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Commission Européenne (CORDIS) 1992

N2-fixing woody symbioses of Kenya : research toward sustainable revegetation and enhanced soil productivity in arid and semi-arid zones

Revegetation Soil Productivity

CORDIS (Service Communautaire d’Information sur la Recherche et le Développement) Commission Européenne

Titre : N2-fixing woody symbioses of Kenya : research toward sustainable revegetation and enhanced soil productivity in arid and semi-arid zones

Pays : Kenya

Code du projet : TS3*910027 FP3-STD 3

Durée : From 1992-04-01 to 1995-03-31

Descriptif
The overall objective of this proposal is to understand how to achieve, in E. Africa, sustainable revegetation based on natural N2-inputs with optimum use of available water. It is the logical extension of our now-ending STD project in Kenya. This multidisciplinary research of tree-dominated plant communities is based on our own E. African research as well as on published work and personal communications of other experts. N and Water are the most commonly growth-limiting factors in arid areas. We propose to extend our investigations of the N and water relations of E. African forestry through a multi-disciplinary approach of : microbial, molecular, whole-plant studies (Frankia & rhizobial symbioses) and the newest tool for environmental studies,natural abundance levels of the stable isotopes of C, N, &H.
The microbial and molecular studies will lead to a better understanding and management of this N-input to ecosystems. Both rhizobia and Frankia symbioses are important N2-fixers in the arid tropics. The stable isotopes work has two main roles : (1) self-standing study of N-cycling and water relations alongside advancement in the already valuable interpretations of stable isotope signatures in nature ; and (2) a liaison and service role linking the microbial, whole plant, and ecosystems approaches, as well as evaluating the success, in nature, of microbial whole plant field trials by estimating the amounts of atmospheric N2-fixation and the water costs. The experimentation will include laboratory, glasshouse and field trials. New field plots in Scotland and Spain, analogous to Kenyan plots, add comparisons, cost-effective backups, and a newly emdhasized European dimension. Mathematical modelling will be added to the continuing isotope studies.

Participants au projet
Coordinateur : Scottish Crop Research Institute (SCRI) United Kingdom
Participants : CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS Spain ; KENYA FORESTRY RESEARCH INSTITUTE Kenya ; UNIVERSITY OF DUNDEE United Kingdom

Présentation : Commission Européenne

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