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Estimated Carbon Sequestration by Rice Roots as Affected by Silicon Fertilizers

  • BIOGEOCHEMISTRY
  • Published:
Moscow University Soil Science Bulletin Aims and scope

Abstract

One of the most relevant tasks of modern agriculture is developing and implementing fundamentally new, available, environmentally safe “nature-like” technologies, providing a “sink” of carbon or a significant reduction in greenhouse gas emissions in all the agricultural landscapes, including those engaged in rice cultivation. In field trials conducted in Hunan province (China), the influence of silicon fertilizers on CO2 sequestration by rice plant roots was estimated. Its value depends on the content of available silicon in agrochemicals, on frequency and duration of their use, and on soil texture. The data obtained indicate the important role of silicon fertilizers in the processes of carbon sequestration and reduction of greenhouse gas emissions in rice cultivation. Their application results in increased crop yields by 12.1–71.2% and increased CO2 sequestration by plant roots by 0.95–14.9 t ha–1 in one season. Soil carbon recovery and soil fertility reproduction can be ensured by intensive development of the plant root system and by an increase in root residues’ mass after harvest. Agrochemicals containing silicon available for plants should be included in the 4R-strategy for mineral nutrition of agricultural crops.

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Funding

The study was carried out within the framework of the government project no. АААА-А17-117030110137-5 and АААА-А17-117030110139-9 partially funded by the Hunan Natural Science Fund Project (2018JJ3276); the China Central Guide, the Development of Local Science and Technology Special Foundation (2017XF5042); the Science and Technology Program of Changsha City (kq1706153); the Hunan Provincial Base for Scientific and Technological Innovation Cooperation (2018WK4013).

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Authors and Affiliations

  1. Hunan University of Finance and Economics, Changsha, China

    Zhao Dan-Dan

  2. College of Resources & Environment, Hunan Agricultural University, Changsha, China

    Zhang Peng-Bo

  3. Hunan Institute of Economic Geography, Changsha, China

    Zhao Dan-Dan & Zhang Peng-Bo

  4. Institute of Basic Biological Problems, Russian Academy of Sciences, Puschino, Russia

    E. A. Bocharnikova & V. V. Matichenkov

  5. Moscow State University, Moscow, Russia

    D. M. Khomyakov & E. P. Pakhnenko

Authors
  1. Zhao Dan-Dan
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  2. Zhang Peng-Bo
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  3. E. A. Bocharnikova
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  4. V. V. Matichenkov
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  5. D. M. Khomyakov
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  6. E. P. Pakhnenko
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Corresponding authors

Correspondence to Zhao Dan-Dan, Zhang Peng-Bo, E. A. Bocharnikova, V. V. Matichenkov, D. M. Khomyakov or E. P. Pakhnenko.

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Translated by A. Ivanitskaia

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Dan-Dan, Z., Peng-Bo, Z., Bocharnikova, E.A. et al. Estimated Carbon Sequestration by Rice Roots as Affected by Silicon Fertilizers. Moscow Univ. Soil Sci. Bull. 74, 105–110 (2019). https://doi.org/10.3103/S0147687419030025

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  • DOI: https://doi.org/10.3103/S0147687419030025

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