Penelitian ini bertujuan untuk membandingkan pengaruh metode kantong dan metode longline terhadap produktivitas pertumbuhan rumput laut Eucheuma cottoni di perairan Desa Totolisi, Kabupaten Majene. Metode yang digunakan yaitu Rancangan Acak Kelompok (RAK) dengan dua perlakuan (P1 = metode kantong, P2 = metode longline) dan 10 ulangan, menghasilkan total 20 unit percobaan. Bibit Eucheuma cottoni yang digunakan memiliki berat awal 100 gr/ikat dengan kondisi segar dan sehat. Masa budidaya berlangsung selama 21 hari. Parameter yang diukur
meliputi produktivitas, pertumbuhan mutlak (Wm), dan laju pertumbuhan spesifik (LPS). Data dianalisis menggunakan ANOVA dan uji lanjut T-test dengan SPSS versi 26. Hasil menunjukkan Metode kantong lebih unggul dibandingkan longline. Rataan produktivitas metode kantong mencapai 124,5 gram, sedangkan longline 109 gram. Pertumbuhan mutlak (Wm) metode kantong (57 ± 11,3 gram) secara signifikan lebih tinggi daripada longline (17,8 ± 3,19 gram). Demikian pula, laju pertumbuhan spesifik (LPS) metode kantong (2,71 ± 0,54 gram) lebih tinggi dibanding longline (0,85 ± 0,15 gram). Hasil ANOVA menunjukkan pengaruh signifikan antara kedua metode (Sig. 0,00 < 0,05), dan uji T-test mengonfirmasi perbedaan signifikan dalam pertumbuhan mutlak (39,2) dan LPS (1,86). Metode kantong lebih efektif dalam meningkatkan produktivitas dan pertumbuhan Eucheuma cottoni dibandingkan metode longline. Temuan ini dapat menjadi pertimbangan dalam pengembangan
budidaya rumput laut untuk hasil yang lebih optimal.
This study aims to compare the effects of the pocket method and the longline method on the productivity of Eucheuma cottoni seaweed growth in the waters of Totolisi Village, Majene Regency. The method used is a Randomized Block Design (RBD) with two treatments (P1 = pocket method, P2 = longline method) and 10 repetitions, resulting in a total of 20 experimental units. The Eucheuma cottoni seedlings used weighed 100 grams/bundle, in fresh and healthy condition. The cultivation period lasted for 21 days. Parameters measured included productivity, absolute growth (Wm), and specific growth rate (LPS). Data were analyzed using ANOVA and further T-test using SPSS version 26. The results showed that the pocket method was superior to the longline method. The average productivity of the pocket method reached 124.5 grams, while the longline method achieved 109 grams. The absolute growth (Wm) of the pocket method (57 ± 11.3 grams) was significantly higher than that of the longline method (17.8 ± 3.19 grams).Similarly, the specific growth rate (SGR) of the bag method (2.71 ± 0.54 grams) is higher compared to the longline method (0.85 ± 0.15 grams). The ANOVA results showed a significant effect between the two methods (Sig. 0.00 < 0.05), and the T-test confirmed a significant difference in absolute growth (39.2) and SGR (1.86). The bag method is more effective in increasing the productivity and growth of Eucheuma cottoni compared to the longline method. These findings can be taken into consideration in the development of seaweed cultivation for more optimal results.