Madagascar EcosolsEco&Sols is hosted by the Radioisotope Laboratory (LRI) at the University of Antananarivo.

The three research themes of Eco&Sols are studied in Madagascar in various farming systems: direct drilled rice crops, agroforestry systems, etc.

The LRI has the equipment required for routine soil analyses: soil preparation, soil sample library and standard texture, organic matter, mineral N, pH and CEC analyses, using continuous flow analysis and atomic absorption spectroscopy. It also has a diffuse reflectance (mid-)infrared fourier transform spectroscope (DRIFT) and a microcatharometer for gas analysis (CO2, N2O, CH4).

The LRI also has a soil biology laboratory for extracting, observing and handling the various soil organisms: bacteria, microfauna, macrofauna.

Equipment for particle size and densitometric separation and for soil incubation to measure microbial activity is available, as well as a greenhouse for plant trials.

A 32P measurement system, approved by the International Atomic Energy Agency (AIEA), is available for isotope dilution analysis.

Research projects



Andriamananjara A., Morel C., Rabeharisoa L., Masse D. and Drevon J-J. (2015) Genotypic variation of Vigna subterranea for phosphorus availability in rhizotron experiment. Soumis à Journal of Plant Nutrition and Soil Science

Bernard L., Chapuis-Lardy L., Razafimbelo T., Razafindrakoto M., Pablo A.L., Legname E., Poulain J., Brüls T., O’Donohue M., Brauman A., Chotte J.L. & Blanchart E. (2012) Endogeic earthworms shape bacterial functional communities and affect organic matter mineralization in a tropical soil. The ISME Journal, 6 : 213-222.


Jean-Pierre Bouillet (This email address is being protected from spambots. You need JavaScript enabled to view it.) CIRAD

Direction Régionale du Cirad, Ampandrianomby, BP 853, Antananarivo 101, MADAGASCAR

Tel: (+261) 20 22 406 23 ; Fax: (+261) 20 22 408 21



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