PuSH - Publication Server of Helmholtz Zentrum München

Vargas Gil, S.* ; Meriles, J.* ; Conforto, C.* ; Basanta, M.* ; Radl, V.* ; Hagn, A. ; Schloter, M. ; March, G.J.*

Response of soil microbial communities to different management practices in surface soils of a soybean agroecosystem in Argentina.

Eur. J. Soil Biol. 47, 55-60 (2011)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Argentina is the world's third most important soybean producer; hence, there is an urgent need to preserve soil health by applying appropriate agricultural practices to maintain sustainable production in the upcoming years. Because productivity of agricultural systems largely depends on soil microbial processes, the influence of different management strategies on soil microbial community structure was analyzed in a long-term field trial started in 1992. The experimental design was a split-plot arrangement of treatments, consisting in two tillage treatments: zero tillage (it) and reduced tillage (RT), in combination with two crop rotation treatments: soybean monoculture (SS) and corn-soybean (CS). Phospholipid fatty acid (PLFA) profiles were used to assess total microbial community structure. Denaturing gradient gel electrophoresis (DGGE) profiles of 18S rRNA were generated to describe the influence of crop practices on fungal communities. Total PLFA content was lowest in soil under reduced tillage and soybean monoculture; therefore the use of reduced tillage-soybean monoculture in agroecosystems might produce important reductions in total microbial biomass. The structure of total microbial communities, as estimated by PLFA, was affected by crop rotation. Moreover, the fungal communities, as estimated by DGGE analysis, were influenced by combined effects of crop rotation and tillage system.
Altmetric
Additional Metrics?
[➜Log in]
Edit extra informations Login
Publication type Article: Journal article
Document type Scientific Article
Keywords PLFA; DGGE; Microorganisms; Soil health; Sustainability
ISSN (print) / ISBN 1164-5563
e-ISSN 1778-3615
Journal European Journal of Soil Biology
Quellenangaben Volume: 47, Issue: 1, Pages: 55-60 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place Paris
Reviewing status Peer reviewed
Institute(s) Comparative Microbiome Analysis (COMI)
Institute of Soil Ecology (IBOE)