This study was conducted to analyze the elasticity of cassava farming production factors that use and do not use Cassava NPK fertilizer 17-6-25 in Banjar Margo District, Tulang Bawang Regency, Lampung Province. Cassava NPK Fertilizer contains a special formula consisting of 17% Nitrogen (N), 6% Phosphate (P), and 25% Potassium (K). Potassium is higher than standard NPK fertilizers are essential…