Artikel Ilmiah : A1D019010 a.n. NADIA ARI WULANDARI
| NIM | A1D019010 |
|---|---|
| Namamhs | NADIA ARI WULANDARI |
| Judul Artikel | Efektivitas Endofit Bacillus spp. untuk Mengendalikan Penyakit Bulai Pada Jagung Manis |
| Abstrak (Bhs. Indonesia) | Peronosclerospora maydis merupakan penyebab penyakit bulai yang dapat menurunkan produksi jagung. Pengendalian hayati dengan menggunakan bakteri antagonis yang berasal dari jaringan tanaman seperti Bacillus spp. merupakan alternatif pengendalian yang potensial dan ramah lingkungan. Penelitian bertujuan untuk mengetahui efektivitas Bacillus spp. dalam mengendalikan penyakit bulai dan pengaruh terhadap pertumbuhan jagung manis. Percobaan menggunakan rancangan acak kelompok dengan 5 perlakuan dan 5 ulangan, meliputi kontrol (tanpa perlakuan), Bacillus subtilis BB.B4, Bacillus subtilis BK.A1, Bacillus sp. BB.B1, dan pestisida metalaksil. Variabel yang diamati meliputi masa inkubasi, intensitas penyakit, Area Under Disease Progres Curve (AUDPC), efektivitas penekanan penyakit, tinggi tanaman, jumlah daun, bobot kering, bobot segar, panjang akar, bobot akar, volume akar serta uji fenol secara deskriptif. Hasil pengujian menunjukkan bahwa perlakuan B. subtilis BK.A1 berpotensi sebagai pengendali hayati penyakit bulai, karena mampu menunda masa inkubasi selama 8 hari dan menekan AUDPC 728 %*hari, serta menginduksi ketahanan tanaman dengan meningkatkan kandungan kandungan fenol alkaloid, flavonoid, tannin, dan saponin sehingga dapat memicu ketahanan tanaman terhadap serangan patogen. Meskipun demikian, perlakuan ini belum efektif dalam menekan efektivitas pengendalian punyakit bulai. B. subtilis BK.A1 mampu memacu pertumbuhan tanaman jagung dengan meningkatkan tinggi tanaman sebesar 50,8% dan bobot akar sebesar 57,1%. |
| Abtrak (Bhs. Inggris) | Peronosclerospora maydis is the cause of downy mildew which can reduce maize production. Biological control using antagonistic bacteria derived from plant tissues such as Bacillus spp. is a potential and environmentally friendly control alternative. The research aims to determine the effectiveness of Bacillus spp. in controlling downy mildew and its effect on the growth of sweet corn. The experiment used a randomized block design with 5 treatments and 5 replications, including control (without treatment), Bacillus subtilis BB.B4, Bacillus subtilis BK.A1, Bacillus sp. BB.B1, and metalaxyl pesticides. Variables observed included incubation period, disease intensity, Area Under Disease Progress Curve (AUDPC), effectiveness of disease suppression, plant height, number of leaves, dry weight, fresh weight, root length, root weight, root volume and descriptive phenol test. The test results showed that the B. subtilis BK.A1 treatment had the potential to be a biological controller of downy mildew, because it was able to delay the incubation period for 8 days and suppress AUDPC 728%*days, as well as induce plant resistance by increasing the content of phenol alkaloids, flavonoids, tannins, and saponins that can trigger plant resistance to pathogen attack. Even so, this treatment has not been effective in suppressing the effectiveness of downy mildew control. B. subtilis BK.A1 was able to stimulate the growth of corn plants by increasing plant height by 50.8% and root weight by 57.1%. |
| Kata kunci | Kata kunci: Bacillus spp., bakteri endofit, jagung, pengendalian hayati, Peronosclerospora maydis |
| Pembimbing 1 | Dr. Endang Mugiastuti, S.P., M.P. |
| Pembimbing 2 | Zulfa Ulinnuha, S.P., M.Si. |
| Pembimbing 3 | - |
| Tahun | 2023 |
| Jumlah Halaman | 10 |
| Tgl. Entri | 2023-07-20 21:08:33.841043 |