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Evaluation et utilisation de la biodiversité des microsymbiotes de "Calliandra Calothyrsus" pour optimiser la production fourragère au sein de peti tes exploitations agricoles en zone tropicale humide

Objective

The main objective of the project is to optimize the forage production of C. calothyrsus on small farms by inoculation with highly efficient strains of rhizobia and/or mycorrhiza strains selected under laboratory, greenhouse and field conditions. In order to achieve this objective we will investigate the main symbiotic characteristics of C. calothyrsus, evaluate a range of potential inocula, and attempt to produce a suitable microbial inoculum for inoculating plants under field conditions.
Expected Outcome

The participating research organizations will be able to produce and dispense selected strains of microsymbionts suitable for use on farms in order to increase forage production. Researchers involved in the project from both European and third country institutes will have the opportunity to train in technical areas, such as inoculum production, and in scientific areas, such as survey of the biodiversity of rhizobia strains and study the persistence of rhizobia after inoculation in soil.
Research activities are concentrated in two main areas :
1. Collection of microsymbionts of C. calothyrsus. The project will establish a large collection of rhizobia and mycorrhiza isolated respectively from the nodules and roots of this species harvested in its native range (Honduras, Costa Rica and Mexico), and in humid countries where it has been successfully introduced (Cameroon, Kenya and New Caledonia). After evaluation of the biodiversity within the collection of microsymbionts, a symbiotic screening will be carried out in the laboratory and greenhouse in order to select the most efficient strains for inoculation under field conditions.
2. Field inoculation of C. calothyrsus. Existing methodologies for producing rhizobial inoculum and inoculating plants under field conditions will be developed further for inoculation in field stations, and finally, under farm conditions.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

CENTRE DE COOPERATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DEVELOPPEMENT - CIRAD
Address
Avenue De La Belle Gabrielle 45 Bis
34032 Montpellier
France

Participants (5)

Institut de la Recherche Agricole pour le developpement
Cameroon
Address

Yaounde
Kenya Forestry Research Institute
Kenya
Address

2 Nairobi
NATURAL ENVIRONMENT RESEARCH COUNCIL
United Kingdom
Address
C/o Bush Estate
EH26 0QB Penicuik
THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD
United Kingdom
Address
South Parks Road University Of Oxford
OX1 3RA Oxford
UNIVERSITY OF HELSINKI
Finland
Address
9,Viikinkaari 9, Biocenter 1A
00014 Helsinki