Open AccessGrowth of Nannochloropsis oculata in shrimp cultivation waste at difference N:P ratios
Author(s) -
Khaerun Nisa,
A. Shofy Mubarak,
Laksmi Sulmartiwi
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/718/1/012014
Subject(s) - shrimp , fertilizer , zoology , nutrient , population , completely randomized design , biology , chemistry , food science , fishery , ecology , demography , sociology
Shrimp culture waste contains high nutrients, namely N 2 , P 2 O 5 , K 2 O and has the potential to be used as organic fertilizer. Shrimp waste has a low N:P ratio so that it does not support microalgae growth, N:P needs to be adjusted for microalgae growth. The purpose of this study is determine the optimal N:P ratio in shrimp waste fertilizer which produced the highest growth of Nannochloropsis oculata . Method in this research is an experimental method. Completely Randomized Design (CRD) with 6 treatments and 3 replications. Treatment of shrimp waste fertilizer was used with different N: P ratios, N:P ratios of 10.5:1, 15.5:1, 20.5:1, and 25.5:1, namely : Walne fertilizer, N:P ratio 17:1 and Shrimp waste fertilizer with a ratio of N:P 5.9:1 is the control. Cultivation of N.oculata uses an initial density of 10 5 cells/mL, with light intensity ranging from 5.010-5.622 lux for 24 hours and lasts for seven days. Data analysis was processed used ANOVA then with DMRT. The results of this study had a significantly different effect on the population and growth rate of N. oculata . The exponential phase highest population mean of 965x10 4 cells/mL and the growth rate of 135x10 4 cells/mL/day.