Hendri, P.H., Ibnusina, F. and Arnayulis 2025. UTILIZATION OF CASSAVA SKIN AS POC MATERIAL AND 50% NPK FOR GROWTH AND PRODUCTION OF LETTUCE (LACTUCA SATIVA L.) ON ULTISOL LAND. Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian. 9, 2 (Jun. 2025), 237–248. DOI:https://doi.org/10.32585/ags.v9i2.6405.