Kecepatan Pelepasan Urea dari Controlled Release Fertilizer (CRF): Pengaruh Rasio Carboxymethylcellulose (CMC) – Karagenan - Sperisa Distantina; Rara Ayu Lestary; Laili Nurin Jazlina (Prosiding Seminar Nasional Teknik Kimia "Kejuangan", 2018)