“The Effect Of Planting Distance and Dosage Of Fertilizing Cow Manage On Production Products Red Rosella (Hibiscus sabdariffa L.): Pengaruh Jarak Tanam dan Dosis Pemberian Pupuk Kandang Sapi Terhadap Hasil Produksi Rosela Merah (Hibiscus sabdariffa L.)”, PELS, vol. 2, no. 2, June 2022, doi: 10.21070/pels.v2i2.1267.