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Residues from black soldier fly (Hermetia illucens) larvae rearing influence the plant-associated soil microbiome in the short term

dc.contributor.authorFuhrmann, A.
dc.contributor.authorWilde, B.
dc.contributor.authorConz, R.F.
dc.contributor.authorKantengwa, S.
dc.contributor.authorKonlambigue, M.
dc.contributor.authorMasengesho, B.
dc.contributor.authorKintche, K.
dc.contributor.authorKassa, K.
dc.contributor.authorMusazura, W.
dc.contributor.authorSpath, L.
dc.contributor.authorGold, M.
dc.contributor.authorMathys, A.
dc.contributor.authorSix, J.
dc.contributor.authorHartmann, M.
dc.date.accessioned2022-10-19T08:25:24Z
dc.date.available2022-10-19T08:25:24Z
dc.date.issued2022-09-26
dc.identifier.citationFuhrmann, A., Wilde, B., Conz, R.F., Kantengwa, S., Konlambigue, M., Masengesho, B., ... & Hartmann, M. (2022). Residues from black soldier fly (Hermetia illucens) larvae rearing influence the plant-associated soil microbiome in the short term. Frontiers in Microbiology, 13 : 994091, 1-19.
dc.identifier.issn1664-302X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7883
dc.description.abstractThe larvae of the black soldier fly (BSFL, Hermetia illucens) efficiently close resource cycles. Next to the nutrient-rich insect biomass used as animal feed, the residues from the process are promising plant fertilizers. Besides a high nutrient content, the residues contain a diverse microbial community and application to soil can potentially promote soil fertility and agricultural production through the introduction of beneficial microbes. This research assessed the application of the residues on plant-associated bacterial and fungal communities in the rhizosphere of a grass-clover mix in a 42-day greenhouse pot study. Potted soil was amended with BSFL residues (BR+) or conventional compost (CC+) produced by Rwandan waste management companies in parallel to residues and compost sterilized (BR-, CC-) by high-energy electron beam (HEEB) as abiotic controls. The fertilizers were applied at a rate of 150  kg N  ha−1. Soil bacterial and fungal communities in both fertilizer and soil were assessed by high-throughput sequencing of ribosomal markers at different times after fertilizer application. Additionally, indicators for soil fertility such as basal respiration, plant yield and soil physicochemical properties were analyzed. Results showed that the application of BSFL residues influenced the soil microbial communities, and especially fungi, stronger than CC fertilizers. These effects on the microbial community structure could partly be attributed to a potential introduction of microbes to the soil by BSFL residues (e.g., members of genus Bacillus) since untreated and sterilized BSFL residues promoted different microbial communities. With respect to the abiotic effects, we emphasize a potential driving role of particular classes of organic matter like fiber and chitin. Indeed, especially taxa associated with decomposition of organic matter (e.g., members of the fungal genus Mortierella) were promoted by the application of BSFL residues. Soil fertility with respect to plant yield (+17% increase compared to unamended control) and basal respiration (+16% increase compared to unamended control) tended to be improved with the addition of BSFL residues. Findings underline the versatile opportunities for soil fertility arising from the application of BSFL residues in plant production and point to further research on quantification of the described effects.
dc.description.sponsorshipSwiss Agency for Development and Cooperation
dc.description.sponsorshipETH Zurich
dc.format.extent1-19
dc.language.isoen
dc.subjectHermetia Illucens
dc.subjectSoil Microorganisms
dc.subjectOrganic Fertilizers
dc.subjectPlant Growth Forms
dc.subjectCircular Economy
dc.titleResidues from black soldier fly (Hermetia illucens) larvae rearing influence the plant-associated soil microbiome in the short term
dc.typeJournal Article
cg.contributor.affiliationInstitute of Agricultural Sciences, Switzerland
cg.contributor.affiliationSingapore-ETH Centre
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationMaggot Farm Production Ltd., Rwanda
cg.contributor.affiliationArba Minch University
cg.contributor.affiliationUniversity of Kwazulu-Natal
cg.contributor.affiliationTransdisciplinary Lab, ETH Zürich
cg.contributor.affiliationSwiss Federal Institute of Aquatic Science and Technology
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryRwanda
cg.coverage.hubCentral Africa Hub
cg.identifier.bibtexciteidFUHRMANN:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPests of Plants
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.journalFrontiers in Microbiology
cg.notesOpen Access Article; Published online: 26 Sep 2022
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3389/fmicb.2022.994091
cg.iitaauthor.identifierKINTCHE Kokou: 0000-0001-5533-476X
cg.futureupdate.requiredNo
cg.identifier.volume13
cg.contributor.acknowledgementsWe want to express our gratefulness to the RUNRES project funded by the Swiss Agency for Development and Cooperation that enabled our study by providing us with the applied organic fertilizers through the two participating Rwandan bioconversion companies COPED and Maggot Farm Production Ltd. as well as the International Institute of Tropical Agriculture (IITA). We want to thank Horst Adelmann from the Laboratory of Food & Soft Materials, ETH Zurich for supporting the preparation and Conrad Günthard from LEONI Studer AG for the kind consultancy and execution of the HEEB sterilization of the fertilizers. We are grateful for the support by Brigitta Herzog, Britta Jahn-Humphrey, Elena Giuliano, Elena Kost and Tania Galindo Castaneda for their support with setting up the experiment and with physicochemical analyses of the soil. We would like to thank Matti Barthel and Astrid Jäger for their guidance on the experimental set up and on the soil respiration measurements. We thank Maria Domenica Moccia at the Functional Genomics Center Zurich (FGCZ) for providing the sequencing service on the Illumina MiSeq platform.


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