Desorption of mineral-bound phosphorus across different cropping systems and agronomic strategies to promote efficient input use
Almeida, Juan Pablo LU ; Roobroeck, Dries ; Mårtensson, Linda Maria Dimitrova LU ; Rosero, Pedro LU
; Kimutai, Geoffrey
; Kätterer, Thomas
and Wallander, Håkan
LU
(2024)
In Applied Soil Ecology
203.
- Abstract
Phosphorus (P) is a limiting nutrient to production in various agricultural ecosystems and many soils contain large amounts of legacy P that is strongly adsorbed on iron (Fe) and aluminum oxides and therefore poorly available to plants. Here we investigate how much mineral-bound P is mobilized in different cropping systems and the influence of agronomic practices on this process. Root ingrowth cores filled with a mix of sand and P-saturated goethite were incubated in the topsoil of: 1) sugar beet in Sweden under sufficient or deficient P additions, 2) perennial Kernza (Thinopyrum intermedium) in Sweden as monoculture or intercropped with Alfalfa with organic management, contrasted to annual winter wheat with inorganic fertilization, and... (More)
Phosphorus (P) is a limiting nutrient to production in various agricultural ecosystems and many soils contain large amounts of legacy P that is strongly adsorbed on iron (Fe) and aluminum oxides and therefore poorly available to plants. Here we investigate how much mineral-bound P is mobilized in different cropping systems and the influence of agronomic practices on this process. Root ingrowth cores filled with a mix of sand and P-saturated goethite were incubated in the topsoil of: 1) sugar beet in Sweden under sufficient or deficient P additions, 2) perennial Kernza (Thinopyrum intermedium) in Sweden as monoculture or intercropped with Alfalfa with organic management, contrasted to annual winter wheat with inorganic fertilization, and 3) soybean grown in a P-fixing soil in Kenya with or without fertilizer and biochar addition. After one growing season, desorption was evaluated based on the amount of P that remained in the goethite and its ratio with Fe. Possible relationships between the rate of P desorption and abundance of arbuscular mycorrhizal fungi (AMF) were explored by profiling phospholipid fatty acid (PLFA) and neutral lipid fatty acid (NLFA) biomarkers in the sand-goethite mixture collected from the cores. Significant P desorption was found in the rhizosphere of sugar beets under deficient P supply but not in bulk sand-goethite mixture. No P desorption was observed in Kernza as monocrop or intercropped with alfalfa, nor winter wheat. Soybeans had a strong ability to desorb P under all nutrient regimes but significantly more when no fertilizer was applied. In the soybean experiment a significant positive relationship was found between P removal rates and abundance of AMF. These results indicate that strategies for downregulating P application rates and promoting crop-AMF association can be a viable avenue to mobilize legacy P and help make more efficient use of nutrient inputs. At the same time, cropping systems and soil conditions have an overriding influence on the potential P desorption and must therefore be carefully considered during implementation.
(Less)
- author
- Almeida, Juan Pablo
LU
; Roobroeck, Dries
; Mårtensson, Linda Maria Dimitrova
LU
; Rosero, Pedro
LU
; Kimutai, Geoffrey
; Kätterer, Thomas
and Wallander, Håkan
LU
- organization
- publishing date
- 2024-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Arbuscular mycorrhizal fungi, Goethite, Kernza, Legacy P, PLFA, Soybean
- in
- Applied Soil Ecology
- volume
- 203
- article number
- 105672
- publisher
- Elsevier
- external identifiers
-
- scopus:85205548105
- ISSN
- 0929-1393
- DOI
- 10.1016/j.apsoil.2024.105672
- language
- English
- LU publication?
- yes
- id
- 864a2737-a3bb-430c-924a-55503c59e7ca
- date added to LUP
- 2024-11-27 14:26:53
- date last changed
- 2025-06-10 13:40:38
@article{864a2737-a3bb-430c-924a-55503c59e7ca,
abstract = {{<p>Phosphorus (P) is a limiting nutrient to production in various agricultural ecosystems and many soils contain large amounts of legacy P that is strongly adsorbed on iron (Fe) and aluminum oxides and therefore poorly available to plants. Here we investigate how much mineral-bound P is mobilized in different cropping systems and the influence of agronomic practices on this process. Root ingrowth cores filled with a mix of sand and P-saturated goethite were incubated in the topsoil of: 1) sugar beet in Sweden under sufficient or deficient P additions, 2) perennial Kernza (Thinopyrum intermedium) in Sweden as monoculture or intercropped with Alfalfa with organic management, contrasted to annual winter wheat with inorganic fertilization, and 3) soybean grown in a P-fixing soil in Kenya with or without fertilizer and biochar addition. After one growing season, desorption was evaluated based on the amount of P that remained in the goethite and its ratio with Fe. Possible relationships between the rate of P desorption and abundance of arbuscular mycorrhizal fungi (AMF) were explored by profiling phospholipid fatty acid (PLFA) and neutral lipid fatty acid (NLFA) biomarkers in the sand-goethite mixture collected from the cores. Significant P desorption was found in the rhizosphere of sugar beets under deficient P supply but not in bulk sand-goethite mixture. No P desorption was observed in Kernza as monocrop or intercropped with alfalfa, nor winter wheat. Soybeans had a strong ability to desorb P under all nutrient regimes but significantly more when no fertilizer was applied. In the soybean experiment a significant positive relationship was found between P removal rates and abundance of AMF. These results indicate that strategies for downregulating P application rates and promoting crop-AMF association can be a viable avenue to mobilize legacy P and help make more efficient use of nutrient inputs. At the same time, cropping systems and soil conditions have an overriding influence on the potential P desorption and must therefore be carefully considered during implementation.</p>}},
author = {{Almeida, Juan Pablo and Roobroeck, Dries and Mårtensson, Linda Maria Dimitrova and Rosero, Pedro and Kimutai, Geoffrey and Kätterer, Thomas and Wallander, Håkan}},
issn = {{0929-1393}},
keywords = {{Arbuscular mycorrhizal fungi; Goethite; Kernza; Legacy P; PLFA; Soybean}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Applied Soil Ecology}},
title = {{Desorption of mineral-bound phosphorus across different cropping systems and agronomic strategies to promote efficient input use}},
url = {{http://dx.doi.org/10.1016/j.apsoil.2024.105672}},
doi = {{10.1016/j.apsoil.2024.105672}},
volume = {{203}},
year = {{2024}},
}