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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (34) Last page : (40)
Article doi: : http://dx.doi.org/10.18782/2320-6483

Nutrient Uptake and Yield of Direct Seeded Rice as Influenced by Nitrogen and Weed Management Practices

B. Rama Devi¹* and Yashwant Singh²

¹Research Scholar, Department of Agronomy, ²Professor, Department of Agronomy,
Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
*Corresponding Author E-mail: bonuramadevi@gmail.com
Received: 16.05.2018  |  Revised: 24.06.2018   |  Accepted: 5.07.2018

 

 ABSTRACT

A field experiment was conducted during the rainy (Kharif) season in 2015 and 2016 at Agricultural Research Farm, Department of Agronomy, Institute of Agricultural sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India to study nitrogen and weed management in direct seeded rice. The experiment consisted of four nitrogen splits in main-plots with six weed management practices in sub-plots in a split plot design with three replications. Result revealed that NPK content in grain and straw, their uptake and yield were significantly higher with the application of ¼ N at basal + ¼ at active tillering stage + ¼ N at panicle initiation stage + ¼ at heading stage and was at par with 1/3 N at basal + 1/3 N at active tillering stage + 1/3 N at panicle initiation stage than other nitrogen treatments. Whereas, harvest index was not significantly influenced by nitrogen and weed management treatments. Among weed management practices, application of bispyribac at 25 g a.i. ha-1 + azimsulfuron  at 17.5 g  a.i. ha-1 + NIS (0.25 %) at 15-20 DAS recorded maximum yield (grain and straw), NPK content in grain and straw and their uptake and was found at par with two hand weedings at 20 and 40 DAS during both the years of study.

Key words: Nitrogen uptake, Direct seeded rice, Weed management, and Yield.

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

Cite this article: Rama Devi, B. and Singh, Y., Nutrient Uptake and Yield of Direct Seeded Rice as Influenced by Nitrogen and Weed Management Practices, Int. J. Pure App. Biosci.6(5): 34-40 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6483