Produksi Rumput Laut (Gracilaria verrucosa) Berdasarkan Perbedaan Jarak Tanam dan Bobot Bibit di Tambak Desa Tlogosadang, Kecamatan Paciran, Kabupaten Lamongan

This study aims to determine the highest production of planting Gracilaria verrucosa wich is cultivated in the ponds of Tlogosadang Village, Paciran Sub-District, Lamongan District by treating different spacings and initial seed weights. The cultivation method used was longline with a distance of 25 cm between longlines. The treatments were given in the form of spacings of 10 cm, 20 cm, and 30 cm, while the treatments of seed weights were 50 g, 100 g, and 150 g. Treatments were carried out in a pond measuring 20x5 m with a water depth between 90-102 cm depending on the tides. Sampling was conducted every 7 days for 50 days of maintenance by weighed, controlled, and measurement water quality. Before planting seaweed, pond preparation were carried out which included drying, liming, fertilizing to filling the water. This study used a Completely Randomized Factorial (CRF) Design consisted of two factors, namely spacing and seed weight, each with three levels. Data analysis used One-Way ANOVA showed that the treatment of spacing and seed weight gave a very significant difference (P