This study aims to analyze the technical and allocative efficiency of cassava farming that does not use NPK fertilizer 17-6-25 Pusri in Banjar Margo District, Tulang Bawang Regency, Lampung Province, using the Data Envelopment Analysis (DEA) approach with an input-oriented model and the assumption of Variable Return to Scale (VRS). The analysis of 40 respondents shows that most cassava farmers …