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White clover improves soil aggregation: the mechanism and the impact on soil microbial diversity and N and P leaching
Reference
D15329
Principal Investigator / Supervisor
Professor David Scholefield
Co-Investigators /
Co-Supervisors
Dr Christopher Clegg
,
Dr Ann Cresswell
,
Dr Lance Mytton
,
Dr John Witty
Institution
Inst of Grassland and Environmental Res
Department
Soil Environmental and Ecological Sci
Funding type
Research
Value (£)
175,668
Status
Completed
Type
Research Grant
Start date
01/12/2001
End date
01/12/2004
Duration
36 months
Abstract
Soil structure strongly influences plant growth and agricultural sustainability. We propose a novel experimental system to study the dynamics of aggregate formation. We hypothesise: 1. Clover root contraction (a recent IGER discovery) generates the force necessary to move soil particles; 2. Increased rhizobial polysaccharide production in the presence of clover enhances soil aggregation. We will also determine the impact of improved aggregation on soil microbial diversity and activity, organic matter, and N and P leaching. Analysis of structural changes during aggregation will be made from time-lapse digital photography and from sectioned soil blocks. Information will flow to modelling and precision breeding programmes.
Summary
unavailable
Committee
Closed Committee - Agri-food (AF)
Research Topics
X – not assigned to a current Research Topic
Research Priority
X – Research Priority information not available
Research Initiative
X - not in an Initiative
Funding Scheme
X – not Funded via a specific Funding Scheme
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