The Effect of Dosing Liquid Organic Fertilizer on the Growth Rate of Seaweed Caulerpa Racemosa (J. Agardh, 1873)

Habib Muhammad  Raihan; Ria Azizah Tri  Nuraini; AB  Susanto

doi:10.59890/agknan60

Authors

Habib Muhammad Raihan Diponegoro University Author
Ria Azizah Tri Nuraini Diponegoro University Author
AB Susanto Diponegoro University Author

DOI:

https://doi.org/10.59890/agknan60

Keywords:

Dosage of Liquid Organic Fertilizer, Caulerpa Racemosa, Wet Weight of Seaweed, Specific Growth Rate

Abstract

Caulerpa racemosa is one of the most widespread green seaweeds in marine waters. Caulerpa racemosa is a seaweed that is a popular commodity. In addition to being a food ingredient, Caulerpa sp. is used as a substance that provides an anesthetic effect and as a mixture for anti-fungal drugs. The demand for this seaweed continues to increase, but its production cannot be fulfilled, this is because its production is seasonal and still relies heavily on natural products. Therefore, it is necessary to increase the production of Caulerpa sp. through engineering with the addition of fertilizers in its cultivation. This seaweed cultivation pays attention to several parameters such as temperature, dissolved oxygen, salinity, and nutrients. This study aims to examine the effect of giving various doses of liquid organic fertilizer on the growth (wet weight) of C. racemosa seaweed. This study used an experimental method using a completely randomized design (CRD). This method consists of 4 treatments and 3 repetitions. The doses or treatments given were treatment K (no dose of liquid organic fertilizer), A (liquid organic fertilizer dose of 2.5 mL), B (liquid organic fertilizer dose of 3.5 mL) and C (liquid organic fertilizer dose of 4.5 mL). The results of this study showed that the application of liquid organic fertilizer significantly affected the biomass and specific growth rate of C. racemosa (p<0.05). Treatment A (liquid organic fertilizer dose of 2.5 mL) gave the best results of all treatments with a specific growth rate of 1,33 ± 0,16%/day.

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