CD Skripsi
Pengaruh Konsentrasi Urea Terhadap Pertumbuhan Sel Nannochloropsis Sp. Skala Laboratorium
ABSTRACT
This research was conducted from October 2021 to January 2022, in the Natural Feed Laboratory of the Brackish Water Cultivation Fisheries Center (BPBAP) Ujung Batee, Aceh. The purpose of this study was to determine whether urea has an effect and to determine the best urea concentration on the growth of Nannochloropsis sp. This study used an experimental method with one factor RAL (Completely Randomized Design), consisting of 4 levels of treatment and control with 3 replications, so that 15 experimental units were obtained. The treatments tested were the uses of urea 40 ppm (treatment A), urea 60 ppm (treatment B), urea 80 ppm (treatment C), urea 100 ppm (treatment D), and Walne 1 ml (control). The population density of Nannochlropsis sp. highest was found in treatment D on day 4 (2414 x 104 cells/ml) and the lowest population growth was shown in treatment A (1177 x 104 cells/ml). The highest absolute growth rate occurred in treatment D (2229 x 104 cells/ml), while the highest relative growth rate occurred in treatment D (1205%) and the highest specific growth rate occurred in treartment B (79% per day). Keywords: Nannochloropsis sp., urea, dan density. 1 Student Faculty of Fisheries and Marine University of Riau, Pekanbaru 2 Lecturer Faculty of Fisheries and Marine University of Riau, Pekanbaru
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