Unti recently, Agriculture has been the primary industry of Delongo. Today, it remains one of the largest sectors.
Agricultural production can be loosely traced back to the Euylize who harvested from the Euylize Forest before it was declared divine.
The Rupertland island was chosen as a major settlement partly because of its fantastic agricultural land value, which remains to this day. Over half of the land is used for agricultural production, especially wine, corn, vegetables, fruits, and grain.