Open Access

ARTICLE

Sources of Nitrogen in Combination with Systems of Irrigation Influence the Productivity of Modern Rice (Oryza sativa L.) Cultivars during Dry Season in Sub-Tropical Environment

Uttam Kumer Sarker¹, Md. Romij Uddin^1,*, Ahmed Khairul Hasan¹, Md. Abdur Rahman Sarkar¹, Md. Abdus Salam¹, Md. Alamgir Hossain², Eldessoky S. Dessoky³, Ismail A. Ismail³
1 Department of Agronomy, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
2 Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
3 Department of Biology, College of Science, Taif University, Taif, 21944, Saudi Arabia
* Corresponding Author: Md. Romij Uddin. Email:
(This article belongs to this Special Issue: High-Yield Rice Physiology & Genetics)

Phyton-International Journal of Experimental Botany 2022, 91(8), 1687-1708. https://doi.org/10.32604/phyton.2022.020645

Received 04 December 2021; Accepted 27 January 2022; Issue published 14 April 2022

Abstract

In irrigated agricultural systems, nitrogen (N) and water are the vital resources for sustainability of the crop production in the modern era of climate change. The current study aimed to assess the impact of water and N management on the productivity of irrigated rice cultivars. In the context, a field observation was done at the research farm of Bangladesh Agricultural University, Mymensingh, during dry seasons in consecutive two years (2018–2019 and 2019–2020). The experiments were set up following split-plot design assigning water management in the main plots, nitrogen management in the sub-plots, and the cultivars were approved in the split-split plot with three replications. After two years observation, it was revealed that rice cultivar Binadhan-8 gave the maximum value of leaf area index, number effective tillers hill^-1 and grains panicle^-1 which lead to the higher grain yield (GY). Substantial relationships were observed among the concentration of N, growth, total dry matter (TDM) and N content, N uptake, N utilization effectiveness, and GY. However, with little exception, the Combined effect of water and N, cultivars and water management were varied significantly for all parameters. Finally, the results of the current study concluded that application of irrigation at 8 days after the disappearance of ponded water and source of 105 kg N ha^-1 from PU + Poultry manure are the best management approach for the excellent performance of rice cultivar Binadhan-8.

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Keywords

Growth stage; high yielding rice cultivar; internal N use efficiency; water productivity

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