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Abstract
Miscanthus x giganteus is a giant C4 grass native to Asia. Unlike most C4 species, it is relatively cold tolerant due to adaptations across a wide range of altitudes. These grasses are characterized by high productivity and low input requirements, making them excellent candidates for bioenergy feedstock production. The aim of this study was to investigate the potential for growing Miscanthus on extremely marginal soils, degraded by open lignite (brown coal) mining. Field experiments were established within three blocks situated on waste heaps originating from the lignite mine. Analyses were conducted over the first 3 years following Miscanthus cultivation, focusing on the effect of organic and mineral fertilization on crop growth, development and yield in this extreme environment. The following levels of fertilization were implemented between the blocks: the control plot with no fertilization (D0), a plot with sewage sludge (D1), a plot with an identical amount of sewage sludge plus one dose of mineral fertilizer (D2) and a plot with an identical amount of sewage sludge plus a double dose of mineral fertilizer (D3). Crop development and characteristics (plant height, tillering, and biomass yield [dry matter]) were measured throughout the study period and analyzed using Analysis of Variance (ANOVA). Significant differences were apparent between plant development and 3rd year biomass production over the course of the study (0.964 kg plant-1 for DO compared to 1.503 kg plant-1 for D1). Soil analyses conducted over the course of the experiment showed that organic carbon levels within the soil increased significantly following the cultivation of Miscanthus, and overall, pH decreased. With the exception of iron, macronutrient concentrations remained stable throughout. The promising yields and positive effects of Miscanthus on the degraded soil suggests that long term plantations on land otherwise unsuitable for agriculture may prove to be of great environmental and economic significance
Original language | English |
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Article number | 726 |
Journal | Frontiers in Plant Science |
Volume | 8 |
DOIs | |
Publication status | Published - 12 Jun 2017 |
Keywords
- Miscanthus x giganteus
- biomass
- photo-remediation
- soil restoration
- Brown fields
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Dive into the research topics of 'Establishment, growth and yield potential of the perennial grass Miscanthus x giganteus on degraded coal mine soils'. Together they form a unique fingerprint.Projects
- 2 Finished
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BBSRC Core Strategic Programme in Resilient Crops: Miscanthus
Donnison, I. (PI)
Biotechnology and Biological Sciences Research Council
01 Apr 2017 → 31 Mar 2020
Project: Externally funded research
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Optimising and sustaining biomass yield
Donnison, I. (PI), Farrar, K. (PI) & Slavov, G. (PI)
01 Apr 2012 → 31 Mar 2017
Project: Externally funded research