The purpose of this study is to determine the right planting point and seed weight to produce optimal growth Kappaphycus alvarezii. Seaweed cultivation method used is bottom off method and seed used is tissue culture seaweed. This research was conducted from February to April 2016 at Nambung beach, Sekotong Subdistrict, West Lombok regency, West Nusa Tenggara Province. This research used experimental method in field with experimental design that used is Factorial Random Design (Factorial RAL). Treatment consists of 2 factors, where the first factor is 3 different planting point (10 meters from coastline, 20 meter from coastline and 30 meters from the coastline) and the second factor is the weight of different seeds (1.5 gram and 50 gram seed weight). The results showed that the planting position of seaweed and the weight of the seeds used gave effect to absolute growth. The interaction between planting position and seed weight also gives Kappaphycus alvarezii a significantly different growth. The conclusion of this research is the use of planting point and seed weight give interaction to each other.Keywords: growth, tissue culture, bottom off method, weight, cultivated
ABSTRAKRumput laut merupakan komoditas unggulan perikanan budidaya di Indonesia. Pengembangan kawasan budidaya rumput laut dapat dipengaruhi oleh kondisi lingkungan biofisik perairan dan kondisi iklim. Salah satu faktor pembatas dalam budidaya rumput laut adalah musim tanam. Tujuan dari penelitian ini adalah untuk mengkaji pola musim tanam rumput laut yang dihubungkan dengan perubahan iklim yang terjadi di Teluk Gerupuk Kabupaten Lombok Tengah, Nusa Tenggara Barat. Data primer yang dikumpulkan dalam penelitian ini meliputi data keragaan budidaya rumput laut dan pola musim tanam. Data sekunder diperoleh dari berbagai instansi terkait meliputi Badan Meteorologi Klimatologi dan Geofisika, NOAA Center for Weather and Climate Prediction, dan Dinas Kelautan dan Perikanan. Data yang terkumpul dianalisis dan dibahas secara deskriptif yang disertai dengan gambar. Hasil dari penelitian ini menunjukkan bahwa pr oduktivitas lahan peng embangan r umput laut sang at dipengaruhi oleh kondisi iklim. Adanya perubahan iklim baik nasional maupun global (El Niño dan La Niña) sangat memengaruhi pola musim tanam rumput laut di Teluk Gerupuk. Musim tanam produktif umumnya terjadi pada bulan di mana curah hujan rendah (musim kemarau) dan suhu udara juga rendah (24 o C-27 o C). KATA KUNCI: perubahan iklim, musim tanam, rumput laut, Lombok Tengah ABSTRACT:Impact
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