Effect of inorganic fertilizer on the growth of freshwater Chlorella sp.

2nd International Symposium on Marine and Fisheries Research

地球科学;农业科学

Rahardini, R.A.^1 ; Helmiati, S.^1 ; Triyatmo, B.^1

Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada, Jl. Flora, Bulaksumur Yogyakarta, Indonesia^1

关键词: Completely randomized designs;    Culture medium;    Doubling time;    Fluorescent light;    Initial density;    Inorganic fertilizers;    Nutrient sources;    Population densities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/139/1/012005/pdf
DOI  :  10.1088/1755-1315/139/1/012005

学科分类：农业科学（综合）

来源: IOP

【 摘 要 】

One of the alternative nutrient sources in the culture of Chlorella sp. is inorganic fertilizer. The aim of this study was to determine the effect of inorganic fertilizer composition in the culture medium on the growth of Chlorella sp. This research was conducted by using the 2.5 L transparent containers containing 2 L freshwater. The culture was carried out in laboratory facilitated with an air conditioner, fluorescent light and continuous aeration for 14 days of culture. The treatments consisted of fertilizer composition of Urea:ZA:TSP i.e. P1 (1:1:0,50), P2 (2:2:0,70), P3 (3:3:1), P4 (4:4:1,25) and P0 (Walne medium) as a positive control. Each treatment was performed in triplicates and arranged based on the Completely Randomized Design. Chlorella sp. was inoculated with the initial density of 30 104cells•mL-1. The results of this study showed that the inorganic fertilizer composition of 3:3:1 provided the highest growth rate of 25.9 %/day, and the highest population density reached 2.348 104cells•mL-1. The doubling time was not affected by the inorganic fertilizer treatments.