Kuswardina, A. and Abror, M. 2023. Effect of Application of Liquid Organic Fertilizer of Pineapple Peel Waste on Growth and Production of Red Lettuce Plants (Lactuca sativa var. Crispa): Pengaruh Aplikasi Pupuk Organik Cair Limbah Kulit Nanas Terhadap Pertumbuhan Dan Produksi Tanaman Selada Merah (Lactuca sativa var. Crispa). Procedia of Engineering and Life Science. 4, (Jul. 2023). DOI:https://doi.org/10.21070/pels.v4i0.1404.