The second part of the study was to validate the developed information system in a selected farming area. For the primary data, a farm survey was conducted in Sleman Regency, Yogyakarta Province. The sixty (60) household farms in 6 (six) districts were investigated which were grouped into animal based and tractor based farms.
Based on the farm survey, the results described that the total annual water surplus in the study area was 792 mm that reached from November to April and water deficit was 355 mm from May to October. There is also surplus situation of number of animal drawn and local equipment for land preparation in each district, but deficiency in number of power tiller and it’s matching tillage equipment. The sensitivity analysis indicated those yield and crop price are the most significant factor in determining the net return of the crop production system.

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