IAALD AFITA WCCA2008 WORLD CONFERENCE ON AGRICULTURAL INFORMATION AND IT Prefarm Solution - MapServer as a Services Support Tool for Farmers to Make Fast Decision in Crop Production, Precision Farming System Pavel Gnip 1 , Stepan Kafka 2 , Karel Charvat 1 and Stanislav Holy 2 1 WirelessInfo, Czech Republic, gnip@wirelessinfo.cz 2 Help Service Remote Sensing, Czech Republic Abstract The system of Precision farming guarantees a detail monitoring of data and information, which are necessary for successful decision in crop production. The system is designed for data collection from several sources. The data are collected by Service Company and farmers mainly, but also labs, Research institutes or University can be also involved. Difficulties of technologies, which are currently and continually involved in this system, argue against its practical using system by farmers. Service Company wants to create a suitable environment not only for data collection, but also for the high quality of the information distribution to customers. First of all, data exchange between Service Company and each farm individually must be built on powerful tool and environment. One of such tools is the PREFARM MapServer placed on Internet web site. PREFARM Mapserver is developed and build to help the farmers to make a right decision on collected data and information. Above mentioned tools can be used by farmers with different computer scale. According to that, Service Company is more or less involved to farmer support and decision making system on the crop production. Keywords: Precision farming, MapServer, GIS, PREFARM, GPS data collection, Decision making system Material and Methods Technology of Precision farming guarantees a success of this system in the market. Difficulties of technologies, which are currently and continually involved in this system, argue against its practical using by farmers. In this case, Service Company wants to offer a suitable environment not only for data collection, data processing, but also for the high quality of other information related with farm management and crop production. The practical distribution of result to customers helps them ensure a variable application of result on the field. The most important part of services is a technology of data collection, system of data processing. Remote sensing, crop scanning and soil sampling for management zones classification means presentation for farmers or other users the simplification of the difficult operations and recommendations including economic calculations. Professional service on the market in this area using a follow tools: • navigation system GPS with or without Differential GPS • environment of Geographic information system (GIS) • internet as a tool for data transport, data presentation, • map server technology, web mapping services (wms / raster) 423