Sewage sludge biochar alters root colonization of mycorrhizal fungi in a soil cultivated with corn

de Figueiredo, C, Farias, W, Coser, T, de Paula, A, Da Silva, M and Paz-Ferreiro, J 2019, 'Sewage sludge biochar alters root colonization of mycorrhizal fungi in a soil cultivated with corn', European Journal of Soil Biology, vol. 93, pp. 1-6.


Document type: Journal Article
Collection: Journal Articles

Title Sewage sludge biochar alters root colonization of mycorrhizal fungi in a soil cultivated with corn
Author(s) de Figueiredo, C
Farias, W
Coser, T
de Paula, A
Da Silva, M
Paz-Ferreiro, J
Year 2019
Journal name European Journal of Soil Biology
Volume number 93
Start page 1
End page 6
Total pages 6
Publisher Elsevier Masson
Abstract SAS Sewage sludge biochar (SSB) has demonstrated a large potential to improve soil quality, availability of nutrients, particularly phosphorus (P), and increase crop productivity. There is a lack of information on the effect of P from SSB on the soil microbiota, especially on arbuscular mycorrhizal fungi. Six treatments were arranged in randomized blocks, with four replicates: 1) Control - without any amendments; 2) Mineral fertilization with NPK; 3) Biochar prepared at 300 °C (BC300); 4) Biochar prepared at 500 °C (BC500); 5) BC300 + NPK; 6) BC500 + NPK. Amendments were applied in two consecutive harvests. Microbial biomass carbon (MBC), percentage of mycorrhizal colonization (MC) and easily extractable glomalin-related soil protein (EEG) of soil mycorrhizal fungi were evaluated in all treatments. Amendment with BC300 resulted in an increase in MBC, while all treatments resulted in an increase in the colonization of corn roots by AMF. Consequently, SSB stimulated the synthesis and excretion of EEG from the soil. Biochar, NPK mineral fertilizer and their combinations increased MC in corn compared to the control. However, no additive effects of SSB and NPK addition were observed.
Subject Environmental Engineering not elsewhere classified
Keyword(s) Arbuscular mycorrhizal fungi
Glomalin
Microbial diversity
Pyrolysis
Soil microbial biomass
DOI - identifier 10.1016/j.ejsobi.2019.103092
Copyright notice © 2019 Elsevier Masson
ISSN 1164-5563
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