Application of the Off-Bottom Methods in Supporting the Growth of Seaweed Turbinaria ornata

Document Type : Original Article

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Abstract

One type of potential seaweed that is quite abundant is Turbinaria ornata, nevertheless, it has not been widely developed through cultivation in Indonesia. Turbinaria ornata has a very important role in the industrial world as an alginate raw material. This study aimed to determine the application of the off-bottom method cultivation through spacing in supporting the growth (absolute weight growth and relative growth) of seaweed T. ornata. The construction of seaweed T.ornata cultivation is a rectangle measuring 25m x 10m, made of polyethylene ropes fixed with concrete anchors. In the cultivation construction, there are five stretch ropes. Each stretch rope is installed at a distance of 25cm. Placement of seaweed T.ornata cultivation containers, using the off-bottom method, was carried out at a water depth of 1 meter. The data analyzed are absolute weight growth data and relative growth rate. The results showed that plant spacing had a significantly different effect on the growth of absolute weight and relative growth of seaweed Turbinaria ornata. A spacing of 35cm gave the best results for absolute weight growth and relative growth of seaweed Turbinaria ornata.

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Egyptian Journal of Aquatic Biology and Fisheries
Volume 28, Issue 1 - Serial Number 1
January and February 2024
Pages 1591-1599

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