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Papers by Ramarsa Hidayatul
IOP Conference Series: Earth and Environmental Science
The aim of this study was to determine growth of (Gracilaria sp.) with different spreading time o... more The aim of this study was to determine growth of (Gracilaria sp.) with different spreading time of thallus. The study was conducted from March to April 2017 in pond located in Domas Village, Serang Region, Banten Province. The experiment followed completely randomized design with the treatment of different time on spreading of seaweed thallus during the culture period (45 days). Treatments were without spreading (as control), spreading every 2 weeks, and spreading every 3 weeks. The observed variables were weight of seaweed thallus and several water quality parameters. Analysis of seaweed weight used ANOVA test and Tukey HSD test. The results showed that the spread seaweed thallus had a significant effect on weight gain in 0.05 level. It used 100 gram Gracilaria sp. as initial weight, treatment without spreading thallus produced 508 gram, spreading every 2 weeks produced 906 gram and spreading every 3 weeks produced 790 gram. Based on the weight gain of thallus, seaweed culture by spreading thallus every 3 weeks and 2 weeks seem to be able to increase productivity by 56 % and 78 %, respectively.
Jurnal Ilmiah Vastuwidya
There is many variety of seaweed in Indonesia. Among them there’s a lot of seaweed with high econ... more There is many variety of seaweed in Indonesia. Among them there’s a lot of seaweed with high economic value. One of a kind with high value and high demand from around the world is Eucheuma cottonii or Kappaphycus alvarezii. Eucheuma cottonii contains high karaginan which is imprortant for human health. Seaweed has a lot of benefit for food or others, so that we has to improve our knowledge about seaweed especially Eucheuma cottonii.From the research at KUB Mitra Bahari, their location too produce seaweed is not a perfect place such as their water quality, temperature, and salinity. This factor caused their seaweed growth less than 3%. Beside that, there is a predator like Baronang fish and a disease that attack the seaweed such as ice-ice. From financial analiysis, their income is Rp 275.625.595,00, with profit and loss ratio Rp 62.852.382,00. B/C ratio is 1,3 and BEP Rp 7.290/kgs. And their payback period is 2 years 1 month and 6 days. Their RoI are 40%
IOP Conference Series: Earth and Environmental Science
The aim of this study was to determine growth of (Gracilaria sp.) with different spreading time o... more The aim of this study was to determine growth of (Gracilaria sp.) with different spreading time of thallus. The study was conducted from March to April 2017 in pond located in Domas Village, Serang Region, Banten Province. The experiment followed completely randomized design with the treatment of different time on spreading of seaweed thallus during the culture period (45 days). Treatments were without spreading (as control), spreading every 2 weeks, and spreading every 3 weeks. The observed variables were weight of seaweed thallus and several water quality parameters. Analysis of seaweed weight used ANOVA test and Tukey HSD test. The results showed that the spread seaweed thallus had a significant effect on weight gain in 0.05 level. It used 100 gram Gracilaria sp. as initial weight, treatment without spreading thallus produced 508 gram, spreading every 2 weeks produced 906 gram and spreading every 3 weeks produced 790 gram. Based on the weight gain of thallus, seaweed culture by spreading thallus every 3 weeks and 2 weeks seem to be able to increase productivity by 56 % and 78 %, respectively.
Jurnal Ilmiah Vastuwidya
There is many variety of seaweed in Indonesia. Among them there’s a lot of seaweed with high econ... more There is many variety of seaweed in Indonesia. Among them there’s a lot of seaweed with high economic value. One of a kind with high value and high demand from around the world is Eucheuma cottonii or Kappaphycus alvarezii. Eucheuma cottonii contains high karaginan which is imprortant for human health. Seaweed has a lot of benefit for food or others, so that we has to improve our knowledge about seaweed especially Eucheuma cottonii.From the research at KUB Mitra Bahari, their location too produce seaweed is not a perfect place such as their water quality, temperature, and salinity. This factor caused their seaweed growth less than 3%. Beside that, there is a predator like Baronang fish and a disease that attack the seaweed such as ice-ice. From financial analiysis, their income is Rp 275.625.595,00, with profit and loss ratio Rp 62.852.382,00. B/C ratio is 1,3 and BEP Rp 7.290/kgs. And their payback period is 2 years 1 month and 6 days. Their RoI are 40%