Ilham Romadhona Pengarang

PengaruhDosisPupuk Nitrogen Dan FosforTerhadapPertumbuhanBibit Kopi Arabika (CoffeaarabicaL.)Varietas S 795. The Effect Giving Nirtorgen And Phosphorus DosageFertilizer On Growth OfCoffee Arabica Seedlings (Coffea arabica L.) Variety S795. Ir. TrioonoBambangIrawan, MP as chief counselor and Ir. UskenFisdiana, MST as a member counselor Ilham Romadhona Study ProgramCultivationof Plantation Crops Majoring Of Agricultural Production Program Studi Budidaya Tanaman Perkebunan Jurusan Produksi Pertanian ABSTRACT This research is done on agriculuture production’s land, Polytechnic Of Jember from November 2017 until June 2018 using Competely Randomized Design with two treatment factor. The first factor is nitrogen fertilizer with four type, 0 gr urea/plant, 4 gr urea/plant, 8 gr urea/plant and 12 gr urea/plant, the second factor is phosphorus ferilizer with four type, 0 gr SP36/plant, 2 gr SP36/plant, 3 gr SP36/plant and 4 gr SP36/plant. The observed parameter are plant height, stem diameter, number of leafes, stem and leaf dry weight, stem and leaf wet weight, root dry weight, root wet weight and root long.The result show that growing control of fertillizer nitrogen significantly effect to height, stem dieameter, number of leaf, root dry weight and root wet weight. Phosphorus fertilizer significantly effect to stem diameter, root dry weight and root wet weight. The best phosphorus ferlizier at 4 gr SP36/plant. The interaction of nitrogen and phosphorus fertilizer had no significant effect for all parameter. Key words: arabica coffee seedlings, nitrogen fertilizer and phosporus fertilizer