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Mycorrhizal effects on nutrient cycling, nutrient leaching and N2O production in experimental grassland
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID 2747979
Author(s) Bender, S. Franz; Conen, Franz; Van der Heijden, Marcel G. A.
Author(s) at UniBasel Conen, Franz
Year 2014
Title Mycorrhizal effects on nutrient cycling, nutrient leaching and N2O production in experimental grassland
Journal Soil biology & biochemistry
Volume 80
Pages / Article-Number 283-292
Keywords Arbuscular mycorrhizal fungi, Nitrous oxide, Nitrogen, Phosphorous, Resource efficiency, Agriculture, Organic N, Unreactive P
Abstract Arbuscular mycorrhizal fungi (AMF) can enhance plant nutrition and growth. However, their contribution to nutrient cycling in ecosystems is still poorly understood. Using experimental grassland microcosms filled with two different soil types (pasture and heath soil) and fertilized with different N forms (NO3- or NH4+) we tested the AMF contribution to N and P cycling including measurements of organic and inorganic leaching losses and N2O fluxes. We hypothesized that AMF enhance the sustainability of plant-soil systems by reducing nutrient losses and enhancing plant nutrient uptake. AMF reduced reactive and unreactive P leaching by 31%, enhanced plant P contents by 15% and increased P mobilization from soil by 18%. AMF reduced N2O fluxes and NH4+ leaching in both soils. Leaching of dissolved organic N was reduced by 24% in the heath soil only. Plant N contents were increased by 13% in the pasture soil but not affected in the heath soil. The microbial biomass N content was higher with AMF. This is the first comprehensive assessment of the influence of AMF on N and P cycling, including effects on inorganic and organic nutrient leaching losses and N2O emissions in a single study. We conclude that AMF can promote sustainable nutrient cycling but the effects on N cycling are context dependent. (C) 2014 Elsevier Ltd. All rights reserved.
Publisher Pergamon Press
ISSN/ISBN 0038-0717
Full Text on edoc No
Digital Object Identifier DOI 10.1016/j.soilbio.2014.10.016
ISI-Number WOS:000346545800033
Document type (ISI) Article

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