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All Journal Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Acta Aquatica: Aquatic Sciences Journal Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Intek Akuakultur JURNAL PENDIDIKAN TAMBUSAI Jurnal Review Pendidikan dan Pengajaran (JRPP) Authentic Research of Global Fisheries Application Journal (Aurelia Journal) Abdimasku : Jurnal Pengabdian Masyarakat ANTHOR: Education and Learning Journal ANTHOR: Education and Learning Journal
Daniel Sinaga, Daniel
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Efektivitas Pupuk Anorganik Yang Berbeda Untuk Substtusi Urea Sebagai Sumber Nitrogen Pada Nutrien Kultur Nannochloropsis sp. Ilyas, Muhammad Ilyasya; Ilyasya, Muhammad; Irawan, Henky; Sinaga, Daniel
Jurnal Intek Akuakultur Vol. 8 No. 1 (2026): Intek Akuakualtur
Publisher : Program Studi Budidaya Perairan Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/intek.v8i1.7496

Abstract

Nitrogen is one of the nutrients needed by Nannochloropsis sp., but there has been no determination of fertilizer dosage based on fertilizer nitrogen sources. This study aims to determine the provision of inorganic fertilizers capable of substituting urea in the culture nutrients of Nannochloropsis sp. and to find out inorganic fertilizers that are effective for use as a nitrogen source for the Nannochloropsis sp. cell population. This study used a Completely Randomized Design (CRD) with 1 control and 3 treatments, namely: Control (Urea 50 mg / L Urea, Za, TSP, EDTA), treatment A (NPK Fertilizer 16 16 16, Za, TSP, EDTA), treatment B (Calcium Nitrate Fertilizer, ZA, TSP, EDTA), treatment C (Calcium Ammonium Nitrate Fertilizer, ZA, TSP, EDTA), each with 3 replications. The parameters observed included daily density, peak population, doubling time, water quality and light intensity. The results showed that during 7 days of maintenance, the highest daily density of Nannochloropsis sp. cells was found on D-5 of maintenance with the highest growth in treatment C (Calcium Ammonium Nitrate Fertilizer) which was 18,528,611 cells/ml with the fastest doubling time in treatment C (Calcium Ammonium Nitrate Fertilizer) which was 37.04 cells/hour and the lowest growth in treatment A (NPK 16 16 16 Fertilizer) which was 17,128,611 cells/ml with the longest doubling time in the control (Urea Fertilizer) which was 46.6 cells/hour. The peak population for the control and all treatments was found on D-5 of maintenance. The light intensity during the study ranged from 6,357 lux. These results indicate that NPK 16 16 16, Calcium Nitrate and Calcium Ammonium Nitrate fertilizers are able to substitute urea as a nitrogen source in the nutrient culture of Nannochloropsis sp. and the three organic fertilizers are effective in being used as a nitrogen source for the Nannochloropsis sp. cell population.  
Co-Authors Adsiti, Anggia Aldwi Agave, Kezia Erica Andia, Bherly Aulina, Natasya Bakkara, Okto Rimandi Berutu, Mita Maharani Darmawan, David Divya, Neha Doni Irawan Saragih ELVI MAILANI Fenny Rizky Amelia Ilyas, Muhammad Ilyasya Ilyasya, Muhammad Irawan, Henky Jiratullah, Huraiyah Lily Viruly Lovina, Ronaldy Luhulima, Richard B. Matondang, Muhaini Matondang, Nurul Tri Ashayudha Br Mustika Wati Siregar Muzahar Naibaho, Yulinar Nasmi, Jannesa Nurinsani , Jiwana Putri, Dwi Septiani Ramadhani, Erlina Ratno, Suyit Raza’i, T. Said Rika Wulandari Samsul Bahri Saputra, Rio Seno Andri Shavika Miranti Sigab, Ribka Elstin Sihite, Mutiara Angelica Hasian Sipayung, Helena Raymonda Sipayung, Stephanie Syafiq, R. Muhammad Tambunan, Septi Permai Natasya Tri Yulianto Utami, Jelita Yasmin, Kaila Azzahra Zacharias, Tehubijuluw