Pengaruh Konsentrasi Em4 Terhadap Kualitas Pupuk Organik Cair Limbah Jeruk Se…

This research aims to develop Electronic Student Worksheets (E-LKPD) on conventional biotechnology topics, focusing on the production of liquid organic fertilizer (POC) from squeezed orange waste. Conducted from June 2022 to February 2023 at the Soil Laboratory of the Faculty of Agriculture, University of Riau, the resulting E-LKPD can serve as a teaching material for 12th-grade high school stu…