ABSTRACT This manual explains how to use the "Sugarcane Stubble Replacement Analysis" and "Mechanical Sugarcane Harvester Analysis" microcomputer programs. The "Sugarcane Stubble Replacement Analysis" calculates expected returns for both ratoon and replant decisions. The "Mechanical Sugarcane Harvester Analysis" calculates the minimum number of acres necessary to justify owning a mechanical harvester. Keywords: Sugarcane, Stubble Replacement, Mechanical Harvester, Microcomputer