Brismartyansa Yudha Pamungkas Pengarang

Pengaruh Kombinasi Dosis Pupuk Nitrogen, Fosfor, dan Kalium terhadap Produksi Tanaman Rosella Bunga Merah (Hibiscus sabdariffa L.) Effect of Combination of Nitrogen, Phosphorus, and Potassium Fertilizer Doses on Rosella Red Flower Plant (Hibiscus sabdariffa L.) Production Advisor: Ir. Abdul Madjid, MP and Ir. Ujang Setyoko, MP Brismartyansa Yudha Pamungkas Program Study of the Cultivation of Plantation crops Department of Agricultural Production State Polytechnic of Jember Program Studi Budidaya Tanaman Perkebunan Jurusan Produksi Pertanian Politeknik Negeri Jember ABSTRACT This study was conducted to understand the Effect of Combination of Nitrogen, Phosphorus, and Potassium Fertilizer Doses which can produce high rosella plants. This study was conducted on 10 October 2017 until May, 20 2018 held at the village of Antirogo, Kabupaten Jember. This study uses a Randomized Block Design (RCBD) non factorial. The combination dose of fertilizer treatment is T1 = 7 grams of Urea, 10 grams of SP36, and 5 grams of KCl, T2 = 10 grams of Urea, 13 grams of SP36, and 5 grams of KCl, T3 = 10 grams of Urea, 10 grams of SP36, and 8 grams of KCl, T4 = 7 grams of Urea, 13 grams of SP36, and 8 grams of KCl, T5 = 10 grams of Urea, 13 grams of SP36, and 8 grams of KCl, T6 = 13 grams of Urea, 13 grams of SP36, and 8 grams of KCl, T7 = 10 grams of Urea , 16 grams of SP36, and 8 grams of KCl, T8 = 10 grams of Urea, 13 grams of SP36, and 11 grams of KCl, T9 = 13 grams of Urea, 16 grams of SP36, and 11 grams of KCl. Significant variance results were tested further by Duncan's Multiple Range Test (DMRT) with a level of 5%. The results of the analysis showed that the combination treatment of Nitrogen, Phosphorus, and Potassium fertilizers showed no significant difference to all observation parameters including the height of the rosella plant, the number of branches of rosella production, the number of calyx and capsules, the wet weight of calyx and capsules, and the dry weight of calyx and capsules. Key words: Rosella Red Flower Plant, Nitrogen, Phosphorus, and Potassium Fertilizer