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Risk assessment of replacing conventional P fertilizers with biomass ash : Residual effects on plant yield, nutrition, cadmium accumulation and mycorrhizal status

Cruz-Paredes, Carla LU orcid ; López-García, Álvaro ; Rubæk, Gitte H. ; Hovmand, Mads F. ; Sørensen, Peter and Kjøller, Rasmus (2017) In Science of the Total Environment 575. p.1168-1176
Abstract

Reutilizing biomass ashes in agriculture can substitute inputs of P from finite primary sources. However, recycling of ashes is disputed due to their content of toxic substances such as heavy metals. This study evaluates the potential risk of replacing easily soluble inorganic P fertilizer with P in biomass ashes in a barley crop grown on soil with adequate P status. Two contrasting doses of three different types of ashes were applied to an agricultural field with spring barley and compared to similar doses of triple-superphosphate fertilizer. In the second growing season after biomass ash application, grain, straw and root dry matter yield, and P and Cd uptake were determined. Resin-extractable P was measured in soil and the symbiotic... (More)

Reutilizing biomass ashes in agriculture can substitute inputs of P from finite primary sources. However, recycling of ashes is disputed due to their content of toxic substances such as heavy metals. This study evaluates the potential risk of replacing easily soluble inorganic P fertilizer with P in biomass ashes in a barley crop grown on soil with adequate P status. Two contrasting doses of three different types of ashes were applied to an agricultural field with spring barley and compared to similar doses of triple-superphosphate fertilizer. In the second growing season after biomass ash application, grain, straw and root dry matter yield, and P and Cd uptake were determined. Resin-extractable P was measured in soil and the symbiotic arbuscular mycorrhizal fungal activity, colonization, and community composition were assessed. Crop yield was not affected by ash application, while P-uptake and mycorrhizal status were slightly enhanced with high ash applications. Changes to the mycorrhizal community composition were evident with high ash doses. Cadmium uptake in aboveground plant tissue was unaffected by ash treatments, but increased in roots with increasing doses. Consequently, we conclude that fertilization with biomass ashes can replace conventional fertilizers without risk to barley crops in the short term.

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author
; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
keywords
Arbuscular mycorrhizal fungi, Barley, Biomass ash, Cadmium, Fertilization, Phosphorus
in
Science of the Total Environment
volume
575
pages
1168 - 1176
publisher
Elsevier
external identifiers
  • pmid:27712871
  • scopus:85000366206
ISSN
0048-9697
DOI
10.1016/j.scitotenv.2016.09.194
language
English
LU publication?
no
additional info
Funding Information: This work was supported by the “Center for Bioenergy Recycling-ASHBACK” project, funded by the Danish Council for Strategic Research (grant no 0603-00587B ) and by the “Power Generation from Renewable Energy (GREEN)” project, funded by the Danish Agency for Science, Technology and Innovation (grant no DSF 10-093956 ). Publisher Copyright: © 2016 Elsevier B.V.
id
71f48532-3349-44c7-ae55-4c35f67f7d01
date added to LUP
2022-08-26 11:38:12
date last changed
2024-04-18 02:06:39
@article{71f48532-3349-44c7-ae55-4c35f67f7d01,
  abstract     = {{<p>Reutilizing biomass ashes in agriculture can substitute inputs of P from finite primary sources. However, recycling of ashes is disputed due to their content of toxic substances such as heavy metals. This study evaluates the potential risk of replacing easily soluble inorganic P fertilizer with P in biomass ashes in a barley crop grown on soil with adequate P status. Two contrasting doses of three different types of ashes were applied to an agricultural field with spring barley and compared to similar doses of triple-superphosphate fertilizer. In the second growing season after biomass ash application, grain, straw and root dry matter yield, and P and Cd uptake were determined. Resin-extractable P was measured in soil and the symbiotic arbuscular mycorrhizal fungal activity, colonization, and community composition were assessed. Crop yield was not affected by ash application, while P-uptake and mycorrhizal status were slightly enhanced with high ash applications. Changes to the mycorrhizal community composition were evident with high ash doses. Cadmium uptake in aboveground plant tissue was unaffected by ash treatments, but increased in roots with increasing doses. Consequently, we conclude that fertilization with biomass ashes can replace conventional fertilizers without risk to barley crops in the short term.</p>}},
  author       = {{Cruz-Paredes, Carla and López-García, Álvaro and Rubæk, Gitte H. and Hovmand, Mads F. and Sørensen, Peter and Kjøller, Rasmus}},
  issn         = {{0048-9697}},
  keywords     = {{Arbuscular mycorrhizal fungi; Barley; Biomass ash; Cadmium; Fertilization; Phosphorus}},
  language     = {{eng}},
  month        = {{01}},
  pages        = {{1168--1176}},
  publisher    = {{Elsevier}},
  series       = {{Science of the Total Environment}},
  title        = {{Risk assessment of replacing conventional P fertilizers with biomass ash : Residual effects on plant yield, nutrition, cadmium accumulation and mycorrhizal status}},
  url          = {{http://dx.doi.org/10.1016/j.scitotenv.2016.09.194}},
  doi          = {{10.1016/j.scitotenv.2016.09.194}},
  volume       = {{575}},
  year         = {{2017}},
}