Integrated multivariate analysis of selected soil microbial properties and their relationships with mineral fertilization management in a conservation agriculture system

Integrated multivariate analysis of selected soil microbial properties and their relationships with mineral fertilization management in a conservation agriculture system

The effect of mineral fertilizer application on soil microbial community was investigated in a conservation agriculture system. The aim of this work was to evaluate how mineral fertilization with nitrogen (N), phosphorus (P), sulfur (S), and micronutrients (M) affects microbial community structure a...

Full description

Saved in:
Bibliographic Details
Published in:Acta agriculturae Scandinavica. Section B, Soil and plant science Vol. 63; no. 7; pp. 623 - 632
Main Authors: Verdenelli, R.A, Conforto, C.B, Pérez-Brandán, C, Chavarría, D, Rovea, A, Vargas-Gil, S, Meriles, J.M
Format: Journal Article
Language:English
Published: Abingdon Taylor & Francis 01-10-2013
Taylor & Francis LLC
Subjects:
Agriculture
Argentina
carbon
CLPP
community structure
fertilization
fertilizer application
Fertilizers
fluorescein
functional diversity
Gram-negative bacteria
Hapludolls
microbial biomass
microbial communities
microbial properties
Microbiology
monitoring
multivariate analysis
nitrogen fertilizers
phospholipid fatty acids
phosphorus
PLFA
soil microorganisms
soil treatment
sulfur
Argentina
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of mineral fertilizer application on soil microbial community was investigated in a conservation agriculture system. The aim of this work was to evaluate how mineral fertilization with nitrogen (N), phosphorus (P), sulfur (S), and micronutrients (M) affects microbial community structure and function. A 10-year experiment, conducted on a typic Hapludoll using six mineral fertilizer treatments (control, CK; PS; NS; NP; NPS; and NPSM) was evaluated in central Argentina. Microbial community structure and function were characterized by phospholipid fatty acids and community-level physiological profiles, respectively. Soil microbial metabolic activity was determined by monitoring microbial respiration, fluorescein diacetate activity (FDA), dehydrogenase activity and phosphatase activity (PHA). NPS and NPSM treatments showed higher total microbial biomass and gram-positive and gram-negative bacteria, but lower fungal biomass than the remaining treatments. Fertilizer treatments without S (CK and NP) showed lower carbon source utilization and Shannon index than the other treatments. In addition, both FDA and PHA significantly increased under NPSM. An integrated PC analysis indicated that sensitive bioindicators were significantly associated with three carbon sources, one metabolic parameter, and six fatty acid bioindicators. These results provide information about the importance of balanced fertilization with P, N, S, and M in promoting microbial biomass, metabolic activity, and functional diversity.
Bibliography:http://dx.doi.org/10.1080/09064710.2013.837193
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1651-1913
0906-4710
1651-1913
DOI:10.1080/09064710.2013.837193