The main aims of this mission were to improve the data processing system for oil palm experimental data management and exploitation, installed in the Marihat microcomputers since April 1988, and study of various statistical problems concerning experimental design and statistical analysis of data. The new Statpalm software developed with a view to total management of oil palm experimental data, along with their statistical analysis based on conventional methods was installed in the microcomputers at the station. This software, which was tested on several Marihat experiments, gave satisfactory results. It will make it possible, in the near future, to completely replace the programs used on the old Wang 2200 computer. The problems relative to experiments and biometry were discussed at a meeting attended by representatives from all the departments. The subjects broached involved the parameters determining the power of experiments, the methods used to increase this power and the experimental designs making it possible to calculate response curves and surfaces. Finally, there were several demonstrations of the DF software on Marihat agronomical data. This software, developed by Irho, enables microcomputer management of the data used in mineral nutrition monitoring on commercial oil palm plantations and the automatic computation of recommendations for the fertilizers to be applied.