This paper presents an efficient, practical and accurate information system showing how to use some promising new technology. An agricultural information system can be built on objective ground-based data and combined with LANDSAT data to increase the precision of statistics for large areas and also generate local data. The results or statistics produced will be defensible and the accuracy can be stated if care is taken to follow strictly the laws of probability. Resource requirements vary depending on accuracy levels needed. However, the system combines ground-based and LANDSAT data in a flexible manner depending on materials, equipment available, expertise and experience of personnel involved. The construction of an area sampling frame in the country is assumed to have preceded the time when sampling for making crop estimates will be undertaken.