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Performance Evaluation of Different Sources and Rates of Silicon in Rice at Eastern Gangetic Coastal Plains

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Abstract

Silicon (Si) is recognized as a beneficial nutrient element especially for cereals; however, suitable sources and optimum rates of its application as a chemical fertilizer are not yet recommended. The purpose of this study was to identify the suitable source as well as the optimum rate of Si for achieving sustainable higher rice yield in eastern Gangetic coastal plains. Field experiments were conducted in two successive years of 2021 and 2022 during April–August (early monsoon season) using a popular rice variety, BRRI dhan48. The study comprised of two-factor randomized complete block design model with replicated thrice. Three sources of Si, such as silicic acid, sodium meta silicate, and calcium silicate, and seven rates of Si, viz. 0, 1, 2, 5, 10, 20, and 40 kg Si ha−1, were tested. The result of this study reveals that calcium silicate, sodium meta silicate, and silicic acid recorded grain yield of 4.70, 4.58, and 4.44 t ha−1 in 2021, 4.65, 4.54, and 4.61 t ha−1 in 2022, and 4.67, 4.56, and 4.52 t ha−1 based on pooled yield, respectively. Among three tested sources, based on yield performance and fertilizer price, calcium silicate was better followed by sodium meta silicate and silicic acid. The 20 kg Si ha−1 had the highest grain yield of 4.82, 4.87, and 4.85 t ha−1 in 2021, 2022, and pooled yield, respectively, although it was statistically similar with 10 kg Si ha−1 rate. However, based on quadratic polynomial model, 25 kg Si ha−1 is recommended for calcium silicate and sodium meta silicate, and 30 kg Si ha−1 for silicic acid. Calcium silicate, sodium meta silicate, and/or silicic acid at 10–20 kg Si ha−1 is recommended for rice at eastern Gangetic coastal plains.

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The analyzed data sets are available from the corresponding author on reasonable request.

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Acknowledgements

We would like to acknowledge the project, “Nutrient Management for Diversified Cropping in Bangladesh,” co-funded by the Australian Centre for International Agricultural Research (LWR/2016/136) and the Krishi Gobeshona Foundation, Bangladesh (ICP-II) for funding the expense of the study.

Funding

This work was supported by Australian Centre for International Agricultural Research (grant number-LWR/2016/136) and Krishi Gobeshona Foundation, Bangladesh (grant number-ICP-II).

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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by M. A. H. The first draft of the manuscript was written by M. A. H. M. A. H., Md F. H., Md B. H., R. Wi. B., and Md A. S. analyzed the data and wrote, revised, and improved the manuscript. Md J., Md B. H., Md A. S., Md E. H., and R. W. B. accomplish funding for the study work. All authors read and approved the final manuscript.

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Correspondence to Mohammad Asadul Haque.

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Haque, M.A., Hoque, M.F., Jahiruddin, M. et al. Performance Evaluation of Different Sources and Rates of Silicon in Rice at Eastern Gangetic Coastal Plains. J Soil Sci Plant Nutr 23, 5084–5096 (2023). https://doi.org/10.1007/s42729-023-01520-z

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  • DOI: https://doi.org/10.1007/s42729-023-01520-z

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