Growth rate of Eucheuma denticulatum cultivated in horizontal net and vertical net
Abstract Eucheuma denticulatum is one of the most widely cultivated macroalga commodities. This commodity produces carrageenan iota as raw material for various industries. This study aims to compare the growth rate of E. denticulatum cultivated by the horizontal net (Horinet) and vertical net (Vertinet) methods. This research was conducted in September-December 2019 and located in Lakeba waters, Bau-Bau City, Southeast Sulawesi, Indonesia. The results showed that the specific growth rate of E. denticulatum seaweed cultivated with Horinet and Vertinet was significantly different. The growth of the thallus at an initial weight of 20 g developed to 67 g and 112.5 g as viewed with a horinet and vertnet, respectively. The specific growth rates of these two methods were 5.01 and 6.59%/day using vertinet and horinet, respectively. Based on the results of the t-test showed that the use of the two methods were significantly different by 0.46 and 0.36 (P<0.05) on the specific growth rate of E. denticulatum seaweed. Both of these methods can be used to cultivate seaweed with good results. However, these two methods have differences in the growth results obtained.