Budidaya rumput laut Caulerpa racemosa skala laboratorium menggunakan pupuk organik cair

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