Phytolith-associated potassium in fern: characterization, dissolution properties and implications for slash-and-burn agriculture

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Chin T. Tran
  • N. T. Mai
  • Van Thanh A. Nguyen
  • A. Meharg
  • M. Carey
  • Stefan Dultz
  • Federica Marone
  • Sarah B. Cichy
  • Minh Ngoc Nguyen
  • Huan Huu Nguyen

External Research Organisations

  • Vietnam National University
  • Ha Tay Community College (HTCC)
  • Queen's University Belfast
  • Paul Scherrer Institut (PSI)
  • University of Potsdam
View graph of relations

Details

Original languageEnglish
Pages (from-to)28-36
Number of pages9
JournalSoil Use and Management
Volume34
Issue number1
Early online date27 Mar 2018
Publication statusPublished - 27 Mar 2018

Abstract

In recent time, phytoliths (silicon deposition between plant cells) have been recognized as an important nutrient source for crops. The work presented here aims at highlighting the potential of phytolith-occluded K pool in ferns. Dicranopteris linearis (D. linearis) is a common fern in the humid subtropical and tropical regions. Burning of the fern D. linearis is, in slash-and-burn regions, a common practice to prepare the soil before planting. We characterised the phytolith-rich ash derived from the fern D. linearis and phytolith-associated potassium (K) (phytK), using X-ray tomographic microscopy in combination with kinetic batch experiments. D. linearis contains up to 3.9 g K/kg d.wt, including K subcompartmented in phytoliths. X-ray tomographic microscopy visualized an interembedding structure between organic matter and silica, particularly in leaves. Corelease of K and Si observed in the batch experiments confirmed that the dissolution of ash phytoliths is one of major factors controlling K release. Under heat treatment, a part of the K is made available, while the remainder entrapped into phytoliths (ca. 2.0–3.3%) is unavailable until the phytoliths are dissolved. By enhanced removal of organic phases, or forming more stable silica phases, heat treatment changes dissolution properties of the phytoliths, affecting K release for crops and soils. The maximum releases of soluble K and Si were observed for the phytoliths treated at 500–800 °C. For quantitative approaches for the K provision of plants from the soil phytK pool in soils, factors regulating phytolith dissolution rate have to be considered.

Keywords

    Dicranopteris linearis, fern, phytolith, Potassium

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Phytolith-associated potassium in fern: characterization, dissolution properties and implications for slash-and-burn agriculture. / Tran, Chin T.; Mai, N. T.; Nguyen, Van Thanh A. et al.
In: Soil Use and Management, Vol. 34, No. 1, 27.03.2018, p. 28-36.

Research output: Contribution to journalArticleResearchpeer review

Tran, CT, Mai, NT, Nguyen, VTA, Meharg, A, Carey, M, Dultz, S, Marone, F, Cichy, SB, Nguyen, MN & Nguyen, HH 2018, 'Phytolith-associated potassium in fern: characterization, dissolution properties and implications for slash-and-burn agriculture', Soil Use and Management, vol. 34, no. 1, pp. 28-36. https://doi.org/10.1111/sum.12409
Tran, C. T., Mai, N. T., Nguyen, V. T. A., Meharg, A., Carey, M., Dultz, S., Marone, F., Cichy, S. B., Nguyen, M. N., & Nguyen, H. H. (2018). Phytolith-associated potassium in fern: characterization, dissolution properties and implications for slash-and-burn agriculture. Soil Use and Management, 34(1), 28-36. https://doi.org/10.1111/sum.12409
Tran CT, Mai NT, Nguyen VTA, Meharg A, Carey M, Dultz S et al. Phytolith-associated potassium in fern: characterization, dissolution properties and implications for slash-and-burn agriculture. Soil Use and Management. 2018 Mar 27;34(1):28-36. Epub 2018 Mar 27. doi: 10.1111/sum.12409
Download
@article{9533e46073a84e2c9775990bdeb41da4,
title = "Phytolith-associated potassium in fern: characterization, dissolution properties and implications for slash-and-burn agriculture",
abstract = "In recent time, phytoliths (silicon deposition between plant cells) have been recognized as an important nutrient source for crops. The work presented here aims at highlighting the potential of phytolith-occluded K pool in ferns. Dicranopteris linearis (D. linearis) is a common fern in the humid subtropical and tropical regions. Burning of the fern D. linearis is, in slash-and-burn regions, a common practice to prepare the soil before planting. We characterised the phytolith-rich ash derived from the fern D. linearis and phytolith-associated potassium (K) (phytK), using X-ray tomographic microscopy in combination with kinetic batch experiments. D. linearis contains up to 3.9 g K/kg d.wt, including K subcompartmented in phytoliths. X-ray tomographic microscopy visualized an interembedding structure between organic matter and silica, particularly in leaves. Corelease of K and Si observed in the batch experiments confirmed that the dissolution of ash phytoliths is one of major factors controlling K release. Under heat treatment, a part of the K is made available, while the remainder entrapped into phytoliths (ca. 2.0–3.3%) is unavailable until the phytoliths are dissolved. By enhanced removal of organic phases, or forming more stable silica phases, heat treatment changes dissolution properties of the phytoliths, affecting K release for crops and soils. The maximum releases of soluble K and Si were observed for the phytoliths treated at 500–800 °C. For quantitative approaches for the K provision of plants from the soil phytK pool in soils, factors regulating phytolith dissolution rate have to be considered.",
keywords = "Dicranopteris linearis, fern, phytolith, Potassium",
author = "Tran, {Chin T.} and Mai, {N. T.} and Nguyen, {Van Thanh A.} and A. Meharg and M. Carey and Stefan Dultz and Federica Marone and Cichy, {Sarah B.} and Nguyen, {Minh Ngoc} and Nguyen, {Huan Huu}",
note = "Publisher Copyright: {\textcopyright} 2018 British Society of Soil Science Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",
year = "2018",
month = mar,
day = "27",
doi = "10.1111/sum.12409",
language = "English",
volume = "34",
pages = "28--36",
journal = "Soil Use and Management",
issn = "0266-0032",
publisher = "Wiley-Blackwell",
number = "1",

}

Download

TY - JOUR

T1 - Phytolith-associated potassium in fern

T2 - characterization, dissolution properties and implications for slash-and-burn agriculture

AU - Tran, Chin T.

AU - Mai, N. T.

AU - Nguyen, Van Thanh A.

AU - Meharg, A.

AU - Carey, M.

AU - Dultz, Stefan

AU - Marone, Federica

AU - Cichy, Sarah B.

AU - Nguyen, Minh Ngoc

AU - Nguyen, Huan Huu

N1 - Publisher Copyright: © 2018 British Society of Soil Science Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018/3/27

Y1 - 2018/3/27

N2 - In recent time, phytoliths (silicon deposition between plant cells) have been recognized as an important nutrient source for crops. The work presented here aims at highlighting the potential of phytolith-occluded K pool in ferns. Dicranopteris linearis (D. linearis) is a common fern in the humid subtropical and tropical regions. Burning of the fern D. linearis is, in slash-and-burn regions, a common practice to prepare the soil before planting. We characterised the phytolith-rich ash derived from the fern D. linearis and phytolith-associated potassium (K) (phytK), using X-ray tomographic microscopy in combination with kinetic batch experiments. D. linearis contains up to 3.9 g K/kg d.wt, including K subcompartmented in phytoliths. X-ray tomographic microscopy visualized an interembedding structure between organic matter and silica, particularly in leaves. Corelease of K and Si observed in the batch experiments confirmed that the dissolution of ash phytoliths is one of major factors controlling K release. Under heat treatment, a part of the K is made available, while the remainder entrapped into phytoliths (ca. 2.0–3.3%) is unavailable until the phytoliths are dissolved. By enhanced removal of organic phases, or forming more stable silica phases, heat treatment changes dissolution properties of the phytoliths, affecting K release for crops and soils. The maximum releases of soluble K and Si were observed for the phytoliths treated at 500–800 °C. For quantitative approaches for the K provision of plants from the soil phytK pool in soils, factors regulating phytolith dissolution rate have to be considered.

AB - In recent time, phytoliths (silicon deposition between plant cells) have been recognized as an important nutrient source for crops. The work presented here aims at highlighting the potential of phytolith-occluded K pool in ferns. Dicranopteris linearis (D. linearis) is a common fern in the humid subtropical and tropical regions. Burning of the fern D. linearis is, in slash-and-burn regions, a common practice to prepare the soil before planting. We characterised the phytolith-rich ash derived from the fern D. linearis and phytolith-associated potassium (K) (phytK), using X-ray tomographic microscopy in combination with kinetic batch experiments. D. linearis contains up to 3.9 g K/kg d.wt, including K subcompartmented in phytoliths. X-ray tomographic microscopy visualized an interembedding structure between organic matter and silica, particularly in leaves. Corelease of K and Si observed in the batch experiments confirmed that the dissolution of ash phytoliths is one of major factors controlling K release. Under heat treatment, a part of the K is made available, while the remainder entrapped into phytoliths (ca. 2.0–3.3%) is unavailable until the phytoliths are dissolved. By enhanced removal of organic phases, or forming more stable silica phases, heat treatment changes dissolution properties of the phytoliths, affecting K release for crops and soils. The maximum releases of soluble K and Si were observed for the phytoliths treated at 500–800 °C. For quantitative approaches for the K provision of plants from the soil phytK pool in soils, factors regulating phytolith dissolution rate have to be considered.

KW - Dicranopteris linearis

KW - fern

KW - phytolith

KW - Potassium

UR - http://www.scopus.com/inward/record.url?scp=85044523002&partnerID=8YFLogxK

U2 - 10.1111/sum.12409

DO - 10.1111/sum.12409

M3 - Article

AN - SCOPUS:85044523002

VL - 34

SP - 28

EP - 36

JO - Soil Use and Management

JF - Soil Use and Management

SN - 0266-0032

IS - 1

ER -