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Manning DAC, Baptista J, Sanchez Limon M, et al. Testing the ability of plants to access potassium from framework silicate minerals. Sci Total Environ. 2016;574:476-481doi: 10.1016/j.scitotenv.2016.09.086.
Manning, D. A. C., Baptista, J., Sanchez Limon, M., & Brandt, K. (2017). Testing the ability of plants to access potassium from framework silicate minerals. The Science of the total environment, 574476-481. https://doi.org/10.1016/j.scitotenv.2016.09.086
Manning, David A C, et al. "Testing the ability of plants to access potassium from framework silicate minerals." The Science of the total environment vol. 574 (2017): 476-481. doi: https://doi.org/10.1016/j.scitotenv.2016.09.086
Manning DAC, Baptista J, Sanchez Limon M, Brandt K. Testing the ability of plants to access potassium from framework silicate minerals. Sci Total Environ. 2017 Jan 01;574:476-481. doi: 10.1016/j.scitotenv.2016.09.086. Epub 2016 Oct 14. PMID: 27644025.
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Sci Total Environ. 2017 Jan 01;574:476-481. doi: 10.1016/j.scitotenv.2016.09.086. Epub 2016 Oct 14.

Testing the ability of plants to access potassium from framework silicate minerals.

The Science of the total environment

David A C Manning, Joana Baptista, Mallely Sanchez Limon, Kirsten Brandt

Affiliations

  1. School of Civil Engineering & Geosciences, Newcastle University, NE1 7RU, Newcastle upon Tyne, UK. Electronic address: [email protected].
  2. School of Civil Engineering & Geosciences, Newcastle University, NE1 7RU, Newcastle upon Tyne, UK.
  3. University Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 69100 Villeurbanne, France.
  4. School of Agriculture, Food and Rural Development, Newcastle University, NE1 7RU, Newcastle upon Tyne, UK.

PMID: 27644025 DOI: 10.1016/j.scitotenv.2016.09.086

Abstract

The availability of K, essential for plant growth, from syenite (a silicate rock in which potassium feldspar is the dominant mineral; >90wt%), and phlogopite mica has been demonstrated using carefully designed plant growth pot experiments in which the only added source of K was the mineral of interest, with no loss of nutrients through drainage. Using pure quartz sand as a soil, both growth (increase in diameter) of leek plants and K-content of the plant material showed a dose-dependent positive response to the application (114-43000mgK/pot) of milled syenite with increases in plant diameter of 0.5-0.7mm/week, increasing with application rate. Phlogopite mica (114-6000mgK/pot) supported the highest observed increase in diameter (approx. 1mm/week) and plant K-content, both similar to that observed for a positive control (KCl). These experiments demonstrate that plants can obtain K for growth from milled syenite, in which feldspar is the dominant K-bearing mineral, and confirm previous observations that micas can be an effective source of K.

Copyright © 2016 Elsevier B.V. All rights reserved.

Keywords: Feldspar; Fertiliser; Mica; Mineral; Potassium; Silicate; Soil

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