Abstract
A simulation model for farmwork was constructed, and then a simulation program was developed based on this model. A simulation program was implemented on a sever as a web application on the Internet, for the purpose of a farmers' widely use. The characteristics of this program can be summarized as follows;
1) The data for simulation can be prepared by a template data.
2) The farmwork database for simulation are provided through the Internet.
The trial examinations were able to be carried out on several year conditions for variable farming systems. This simulation program is expected to be used for the establishment in double cropping farming systems of rice-barley/wheat and barley/wheat-soybean production.
