Hidden miners – the roles of cover crops and soil microorganisms in phosphorus cycling through agroecosystems

Hallama, Moritz; Pekrun, Carola; Lambers, Hans; Kandeler, Ellen

Hidden miners – the roles of cover crops and soil microorganisms in phosphorus cycling through agroecosystems

dc.contributor.author	Hallama, Moritz	de
dc.contributor.author	Pekrun, Carola	de
dc.contributor.author	Lambers, Hans	de
dc.contributor.author	Kandeler, Ellen	de
dc.date.accessioned	2024-04-08T08:57:24Z
dc.date.available	2024-04-08T08:57:24Z
dc.date.created	2019-05-15
dc.date.issued	2019
dc.description.abstract	Background Phosphorus (P) is a limiting nutrient in many agroecosystems and costly fertilizer inputs can cause negative environmental impacts. Cover crops constitute a promising management option for sustainable intensification of agriculture. However, their interactions with the soil microbial community, which is a key driver of P cycling, and their effects on the following crop, have not yet been systematically assessed. Scope We conducted a meta-analysis of published field studies on cover crops and P cycling, focusing on plant-microbe interactions. Conclusions We describe several distinct, simultaneous mechanisms of P benefits for the main crop. Decomposition dynamics, governed by P concentration, are critical for the transfer of P from cover crop residues to the main crop. Cover crops may enhance the soil microbial community by providing a legacy of increased mycorrhizal abundance, microbial biomass P, and phosphatase activity. Cover crops are generally most effective in systems low in available P, and may access ‘unavailable’ P pools. However, their effects on P availability are difficult to detect by standard soil P tests, except for increases after the use of Lupinus sp. Agricultural management (i.e. cover crop species selection, tillage, fertilization) can improve cover crop effects. In summary, cover cropping has the potential to tighten nutrient cycling in agricultural systems under different conditions, increasing crop P nutrition and yield.	en
dc.identifier.swb	1671853911
dc.identifier.uri	https://hohpublica.uni-hohenheim.de/handle/123456789/6391
dc.identifier.urn	urn:nbn:de:bsz:100-opus-16184
dc.language.iso	eng
dc.rights.license	cc_by	en
dc.rights.license	cc_by	de
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/de/
dc.subject	Conservation agriculture	en
dc.subject	Nutrient cycling	en
dc.subject	Plant-microbial interactions	en
dc.subject	Sustainable intensification	en
dc.subject	P-mobilization	en
dc.subject.ddc	630
dc.subject.gnd	Nährstoffkreislauf	de
dc.subject.gnd	Phosphor	de
dc.subject.gnd	Phosphorkreislauf	de
dc.subject.gnd	Bodenmikrobiologie	de
dc.subject.gnd	Bodenmikroorganismus	de
dc.subject.gnd	Zwischenfrucht	de
dc.subject.gnd	Fruchtfolge	de
dc.subject.gnd	Mobilisation <Bodenchem	de
dc.title	Hidden miners – the roles of cover crops and soil microorganisms in phosphorus cycling through agroecosystems	de
dc.type.dcmi	Text	de
dc.type.dini	WorkingPaper	de
local.access	uneingeschränkter Zugriff	en
local.access	uneingeschränkter Zugriff	de
local.bibliographicCitation.publisherPlace	Universität Hohenheim	de
local.faculty.number	2	de
local.institute.number	310	de
local.opus.number	1618
local.university	Universität Hohenheim	de
local.university.faculty	Faculty of Agricultural Sciences	en
local.university.faculty	Fakultät Agrarwissenschaften	de
local.university.institute	Institute for Soil Science and Land Evaluation	en
local.university.institute	Institut für Bodenkunde und Standortslehre	de

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