Hendri, Putri Hani, Fedri Ibnusina, 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):237-48. https://doi.org/10.32585/ags.v9i2.6405.