TEKNOLOGI PENGKAYAAN UNSUR-UNSUR N, P, Fe PADA RUMPUT LAUT Gracilaria verrucosa
DOI:
https://doi.org/10.15578/jkn.v8i3.6232Keywords:
pengkayaan, pertumbuhan, klorofil, kadar agar, physico-kimia agarAbstract
Penelitian ini bertujuan untuk mengkaji respon pertumbuhan Gracilaria verrucosa melalui teknologi pengkayaan N,P dan Fe sebagai unsur hara makro dan mikro ke dalam media budidaya. Metode penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 ulangan, yaitu tanpa pengkayaan nutrien/non-enriched (A), pengkayaan N (B), pengkayaan N+P (C) dan pengkayaan N+P+Fe (D). Hasil penelitian menunjukkan pengkayaan N+P+Fe memberi pengaruh yang lebih tinggi terhadap pertumbuhan G. verrucosa dan berbeda secara signifikan dengan perlakuan lainnya (p<0.05). Disamping itu, klorofil dan konsentrasi N, P, Fe pada rumput laut juga terdeteksi lebih tinggi pada perlakuan tersebut. Dengan demikian dapat dikatakan teknologi pengkayaan dengan menggunakan kombinasi unsur hara makro (N,P) dan mikro (Fe) dalam budidaya G. verrucosa dapat meningkatkan pertumbuhan secara signifikan sehingga dapat dipertimbangkan untuk diaplikasikan dalam budidaya rumput laut tersebut. Meskipun secara umum kadar dan karakteristik physico-kimia agar lebih baik pada perlakuan pengkayaan N+P, namun kadar agar dan gel strengthnya tidak berbeda dengan perlakuan pengkayaan N+P+Fe.
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