Analysis of Nutrients (N,P,K) in Bio Seeding Block Based on Sugarcane Waste Riza Rahimi Bachtiar, Ayu Purwaningtyas, Adetiya Prananda Putra and Eka Afrida Ermawati BIO Web Conf., 69 (2023) 01017 Published online: 16 October 2023 DOI: 10.1051/bioconf/20236901017