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Growth rate, yield and economics of Gracilariopsis bailinae (Gracilariales, Rhodophyta) using fixed bottom long-line method

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Date
1997
Author
Hurtado-Ponce, A. Q.
Agbayani, Renato F.
Samonte-Tan, G. PB.
Page views
1,483
Subject
cost benefit analysis ASFA
seaweed culture ASFA
growth rate ASFA
yields ASFA
Taxonomic term
Gracilariopsis heteroclada GBIF
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Abstract
Vegetative thalli of Gracilariopsis bailinae weighing 10 g each were tied to a 5-m monofilament line with plastic strips and laid horizontally on the substrate and were observed to grow at 30 d interval for 9 months. The monthly growth rate and yield were determined and a cost and return analysis of the culture system was made. The monthly growth rate of the seaweed was significantly different (P=0.05) over culture month. The highest average growth rate was 6.7 percent/day while the lowest was 1.7 percent. The lowest and highest average yield (dry wt) was 72 g and 660 g m-2 mo-1, respectively.

A capital asset of P1,680, working capital of P2,980, and annual production cost of P5,860 were calculated from the culture system. An annual net returns of P31,292 was computed based on a 1,000 m2 area. Return on investment is 671.50 percent while payback period is 1.7 months.
URI
http://hdl.handle.net/10862/1587
Suggested Citation
Hurtado-Ponce, A. Q., Agbayani, R. F., & Samonte-Tan, G. P. (1997). Growth rate, yield and economics of Gracilariopsis bailinae (Gracilariales, Rhodophyta) using fixed bottom long-line method. Philippine Journal of Science, 126(3), 251-260. http://hdl.handle.net/10862/1587
Type
Article
ISSN
0031-7683
Collections
  • Journal Articles [1158]


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