Kuswardina A, Abror M. 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). PELS [Internet]. 2023 Jul. 18 [cited 2025 Jun. 27];4. Available from: https://pels.umsida.ac.id/index.php/PELS/article/view/1404