RESPON PERTUMBUHAN RUMPUT VETIVER (Vetiveria zizanioides L.) TERHADAP PEMBERIAN ASAM ASKORBAT PADA KONDISI TERCEKAM SALINITAS
Abstract
Rumput Vetiver tumbuh toleran di lahan salin pada tingkat salinitas tertentu. Aplikasi asam Askorbat mampu menetralisir racun, melindungi sel dari senyawa oksigen reaktif dan radikal bebas serta mencegah kematian sel. Penelitian ini dilakukan di rumah kasa Fakultas Pertanian, UMSU, Medan. Penelitian ini menggunakan polybag yang diisi dengan tanah salin 4 dSm-1. Adapun tujuan dari penelitian ini adalah untuk mengetahui respon pertumbuhan rumput Vetiver (Vetiveria zizanioides L.) terhadap pemberian asam Askorbat pada kondisi tercekam salinitas. Penelitian ini dilaksanakan pada bulan Agustus sampai Oktober 2019. Metode penelitian yang digunakan pada penelitian ini adalah Rancangan Acak Kelompok (RAK) non faktorial, yaitu pemberian asam Askorbat (A), terdiri dari 3 taraf yaitu A0 = Tanpa Perlakuan, A1 = 50 ppm, A2 = 100 ppm. Peubah amatan yang diamati adalah jumlah klorofil, berat kering akar, berat kering daun dan volume akar. Hasil penelitian ini menunjukkan bahwa pemberian asam Askorbat pada rumput Vetiver di lahan salin 4 dSm-1 memberikan pengaruh nyata terhadap parameter jumlah klorofil, berat kering akar dan volume akar. Namun tidak berpengaruh nyata terhadap berat kering daun rumput Vetiver.
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