Update Artikelilmiah: 48877

UMAISAROH

NIM

Judul Artikel

Abstrak (Bhs. Indonesia)

Penelitian ini bertujuan untuk mengeksplorasi bakteri penambat nitrogen (BPN) dari rizosfer tanaman singkong di Desa Notog dan menguji efektivitasnya dalam mendukung pertumbuhan pakcoy (Brassica rapa L.) secara hidroponik. Eksplorasi dilakukan dari Mei hingga Desember 2024 di Laboratorium Agroekologi dan greenhouse Fakultas Pertanian, Universitas Jenderal Soedirman. Sepuluh isolat dominan diperoleh, dengan tiga isolat bakteri unggulan, yaitu KNS2 dan KNS8 dengan kemampuan fiksasi N dan melarutkan fosfat, serta KNS2 dan KNS10 dengan kemampuan fiksasi N dan menghasilkan ZPT IAA.  Hasil uji aplikasi tiga isolat dengan variasi dosis pupuk nitrogen (100%, 50%, dan 0%) pada tanaman pakcoy, menemukan bahwa pemupukan N 50% + 10 mL suspensi bakteri KNS2, KNS8, dan KNS10 mampu meningkatkan bobot segar pak coy, masing-masing 58,79%, 31,63% dan 33,77% dibanding perlakuan yang diberi pupuk N 100% tanpa isolat.  Bahkan pemberian ke 3 isolat BPN pada pengurangan pupuk nitrogen hingga 100%, masih cenderung meningkatkan bobot segar pakcoy sebesar 26,3%, 6,3% dan 23,4% dibanding kontrolnya (N dosis 100%).

Abtrak (Bhs. Inggris)

This study aims to explore nitrogen-fixing bacteria (NFB) from the rhizosphere of cassava plants in Notog village and evaluate their effectiveness in supporting the hydroponic growth of pakcoy(Brassica rapa L.). The exploration was conducted from May to December 2024 at the Agroecology Laboratory and greenhouse of the Faculty of Agriculture, Jenderal Soedirman University. Ten dominant bacterial isolates were obtained, with three superior isolates: KNS2 and KNS8, which possess nitrogen fixation and phosphate-solubilizing capabilities, while KNS2 and KNS10, which has nitrogen fixation ability and produces the plant growth hormone indole-3-acetic acid (IAA). The application of these three isolates with varying nitrogen fertilizer doses (100%, 50%, and 0%) on pak choi revealed that a nitrogen fertilization of 50% combined with a 10 mL suspension of KNS2, KNS8, and KNS10 increased fresh weight by 58,79%, 31,63%, and 33,77%, respectively, compared to the treatment with 100% nitrogen fertilization without bacterial isolates. Furthermore, the application of these three NFB isolates, even with a 100% reduction in nitrogen fertilizer, still tended to increase the fresh weight of pak choi by 26,3%, 6,3%, and 234%, compared to the control treatment (100% nitrogen dose).

Kata kunci

Pembimbing 1

Pembimbing 2

Pembimbing 3

Tahun

Jumlah Halaman