in controlling weeds (WCE 90.33%) followed by two hand weedings at 15 and 30 DAS(WCE 84.08%) and they reduce the weed density and weed biomass significantly, which in turn increased yield compared with unweeded control. Significantly highest grain yield were recorded underalachlor @ 1.5 kg a.i./ ha + HW at 30 DAS (7115 kg ha-1) followed by two hand weedings at 15 and 30 DAS (6855 kg ha-1) and mechanical weeding with power weeder twice on 15 and 30 DAS(6714 kg ha-1). The highest net returns and highest benefit: cost ratio were obtained under alachlor @ 1.5 kg a.i./ ha + HW at 30 DAS followed by two hand weedings at 15 and 30 DAS.


Keywords: Economics, Herbicides, Integrated weed management, Maize, yield
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How to cite this article:

Nagasai Vardhan Naik, R. and Velayutham, A. 2018. Weed Dynamics and Productivity of Hybrid Maize (Zea mays) as Affected by Integrated Weed Management Practices.Int.J.Curr.Microbiol.App.Sci. 7(3): 2984-2989. doi: https://doi.org/10.20546/ijcmas.2018.703.345