TY - JOUR

T1 - Steering microbiomes by organic amendments towards climate-smart agricultural soils

AU - Brenzinger, Kristof

AU - Costa, Ohana Y.A.

AU - Ho, Adrian

AU - Koorneef, Guusje

AU - Robroek, Bjorn

AU - Molenaar, Douwe

AU - Korthals, Gerard

AU - Bodelier, Paul L.E.

N1 - Funding Information: We thank Dr. Susanne Brenzinger for helping with the creation of Fig. 6. We are grateful to Iris Chardon, Agata Pijl, and Hans Zweers for their excellent technical assistance. We thank Jeroen van Lanen (Van Iersel Compost, The Netherlands) for providing us with the compost, Phillipe Packbier (Joordens company, The Netherlands) for providing us with the CC residues, Rob Verheijn (Vallei Veluwe, The Netherlands) for providing us with the sewage sludge, and Rommie van der Weide and Sjaak van Brugge (ACRRES, The Netherlands) for providing us with digestate. Thankfully, Dr. Emilia Hannula provided us a database of fungal pathogens. Sander van Acqouij and Anna-Reetta Salonen for experimental help with wet sieving to determine aggregate fractions. We thank Prof. Dr. Rob van Spanning for fruitful discussion about our data. This publication is publication number 7285 of the Netherlands Institute of Ecology (NIOO-KNAW). Funding Information: KB is financially supported by the grant from the German DFG BR 5535/1–1 and by a grant from the Dutch Research Council (NOW) number 870.15.073.

PY - 2021/11

Y1 - 2021/11

N2 - We steered the soil microbiome via applications of organic residues (mix of cover crop residues, sewage sludge + compost, and digestate + compost) to enhance multiple ecosystem services in line with climate-smart agriculture. Our result highlights the potential to reduce greenhouse gases (GHG) emissions from agricultural soils by the application of specific organic amendments (especially digestate + compost). Unexpectedly, also the addition of mineral fertilizer in our mesocosms led to similar combined GHG emissions than one of the specific organic amendments. However, the application of organic amendments has the potential to increase soil C, which is not the case when using mineral fertilizer. While GHG emissions from cover crop residues were significantly higher compared to mineral fertilizer and the other organic amendments, crop growth was promoted. Furthermore, all organic amendments induced a shift in the diversity and abundances of key microbial groups. We show that organic amendments have the potential to not only lower GHG emissions by modifying the microbial community abundance and composition, but also favour crop growth-promoting microorganisms. This modulation of the microbial community by organic amendments bears the potential to turn soils into more climate-smart soils in comparison to the more conventional use of mineral fertilizers.

AB - We steered the soil microbiome via applications of organic residues (mix of cover crop residues, sewage sludge + compost, and digestate + compost) to enhance multiple ecosystem services in line with climate-smart agriculture. Our result highlights the potential to reduce greenhouse gases (GHG) emissions from agricultural soils by the application of specific organic amendments (especially digestate + compost). Unexpectedly, also the addition of mineral fertilizer in our mesocosms led to similar combined GHG emissions than one of the specific organic amendments. However, the application of organic amendments has the potential to increase soil C, which is not the case when using mineral fertilizer. While GHG emissions from cover crop residues were significantly higher compared to mineral fertilizer and the other organic amendments, crop growth was promoted. Furthermore, all organic amendments induced a shift in the diversity and abundances of key microbial groups. We show that organic amendments have the potential to not only lower GHG emissions by modifying the microbial community abundance and composition, but also favour crop growth-promoting microorganisms. This modulation of the microbial community by organic amendments bears the potential to turn soils into more climate-smart soils in comparison to the more conventional use of mineral fertilizers.

KW - Agricultural soils

KW - Flux measurements

KW - Greenhouse gases

KW - Microbial community abundance and compositions

KW - Organic amendment

KW - Plant growth

UR - http://www.scopus.com/inward/record.url?scp=85115666213&partnerID=8YFLogxK

U2 - 10.1007/s00374-021-01599-5

DO - 10.1007/s00374-021-01599-5

M3 - Article

AN - SCOPUS:85115666213

VL - 57

SP - 1053

EP - 1074

JO - Biology and fertility of soils

JF - Biology and fertility of soils

SN - 0178-2762

IS - 8

ER -