Cirad specialises in tropical agriculture. The AMIS Department of CIRAD is dedicated to Advanced Method for Innovation in Science. CIRAD-AMIS has six programmes generating the basic knowledge and methods required to master complex scientific objectives in response to development issues covered by other CIRAD programmes. The Agronomy programme is part of CIRAD AMIS. It provides scientific support, including appropriate research tools and complementary expertise to development projects. It conducts basic and strategic agronomic research on tropical production systems. It develops diagnostic tools and decision-making aids, and provides the necessary support to partner organizations in using those tools and aids. Technical personnel involved in the proposal have a thorough knowledge in soil fertility and crop physiology.
Dr Henri Calba and Dr Francis Ganry, responsible for work package 12 and 2, work on chemical processes in tropical soils, such as acidification, and their effects, such as aluminium toxicity in view of quantifying and predicting long-term changes, with the assistance of a junior scientist. They study and model these processes in close collaboration with Dr Benoît Jaillard from the department of agronomy and soil science of INRA Montpellier, who is conducting a long-term experiment in this field.
Dr Michael Dingkuhn and Jean-Louis Chopart are responsible for work package 2 which develops field-based scientific tools to characterize the physiological condition of the crop and its interaction with the environment. Their contribution can build on a broad-based eco-physiological research capacity present in the ECOTROP team, which is part of CIRAD's agronomy program and is headed by M. Dingkuhn.
Calba H; Cazevieille P; Jaillard B 1999. Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate. Plant and Soil, 209(1): 57-69.
Chopart J L and Siband P 1999. Development and validation of a model to describe root length density of maize from root counts on soil profiles. Plant and Soil (in press).
Calba H; Jaillard B 1997. Effect of aluminium on ion uptake and H+ release by maize. New Phytologist, vol. 137, p. 607-616.
Dingkuhn, M., M.P. Jones, D.E. Johnson, A. Sow. 1998. Growth and Yield potential of Oryza sativa and O. glaberrima Upland Rice Cultivars and their Interspecific Progenies. Field Crops Res. 57, 57-69.
Pintro J; Calba H; Fallavier P; Barloy J 1998. Effect of different calcium and sulphate concentrations in nutrient solutions on ionic strength value, aluminium activity, and root growth of maize plants. Journal of Plant Nutrition. 21 (11), p.2381-2387.
Courtaillac N., Ganry F., Baran R., Oliver R., Casabianca H. 1997. Efficiency of nitrogen fertilizer in the sugarcane-vertisol system in guadeloupe according to growth and ratoon age of the cane. Nutrient Cycling in Agroecosystem, 52, 9-17.
Dingkuhn, M. 1996. Modelling concepts for the phenotypic plasticity of dry matter and nitrogen partitioning in rice. Agric. Syst. 52, 383-397.
Dingkuhn, M., P.-Y. Le Gal. 1996. Effect of drainage date on yield and dry matter partitioning in irrigated rice. Field Crops Res. 46, 117-126.