Impact of arbuscular mycorrhizal fungi and earthworms on soil aggregate stability, glomalin, and performance of pigeonpea, Cajanus cajan

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cg.contributor.affiliationInternational Center for Tropical Agricultureen
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierMirjam Pulleman: 0000-0001-9950-0176en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1071/sr18096en
cg.isijournalISI Journalen
cg.issn1838-675Xen
cg.issue1en
cg.journalSoil Researchen
cg.reviewStatusPeer Reviewen
cg.subject.ciatSOIL INFORMATIONen
cg.volume57en
dc.contributor.authorMuchane, Mary N.en
dc.contributor.authorPulleman, Mirjam Margreeten
dc.contributor.authorVanlauwe, Bernarden
dc.contributor.authorJefwa, Joyceen
dc.contributor.authorKuyper, Thomas W.en
dc.date.accessioned2019-01-18T14:55:51Zen
dc.date.available2019-01-18T14:55:51Zen
dc.identifier.urihttps://hdl.handle.net/10568/99109
dc.titleImpact of arbuscular mycorrhizal fungi and earthworms on soil aggregate stability, glomalin, and performance of pigeonpea, Cajanus cajanen
dcterms.abstractEarthworms and arbuscular mycorrhizal fungi (AMF) modify soil physical and chemical properties. However, little is known about how their interactions affect water-stable aggregation, glomalin and crop performance. A greenhouse experiment was run for 9 months to test the effects of earthworms (endogeic, Pontoscolex corethrurus; and epigeic, Dichogaster bolaui) and AMF (none, Glomus etunicatum and Scutellospora verrucosa) on water-stable aggregation, glomalin levels in aggregate size classes and crop performance. The test crop was pigeonpea (Cajanus cajan (L.) Millsp.). The soil material used for the experiment was a humic nitisol from central Kenya mixed with sand (ratio 1:1). Grass residue (equivalent to 20tha–1) was placed on top. The AMF root colonisation and external hyphal length, water-stable macroaggregates and microaggregates, total and easily-extractable glomalin in aggregate size classes, plant biomass and plant N and P uptake were measured. Earthworms were a major source of variation for soil aggregation, glomalin content and crop performance. The epigeic earthworms (D. bolaui) increased the amount of water-stable macroaggregates (by 10%) and glomalin in microaggregates and improved crop (growth and biomass) performance. The endogeic earthworms (P. corethrurus) reduced external hyphal length, root colonisation and crop performance but had no effect on water-stable aggregates and glomalin levels in in aggregate size classes. A significant AMF×earthworm interaction was observed for plant biomass and concentrations of nitrogen (N) and phosphorus (P). The AMF species together with epigeic earthworms increased plant biomass and N and P concentrations. Our results contribute to the understanding of interactions between AMF and earthworms in relation to soil aggregation, plant productivity and nutrient uptake.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationMuchane, Mary N.; Pulleman, Mirjam M.; Vanlauwe, Bernard; Jefwa, Joyce & Kuyper, Thomas W. (2018). Impact of arbuscular mycorrhizal fungi and earthworms on soil aggregate stability, glomalin, and performance of pigeonpea, Cajanus cajan. Soil Research, 1–13 p.en
dcterms.extent1-13 p.en
dcterms.issued2019en
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherCSIRO Publishingen
dcterms.subjectsoilen
dcterms.subjectsoil fertilityen
dcterms.subjectcajanus cajanen
dcterms.subjectmycorrhizaeen
dcterms.subjectsoil structureen
dcterms.typeJournal Article

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