Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

Login as a Reviewer

Indexed in



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

See Guidelines to Authors
Current Issues

Original Research Articles

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(4): 2738-2746
DOI: https://doi.org/10.20546/ijcmas.2018.704.312


Effect of Weed Management and Nitrogen on Weed Dynamics and Yield of Rice under Aerobic Condition
Neha Nandan*, D.K. Roy, Pooja Kumari and Dharminder
Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar – 848 125, India
*Corresponding author
Abstract:

A field experiment was undertaken during kharif of the year 2016 at the Research Farm of Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur), Bihar to study the “Effect of weed management and nitrogen on weed dynamics and yield of rice under aerobic condition”. The experiment was conducted in split plot design having three levels of nitrogen in main plots (N1-120kg N/ha, N2-140kg N/ha and N3-160 kg N/ha) and six weed management practices [W1- Pyrazosulfuron @ 25g/ha (20 DAS), W2-Bispyribac sodium @ 25g/ha (20 DAS), W3-Pyrazosulfuron @ 25g/ha + Bispyribac sodium @ 25g/ha (20 DAS), W4-Pendimethalin @ 1000g/ha (PE)+ W3 (20 DAS), W5-Weed free (2 Hand weeding at 20 and 40 DAS) and W6-Weedy check] in sub plots, replicated thrice with Abhishek as the test variety. The results pertaining to weed population and weed dry weight by crop separately were a close reflection of growth and yield pattern in which the pre and post-emergence applications of Pendimethalin @ 1000 g/ha + Bispyribac sodium @ 25 g/ha + Pyrazosulfuron @ 25 g/ha established its superiority over the rest of the herbicidal treatments except in weed free condition wherein all these characters were superior in sub plots. Weed control efficiency of 2 hand weeding (70.81%) was superior to Pendimethalin @ 1000g/ha + Bispyribac sodium @ 25g/ha + Pyrazosulfuron @ 25g/ha (66.13%), Bispyribac sodium @ 25g/ha + Pyrazosulfuron @ 25 g/ha (59.83%), Bispyribac sodium @ 25g/ha (51.48%) and Pyrazosulfuron @ 25g/ha (40.40%). Pendimethalin @ 1.0 kg/ha fb Pyrazosulfuron @ 25g/ha + Bispyribac @ 25g/ha recorded highest grain yield (37.50q/ha) and straw yield (48.75q/ha) after manual weeding. High cost involved in manual weeding makes herbicidal treatments more viable proposition. Bispyribac sodium @ 25g/ha + Pyrazosulfuron @ 25g/ha, Bispyribac sodium @ 25g/ha alone and Pendimethalin @ 1000g/ha + Bispyribac sodium @ 25g/ha + Pyrazosulfuron @ 25g/ha are three most effective herbicidal combination treatments in direct seeded rice under aerobic condition.


Keywords: Bispyribac-Na, Pyrazosulfuron, Weed dynamics, Direct seeded rice
Download this article as Download

How to cite this article:

Neha Nandan, D.K. Roy, Pooja Kumari and Dharminder. 2018. Effect of Weed Management and Nitrogen on Weed Dynamics and Yield of Rice under Aerobic Condition.Int.J.Curr.Microbiol.App.Sci. 7(4): 2738-2746. doi: https://doi.org/10.20546/ijcmas.2018.704.312