Various design issues have been considered in the development of the Plant Map Analysis Program (PMAP) for personal computers. The main emphasis was given to the power to analyze the collected field data, backward compatibility support for old data, ease of use, and better integrability with other component software of an Integrated Crop Management System (ICM). A version of the software program was implemented under the Microsoft Windows platform for IBM compatible personal computers. The Windows 95 compatible version is currently under construction.