Inna, F., Krisdhianto, A. and Yaqin, M.A. 2023. Pengaruh Pupuk Organik Limbah Sayuran dan Buah Terhadap Produktivitas Tanaman Jahe Merah (Zingiber Oficinale var. rubrum) Sebagai Sumber Belajar Mata Kuliah Ekologi : The Effect of Organic Fertilizer from Vegetable and Fruit Waste on the Productivity of Red Ginger Plants (Zingiber Oficinale var. Rubrum) as a Learning Resource for Ecology Courses. JERNIH : Journal of Environmental Engineering and Hygiene. 1, 01 (Jul. 2023), 01–11. DOI:https://doi.org/10.31537/jernih.v1i01.1087.