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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 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
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Index Copernicus ICV 2017: 100.00
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Int.J.Curr.Microbiol.App.Sci.2018.7(11): 824-831
DOI: https://doi.org/10.20546/ijcmas.2018.711.097


To Study the Effect of Weed Observation Practices in Transplanted Kodomillet (Paspalum scrobiculatum L.)
Yendrembam Bebila Chanu1*, S. Jawahar2, K. Nandini Devi1, Priyanka Irungbam1 and Jamkhogin Lhungdim1
1Department of Agronomy, College of Agriculture C. A. U, Imphal-795004, India
2Department of Agronomy, Annamalai University, Tamil Nadu-608002, India
*Corresponding author
Abstract:

A field experiment was carried out at the Experimental Farm, Department of Agronomy, Faculty of Agriculture, Annamalai University, Annamalainagar, Tamil Nadu, India during Kharif season (June-October) 2014 to study the effect of weed observation practices in transplanted kodo millet (Paspalum scrobiculatum L.). The experiment consists of six viz., T1 - Unweeded control, T2 - Hand weeding on 20th and 40th days after transplanting (DAT), T3 - Pre – emergence application of Butachlor @1.5 kg a.i /ha on 3 DAT, T4 - Pre - emergence application of Pretilachlor @ 0.5 kg a.i/ ha on 3 DAT, T5 - Post – emergence application of 2, 4, D- Na Salt @ 0.75 kg a.i/ha on 20 DAT and T6 - Post – emergence application of Bispyribac- Sodium @ 20 g /ha on 20 DAT. The experiment was lay out in randomize block design with four replications. The results revealed that hand weeding on 20 and 40 DAT (Tâ‚‚) recorded the least individual weed count of 1.37 m⁻² of C. rotundus, 1.93 m⁻² of B. capensis and 2.77 m⁻² of C. rotundus, 2.62 m⁻² of B. capensison 30 and 60 DAT. Similarly the hand weeding on 20 and 40 DAT (Tâ‚‚) controlled most of the weeds and recoded the least total weed count of 7.63 m-2and 13.58 m-2 on 30 and 60 DAT. Among the treatments, hand weeding on 20 and 40 DAT (Tâ‚‚) was superior and recorded the lowest weed biomass of 4.83 kg ha-1 and 7.79 kg ha ⁻¹ on 30 and 60 DAT. At 30 and 60 DAT, the highest weed control index of 69.41 and 62.56 per cent were recorded from the treatment of hand weeding on 20 and 40 DAT. Among the various herbicide tested, hand weeding on 20 and 40 DAT (Tâ‚‚) recorded the lowest nutrient removal by weeds of 15.64, 7.64 and 13.94 kg N, Pâ‚‚Oâ‚… and Kâ‚‚O ha-1. The highest B:C ratio (2.41) was recorded from the treatment T6 i.e. post emergence application of bispyribac sodium @ 20 g ha-1 on 20 DAT. Thus, application of bispyribac sodium @ 20 g ha⁻¹ on 20 DAT holds immense potentiality to control the all types of weeds, boost the productivity and profitability of transplanted kodo millet.


Keywords: Butachlor, Bispyribac-sodium, Kodo millet, Weed observation
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How to cite this article:

Yendrembam Bebila Chanu, S. Jawahar, K. Nandini Devi, Priyanka Irungbam and Jamkhogin Lhungdim. 2018. To Study the Effect of Weed Observation Practices in Transplanted Kodomillet (Paspalum scrobiculatum L.).Int.J.Curr.Microbiol.App.Sci. 7(11): 824-831. doi: https://doi.org/10.20546/ijcmas.2018.711.097