International Science Community Association International Research Journal of Environmental Sciences 2319-1414 7 11 2018 11 22 Effect of different levels of NPK fertilizer on the growth and yield of Roselle (Hibiscus sabdariffa L) in Yola Adamawa State of Nigeria 37 41 EN Sari Kenanga 1 Dept. Biology, Faculty Sciences and Mathematics Diponegoro Univeristy, Jl. Prof. Soedarto, SH, Kampus Tembalang, Semarang, Indonesia Hidayat Jafron W 2 Dept. Biology, Faculty Sciences and Mathematics Diponegoro Univeristy, Jl. Prof. Soedarto, SH, Kampus Tembalang, Semarang, Indonesia Soeprobowati Tri Retnaningsih 3 Dept. Biology, Faculty Sciences and Mathematics Diponegoro Univeristy, Jl. Prof. Soedarto, SH, Kampus Tembalang, Semarang, Indonesia and School of Postgraduate Studies, Diponegoro Univeristy, Semarang 50241, Central Java, Indonesia Sharma Jiban 1 Amrit Campus, Institute of Science and Technology, Tribhuvan University, Kathmandu, Nepal Chauhan Raju 2 Amrit Campus, Institute of Science and Technology, Tribhuvan University, Kathmandu, Nepal Bhatta Sijar 3 Department of Environmental Science, GoldenGate International College, Kathmandu, Nepal Chhetri Ramesh 1 Forest Research Institute (deemed to be) University, Dehradun, India Kumar Parmanand 2 Forest Ecology and Climate Change Division, Forest Research Institute, Dehradun, India Traore Vieux Boukhaly 1 Department of Physics, Faculty of Science and Technology, Cheikh Anta Diop University, Dakar, Senegal Diallo Saidou 2 Department of Physics, Faculty of Science and Technology, Cheikh Anta Diop University, Dakar, Senegal SOW Mamadou Lamine 3 Department of Physics, Faculty of Science and Technology, Cheikh Anta Diop University, Dakar, Senegal Ndiaye Mamadou Lamine 4 Department of Geography, Faculty of Arts and Humanities, Cheikh Anta Diop University, Dakar, Senegal Diouf Rokhaya 5 Environmental Sciences Institute, Faculty of Science and Technology, Cheikh Anta Diop University, Dakar, Senegal Sarr Joseph 6 Department of Physics, Faculty of Science and Technology, Cheikh Anta Diop University, Dakar, Senegal Diaw Amadou Tahirou 7 Department of Geography, Faculty of Arts and Humanities, Cheikh Anta Diop University, Dakar, Senegal Beye Aboubaker Chedikh 8 Department of Physics, Faculty of Science and Technology, Cheikh Anta Diop University, Dakar, Senegal Masa’udu Idris 1 Dept. of Crop Science, School of Agri. and Agricultural Technology, Modibbo Adama University of Technology, Yola – Adamawa State Nigeria Emmanuel Abraham 2 Dept. of Soil Science, School of Agri. and Agricultural Technology, Modibbo Adama University of Technology, Yola – Adamawa State Nigeria Funmilayo Oyebanji O. 3 Department of Chemistry, Faculty of Physical Sciences, University of Ibadan, Ibadan, Nigeria Chinedu Emmanuel K. 4 Department of Chemistry, School of Physical Sciences, Modibbo Adama University of Technology, Yola, Adamawa State, Nigeria Ojeka Etah S. 5 Dept. of Fisheries, School of Agriculture and Agricultural Tech., Modibbo Adama University of Technology, Yola–Adamawa State Nigeria Abiloye Emmanuel 6 Dept. of Crop Science, School of Agri. and Agricultural Technology, Modibbo Adama University of Technology, Yola – Adamawa State Nigeria Louis Hitler 7 Department of Pure and Applied Chemistry, School of Physical Sciences, University of Calabar, Calabar, Cross River State, Nigeria > Short Communication 2018 7 13 2018 11 22 The research was conducted to study the effect of different levels of NPK 15:15:15 fertilizer on growth and yield of Roselle (Hibiscus sabdariffa L) at the Teaching and Research Farm of the Department of Crop Production and Horticulture, Modibbo Adama University of Technology Yola, Adamawa State, during the annual rainy season from May–June 2015, with six different levels of NPK fertilizer (0, 50, 100, 150, 200, and 250kg/ha). The treatment was laid in Randomized Complete Block Design (RCBD). Results obtained from this research showed that application of 200 and 250kg/ha has a significant impact as seen in the number of leaves and branches per plant as well as plant height, leaf length and fresh weight of Roselle compared to 0, 50, 100, and 150kg/ha. Copyright@ International Science Community Association