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Silicon in Sugarcane: Availability in Soil, Fertilization, and Uptake

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Abstract

Purpose

Silicon (Si) is the predominant element in soils, but is usually sparingly soluble and limited in its availability for plant uptake. Although Si is not a nutrient, Si fertilization may be necessary in weathered soils where Si is depleted to obtain increased yield, especially for Si-accumulating plants such as sugarcane. The multiple harvest of sugarcane crops in such soils may lead to Si depletion over time if Si supplementation is not practiced. However, there is a lack of information about soils type and Si concentrations in soils with positive responses to Si fertilization.

Methods

Advances in methods of analysis of Si in soil and plants and their implementation in future studies can improve our understanding of the dynamics of Si in soil-sugarcane systems. Additionally, the responses to Si fertilization require further investigation in sugarcane, which is planted in tropical and sub-tropical regions of the world where soils are strongly weathered and Si-depleted.

Results

Here, we review our current state of knowledge on Si solubility, availability for plant uptake, responses to Si fertilization, and its uptake in sugarcane.

Conclusions

This paper summarized outcomes from early and recent research on Si in sugarcane, with a view to improving yields through appropriate Si nutrition.

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Acknowledgements

The first author would like to thank the São Paulo State Research Foundation (FAPESP) for financial support of research projects (06/06288-2; 08/10795-2; 13/04144-7; 18/05843-0), which provided several results for this review.

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The authors have no relevant financial or non-financial interests to disclose.

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Authors and Affiliations

  1. Agência Paulista de Tecnologia dos Agronegócios (APTA), P.O. Box 28, 13412-050, Piracicaba, SP, Brazil

    Mônica Sartori Camargo

  2. South African Sugarcane Research Institute, Private Bag X02, Mount Edgecombe, Blackburn, 4300, South Africa

    Malcolm G. Keeping

  3. School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, P.O. Wits 2050, Johannesburg, South Africa

    Malcolm G. Keeping

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All authors contributed to the study conception of this article. Mônica Sartori Camargo performed the literature search and data analysis, and wrote the first draft. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Camargo, M.S., Keeping, M.G. Silicon in Sugarcane: Availability in Soil, Fertilization, and Uptake. Silicon 13, 3691–3701 (2021). https://doi.org/10.1007/s12633-020-00935-y

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