Response of variety and sulphur on yield attributes and yield of boro rice in Haor area of Bangladesh
DOI:
https://doi.org/10.26832/24566632.2025.100405Keywords:
Boro rice, Haor ecosystem, Hybrid rice, Sulphur fertilization, Varietal performance, Yield attributesAbstract
The haor region of Bangladesh offers substantial scope to enhance boro rice productivity through improved soil nutrient management and adoption of high-yielding varieties. This study aimed to evaluate the interactive effects of rice variety and sulphur application on growth and yield performance under haor conditions. A field experiment was conducted at Dhoronti Haor, Nasirnagar, Brahmanbaria district of Bangladesh during January–April 2023 using four varieties—BRRI dhan28, BRRI dhan29, BRRI dhan89, and Hira-2 (Hybrid)—and five sulphur levels (0, 55, 110, 165, and 220 kg S ha-¹) with recommended fertilizer doses. The experiment followed a split-plot design with three replications, assigning varieties to main plots and sulphur levels to subplots. Results revealed significant (p < 0.05) main and interaction effects of variety and sulphur on most growth and yield traits. The hybrid Hira-2 produced the highest filled grains panicle-¹ (323.0), panicle length (22.0 cm), thousand-grain weight (28.79 g), and grain yield (9.24 t ha-¹), whereas BRRI dhan28 showed the lowest performance. Sulphur application significantly improved yield attributes, with the optimum yield (7.42 t ha-¹) obtained at 165 kg S ha-¹, beyond which no further increase was observed. Variety × Sulphur interaction indicated that Hira-2 and BRRI dhan89 were most responsive to moderate sulphur levels, while BRRI dhan28 showed limited response. The integration of hybrid rice variety Hira-2 with an optimum sulphur rate of 165 kg S ha-¹ can substantially enhance grain yield and resource-use efficiency, offering a sustainable intensification strategy for the haor agroecosystem.
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