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Kajian kinerja pertumbuhan dan kelangsungan hidup ikan kerapu macan (Ephinephelus fuscogusttatus) menggunakan pakan hewani yang berbeda Munawwar Khalil; Salamah Salamah; Zumairi Zumairi; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 2 (August, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i2.4785

Abstract

The tiger grouper (Epinephelus fuscoguttatus) is an economically important fish whose fry still relies on natural catches. Several species of grouper are very potential to be cultivated because of their fast growth, efficient feed conversion, and high selling value. The purpose of this study is growth performance and survival rate tiger grouper (Epinephelus fuscoguttatus) used different live feed. The research design used in this study was a Completely Randomized Design with 3 treatments 3 replications and continued with LSD test if there were differences. The treatments given are treatment A (Snail), treatment B (Chicken Intestine), and treatment C (Caterpillar Maggot). Parameters observed were length increase, weight gain, survival, feed response, and water quality. The results of this study indicate that the highest increase was found in the treatment of C: 4,04 cm and the lowest was in treatment B: 3 cm, the highest weight gain was found in the treatment of C: 3,73 grams, and the lowest was in treatment B: 2,18 grams. The survival rate for all treatments is 100%. During this study the temperature ranged (28.6-31.8 oC), pH (6.7-8.2), DO (6.3-8.1 ppm), and salinity (23-27 ppt).Keywords: growth, live feed, survival rate, tiger grouper.
Effectiveness of Spirulina platensis as a bioremediator candidate for vaname shrimp (Litopenaeus vannamei) wastewater Prama Hartami; Mauliyani Mauliyani; Erniati Erniati; Putri Masyithah; Rizky Kurniawan; Nurul Suhaila; Muliani Muliani; Rachmawati Rusydi
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.6992

Abstract

The purpose of this study was to determine the effectiveness of Spirulina platensis for remediation of vannamei shrimp culture waste. The method used in this study was a Non-Factoral Completely Randomized Design (CRD) with 4 treatments and 3 replications, namely (A) Control; (B) 50% waste (1500 ml waste + 1500 ml water) + technical fertilizer + Spirulina inoculant; (C) 75% waste (2,250 ml of waste + 750 ml of water) technical fertilizer + Spirulina inoculant; (D) 100% waste + technical fertilizer + Spirulina inoculant. Data analysis used ANOVA with 95% confidence level. The results showed that the use of Spirulina platensis as a remediation agent for vaname shrimp culture had a significant effect on reducing levels of waste ammonia, phosphate, nitrate, and density of Spirulina platensis (Fcount > Ftable 0.05).Keywords: Bioremediator; Innoculant; Vanname shrimp; Waste water
Analisis kandungan gizi pakan pellet yang diformulasikan dari bahan baku nabati berbeda terhadap kecukupan gizi ikan herbivora Muliani Muliani; Munawwar Khalil; Murniati Murniati; Rachmawati Rusydi; Riri Ezraneti
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 6: No. 2 (October, 2019)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v6i2.1636

Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui kandungan gizi dari pakan pelet yang diformulasikan dari bahan baku nabati yang berbeda dan sesuai dengan kecukupan gizi ikan herbivora. Metode yang digunakan dalam penelitian ini adalah Metode Deskriptif Analisis dengan pendekatan Kuantitatif dengan perlakuan sebagai berikut: A : pelet yang diformulasikan dari tepung daun kelor, B : pelet yang diformulasikan dari tepung daun pegagan, C : pelet yang diformulasikan dari tepung daun gamal, D: pelet yang diformulasikan dari tepung kedelai. Parameter uji dalam penelitian ini adalah kandungan gizi pakan seperti protein, karbohidrat, lemak abu dan air. Hasil penelitian menunjukkan bahwa kandungan gizi pakan yang paling baik terdapat pada pakan dari jenis tepung daun gamal dengan jumlah protein adalah 32,28%, karbohidrat 36,30%, lemak 8,45%, abu 10,77% dan air 12,20%. Selanjutnya pakan dari jenis tepung daun kelor dengan jumlah protein adalah 32,20%, karbohidrat 36,88%, lemak 6,97%, abu 11,85% dan Air 12,10%. Kemudian diikuti oleh pakan dari jenis tepung daun pegagan dengan jumlah protein adalah 28,33%, karbohidrat 34,67%, lemak 9,73%, abu 12,15% dan air 14,10% dan terakhir pakan dari jenis tepung biji kedelai dengan jumlah protein adalah 29,35%, karbohidrat 35,30%, lemak 13,08%, abu 11,28% dan air 12,10%.Kata kunci: pakan; gamal; kelor; pegagan; kedelaiAbstractThis study aims to determine the nutritional content of pellet feed which is formulated from different vegetable raw materials and following the nutritional adequacy of herbivorous fish. The method used in this study is Descriptive Analysis Method with Quantitative approach with the following treatment: A: pellets formulated from Moringa leaf flour, B: pellets formulated from gotu kola leaf flour, C: pellets formulated from gamal leaf flour, D: pellets formulated from soy flour. The test parameters in this study are feed nutrient content such as protein, carbohydrates, ash and water. The results showed that the best nutrient content in the diet of gamal leaf flour with the amount of protein was 32.28%, carbohydrate 36.30%, fat 8.45%, ash 10.77% and water 12.20 %. Furthermore, feed on the type of Moringa leaf flour with the amount of protein was 32.20%, carbohydrate 36.88%, fat 6.97%, ash 11.85% and water 12.10%. Then followed by feed from the type of gotu kola leaf flour with the amount of protein is 28.33%, carbohydrate 34.67%, fat 9.73%, ash 12.15% and water 14.10% and finally feed on the type of soybean flour with the amount of protein is 29.35%, carbohydrate 35.30%, fat 13.08%, ash 11.28% and water 12.10%.Keywords: feed; gamal; moringa; gotu kola; soybean
Efektifitas hormon ekdisteroid melalui pakan dalam meningkatkan performa pertumbuhan dan reproduksi kepiting bakau (Scylla sp) Mahdaliana Mahdaliana; Salamah Salamah; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.6965

Abstract

This study aims to determine the effect of feeding containing ecdysteroid hormones to increase the growth and reproduction of mangrove crabs so as to produce optimal reproduction of mangrove crabs. This research was conducted from August to October 2021 at the Hatchery and Cultivation Technology Laboratory. The method used in this study was a non-factorial completely randomized design (CRD) with 4 treatments and 3 replications, the addition of ecdysteroid hormone 5.50 ml, 7.50 ml, 9.50 ml and 0 ml. The results showed that the addition of ecdysteroid hormones to the feed significantly affected the moulting rate, weight gain, shell length and width and the survival of mud crabs. The best treatment was found in the 5.50 ml treatment with a molting rate of 16 days, weight gain of 12.09 grams, length of 1.84 cm, width of 7.33 and survival rate of 100%. The water quality during the study showed that it was still in a good range or can be tolerated by mangrove crabs, the water quality range was temperature 26.5-27 oC, pH 7.0-8.0, DO 6.3-6.8 mg, and salinity 34 - 35 ppt.Keywords: Ecdysteroids; Growth; Mangrove Crab; Moulting; Reproduction.
Pengaruh tepung buah mengkudu pada dosis yang berbeda untuk pengendalian bakteri Vibrio harveyi pada post larva udang windu (Penaeus monodon) Akmal Izwar; Eva Ayuzar; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 2: No. 1 (April, 2015)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v2i1.354

Abstract

Tujuan dari penelitian ini adalah untuk menemukan efektifitas dari tepung buah mengkudu untuk mencegah infeksi bakteri Vibrio harveyi pada posting udang windu. Rancangan yang digunakan dalam penelitian adalah Rancangan Acak Lengkap  (RAL) non faktorial dengan empat perlakuan dan tiga kali ulangan, yaitu : A (Perendaman dengan tepung buah mengkudu 40 gram/liter), B (Perendaman dengan tepung buah mengkudu 50 gram/liter), C (Perendaman dengan tepung buah mengkudu 60 gram/liter), D (kontrol). Selanjutnya pl 10 yang telah diaklimatisasikan diambil dari wadah pemeliharaan masing-masing perlakuan sebanyak 10 ekor, kemudian direndam dalam wadah  tepung buah mengkudu dengan dosis berbeda selama 15 menit, dengan ulangan masing-masing sebanyak 3 kali ulangan. Setelah perendaman dalam tepung buah mengkudu, udang tersebut dikembalikan ke wadah pemeliharaan dan dipelihara selama 7 hari. Selanjutnya pada hari ke 8 diinfeksikan bakteri  Vibrio harveyi  dengan konsentrasi 107 CFU/ml, melalui perendaman selama 15 menit yang dilakukan dalam wadah dengan volume air 1 liter. Berdasarkan uji statistik (analisis dengan uji F, menunjukan hasil bahwa imun post larva dengan dosis tepung buah mengkudu 40 gram, 50 gram, dan 60 gram dalam 1 liter air dan tanpa tepung buah buah mengkudu, menunjukkan hasil sangat berbedanyata dengan nilai 282,67> F tabel 4,02. Berdasarkan uji BNT  setiap perlakuan  diperoleh hasil untuk terbaik pada perlakuan C (Perendaman dengan tepung buah mengkudu 60 gram/liter) dengan nilai SR 93,3%.The purpose of this study was to find the effects of noni fruit flour to prevent bacterial infection of Vibrio harveyi on shrimp post larva. The rescarsh design used in this research was completely randomized design (CRD) non factorial with four treatments and three replications, namely: A (Soaking by the noni fruit flour 40 grams / liter), B (Soaking by the noni fruit flour 50 grams / liter), C (Soaking by the noni fruit flour 60 grams / liter), D (control). Post larva were immersed in none fruit with different doses for 15 minutes. Than on 8th the post larva were treated by immersing them in 107 cfu/ml of Vibrio harveyi for 15 menutes. After soaking post larva were returned to each container and main tained maintenance with a density of 10 post larva/container and observed for 15 days. Based on the statistica (analysis by F test, the result that immerion of post larva at a dose of noni fruit flour 40 grams, 50 grams, and 60 grams into a 1 liter of water and without the noni fruit flour showed highly significant the post larva with the value 282,67 > F tabel of 4.02 (Appendix 1). Based on futher (LDS) each treatment was di fferent and the bast survivalrate was gained at treatment C (immersion of shrinp in 60 grams/liter of noni) with the value 93,3%.
Peningkatan Kepadatan Thalassiosira sp dengan Dosis Pupuk Silikat yang Berbeda Erlangga Erlangga; Ayu Andira; Erniati Erniati; Mahdaliana Mahdaliana; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 3 (December, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i3.5858

Abstract

The research was conducted in 11-25 July 2020 at Water Quality and Fish Nutrition Laboratory, Faculty of Agriculture, University of Malikussaleh. The research design used was Completely Randomized Design (CRD) non factorial with 4 treatments and 3 replications. With treatment A: culture of Thalassiosira sp with 15 ppm silicate fertilizer, treatment B: culture of Thalassiosira sp with 17 ppm silicate fertilizer, treatment C: culture of Thalassiosira sp with 19 ppm silicate fertilizer, treatment D: culture of Thalassiosira sp with 21 ppm silicate fertilizer. The result showed that the effect of silicate fertilizer with different dosage gave a different significant to cells Thalassiosira sp density and significantly different to cells Thalassiosira sp peak populasion. The highest average cell density value was found in treatment A (15 ppm) of 419,10 x 104 cells/ml, then treatment B (17 ppm) of 256,67 x 104 cells/ml, followed by treatment C (19 ppm) of 216,29 x 104 cells/ml and treatment D (21 ppm) of 102,90 x 104 cells/ml. The highest cell populasion peak is found in treatment A (15 ppm) of 689,67 x 104 cells/ml, then treatment B (17 ppm) of 389,33 x 104 cells/ml, followed by treatment C (19 ppm) of 388 x 104 cells/ml and treatment D (21 ppm) of 156 x 104 cells/ml. the water quality of the study in standard condision is pH 6,9-8, salinity 32 ppt, light intensity 800-2500 lux, and temperature 25-290C.Keywords: Density, Thalassiosira, silicate
Pengaruh penggunaan probiotik pada media pemeliharaan terhadap benih maskoki (Carassius auratus) pada umur yang berbeda Vivi Julianti; Salamah Salamah; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 3: No. 2 (October, 2016)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v3i2.326

Abstract

Penelitian ini dilakukan di Laboratorium Hatchery dan Teknologi Budidaya Perairan Program Studi Budidaya perairan Fakultas Pertanian Universitas Malikussaleh, dimulai dari tanggal 27 April - 26 Mei 2015. Tujuan penelitian ini adalah mengetahui dosis probiotik yang tepat pada pemeliharaan untuk dapat menjaga kualitas air dan mengetahui umur benih yang tepat untuk dapat memanfaatkan probiotik dengan baik sehingga meningkatkan pertumbuhan dan kelangsungan hidup benih maskoki. Metode yang digunakan dalam penelitian ini dilakukan secara eksperimental dengan menggunakan Rancangan Acak Lengkap (RAL) pola faktorial dengan dua faktor. Perlakuan yang digunakan yaitu enam perlakuan dan tiga ulangan dengan pemberian probiotik 1,5 mg/L-2,0 mg/L untuk benih maskoki berumur satu dan dua bulan. Hasil penelitian menunjukkan bahwa penggunaan probiotik pada media pemeliharaan berpengaruh sangat nyata terhadap pertumbuhan berat dan kualitas air tetapi tidak berpengaruh terhadap pertumbuhan panjang, kelangsungan hidup, dan konversi pakan benih maskoki (Carassius auratus) pada umur yang berbeda. Hasil pengamatan menunjukkan bawah parameter kualitas air yang diukur selama penelitian menunjukkan kisaran yang sesuai atau masih dapat ditolerir untuk pemeliharaan benih ikan maskoki yaitu dengan kisaran suhu 27,1-27,7 ⁰C, DO 6,0-9,0 mg/L, pH 7,2-7,5, amonia 0,03-0,12 mg/L, nitrit 0,012-0,090 mg/L, dan nitrat 0,023-3,52 mg/L. Perlakuan A2B2 dengan dosis 1,5 ml/L pada benih berumur dua bulan merupakan dosis terbaik yang menghasilkan kelangsungan hidup tertinggi sebesar 73,33 %, namun laju pertumbuhan panjang, berat, dan nilai konversi tertinggi terdapat pada perlakuan A3B2 dengan dosis 2,0 ml/L pada benih berumur dua bulan yaitu sebesar 0,39 cm, 0,52 gr, dan 0,48 gr.The research was conducted at the Laboratory of Agriculture Hatchery and Technology Aquaculture Departement Faculty of Agriculture, Malikussaleh University, started on April 27th to Mey 26th 2015. The purpose of this study is know the dosage probiotics proper in maintenance for can keep of water quality and know age larvae proper to can use probiotics well raising growth and survival seed goldfish. The research used experimental method with factorials by using complete randommized design (CRD) with two factors. Those who used the six treatment and three remedial by the provision of probiotics 1.5 mg / l-2,0 mg / l for seed maskoki mature in one and two months. The research results show that the use of probiotics in a media maintenance influential very real on the growth of heavy and water quality but has not been affecting the growth long , survival , and conversion of the feed goldfish larvae at the age of different .Our observations showed under parameter a quality of water that measured for research shows a range appropriate or can still be tolerated for the maintenance of  goldfish larvae namely by the temperature range 27,1-27,7 ⁰C, DO 6,0-9,0 mg/L, pH 7,2-7,5, ammonia 0,03-0,12 mg/L, nitrites 0,012-0,090 mg/L, and nitrate 0,023-3,52 mg/L. Treatment with doses A2B2 1.5 mg/L on larvae was two months is doses best that produces survival highest of 73,33 %, but growth rate long, heavy, and the conversion is highest in treatment A3B2 with doses 2,0 ml / l on larvae was two months is as much as 0.39 cm, 0,52 gr, and 0,48 gr.
Pengaruh salinitas yang berbeda terhadap tingkat pertumbuhan dan kelangsungan hidup tiram (Crassostrea sp) Helmi Yanti; Muliani Muliani; Munawar Khalil
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 4: No. 2 (October, 2017)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v4i2.301

Abstract

Tiram (Crassostrea sp) merupakan salah satu bivalvial potensial yang dapat dikembangkan dalam rangka meningkatkan pendapatan ekonomi. Kualitas air (salinitas) yang baik akan mempengaruhi pertumbuhan dan kelangsungan hidup tiram. Penelitian ini bertujuan untuk mengetahui pengaruh salinitas yang berbeda (30 ppt, 25 ppt, 20 ppt, 15 ppt) terhadap tingkat pertumbuhan dan kelangsungan hidup tiram (Crassostrea sp). Penelitian ini dilaksanakan di Laboratorium Hatchery dan Teknologi Reulet Program Studi Budidaya Perairan Fakultas Pertanian Universitas Malikussaleh dari bulan April sampai Juni 2015. Adapun perlakuannya yaitu benih tiram dipelihara pada salinitas 30 ppt, 25 ppt, 20 ppt, dan 15 ppt. adapun rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan 3 ulangan dan 4 perlakuan dan dilanjutkan dengan uji Beda Nyata Terkecil (BNT) jika terdapat perbedaan. Parameter yang diamati adalah kelangsungan hidup, pertambahan panjang, lebar, pertambahan bobot dan kualitas air. Pertambahan bobot, lebar, dan panjang tertinggi terdapat pada perlakuan A yaitu dengan nilai rata-rata sebesar 1,104 gram, 0,144 mm, 0,252 mm dan pertambahan bobot, lebar, dan panjang terendah terdapat pada perlakuan D yaitu 0,358 gram, 0,039 mm dan 0,063 mm. Rata-rata kelangsungan hidup yaitu 97% pada perlakuan A, 93% pada perlakuan B dan 90% pada perlakuan C dan D. parameter kualitas air berada pada kisaran yang baik untuk pertumbuhan tiram dalam kisaran suhu 27,3 – 30,1 oC, pH 7,2 – 7,8 , dan DO 4,6 – 6,0 ppm.Oyster (Crassostrea sp) is one bivalvial potential that can be developed in order to improve the economic income. Water quality (salinity) which either will affect the growth and survival of oysters. This study aims to determine the effect of different salinity (30 ppt, 25 ppt, 20 ppt, 15 ppt) the growth rate and survival of oysters (Crassostrea sp). This research was conducted at Hatchery and Technology Laboratory, Aquaculture Department, Agriculture Faculty Malikussaleh University, which was held on April to June 2015. The treatment of seed oysters are reared at a salinity of 30 ppt, 25 ppt, 20 ppt and 15 ppt. As for the design used in this study is completely randomized design (CRD) with three replications and 4 treatments and continued by Least Significant Difference (LSD) if there is a difference. Parameters measured were survival, the length, width, weight gain and water quality. Added weight, width, and length highest in treatment A is the average value of 1,104 gram, 0,144 mm, 0,252 mm, and weight gain, width, and length was lowest for the treatment D, namely 0.358 g, 0.039 mm and 0,063 mm. The average survival is 97% at treatment A, 93% in treatment B and 90% in treatment C and D. The water quality parameters in the range which is good for the growth of oysters in the temperature range from 27,3 – 30,1 °C, pH 7,2 to 7,8, and DO 4,6 to 6,0 ppm.
Aplikasi Teknologi Akuaponik Dengan Kombinasi Subtrat yang Berbeda Terhadap Kualitas Air dan Pertumbuhan Ikan Nila (Oreochromis niloticus) Miftahul Jannah; Zulpikar Zulpikar; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 3 (December, 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i3.5853

Abstract

Tilapia (Oreochromis niloticus) is a type of freshwater fish that is widely cultivated by Indonesians. The problem that often arises in cultivation is lack of water quality. One of the ways to improve water quality is by using aquaponics technology, which can help to overcome lack of water quality by using a combination of different sub-extracts. This study was aim to determine the effect of different substrate combinations on water quality, growth of tilapia (Oreochromis niloticus) and lettuce vegetables. This study used an experimental method with a completely randomized design (CRD) with 4 treatments and 3 replications. That was control, rockwool and sawdust, rockwool and charcoal, rockwool and husk charcoal. The results showed that the use of different substrate combinations had no significant effect on water quality and fish growth. The best water quality was found in treatment D (rockwool and husk charcoal) with ammonia content of 0.09 mg / L, nitrate 13.45 mg / L, temperature 28.84 0c, pH 7.29 and DO 5.75 mg / L.Keywords: aquaponic system, substrate, tilapia, water quality.
Budidaya rumput laut Caulerpa racemosa skala laboratorium menggunakan pupuk organik cair Susi Pramita; Erniati Erniati; Zulpikar Zulpikar; Munawwar Khalil; Muliani Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.6968

Abstract

Indonesia is a maritime country that has seaweed natural resources that have the potential to be developed. Several types of seaweed have started to be cultivated by manipulating the cultivation environment such as providing various types of fertilizers to complement nutrient needs. This research was carried out at the Hatchery and Aquaculture Technology Laboratory of the Aquaculture Study Program, Faculty of Agriculture, Malikussaleh University in February –March 2020 which aims to determine the growth rate of Caulerpa racemosa by applying liquid organic fertilizer with different concentrations in the cultivation media. The design used was a non-factorial Completely Randomized Design (CRD) with 4 treatments and 3 replications, namely A Control (without giving liquid organic fertilizer), B (giving liquid organic fertilizer with a concentration of 0.22 mL fertilizer/L water), C (giving organic fertilizer). liquid concentration of 0.28 mL of fertilizer/L of water) and D (giving of liquid organic fertilizer with a concentration of 0.34 mL of fertilizer/L of water). The results showed that the application of liquid organic fertilizer had a very significant effect on the lengthgrowth rate of seaweed Caulerpa racemosa. The best growth rate was in treatment D with a length growth rate of 9.2 cm. There was no significant difference between the weight growth rate and the regeneration rate of the thallus. However, based on the growth yield data for all treatments, it can be said that the higher the concentration of liquid fertilizer used, the better the growth of seaweed Caulerpa racemosa.Keywords: Caulerpa rasemosa; Growth; Liquid organic fertilizer; Seaweed.