Effectiveness of Pseudomonas fluorescens Formulation to Control Bacterial Wilt Disease and to Increase Growth of Patchouli Plant

Abstract

Penyakit layu bakteri (Ralstonia solanacearum) merupakan salah satu kendala produksi nilam. Pseudomonas fluorescens Pf19 dapat menginduksi ketahanan nilam terhadap R. solanacearum. Penelitian ini bertujuan untuk mendapatkan dosis dan waktu aplikasi formula P. fluorescens Pf19 optimal yang efektif dan efisien mengendalikan R. solanacearum dan meningkatkan pertumbuhan dan produksi nilam. Hasil pengujian efektivitas dosis (75 dan 100 g L-1) dan waktu aplikasi (setiap 30, 60, 90, dan 120 hari) menunjukkan bahwa formula P. fluorescens Pf19 dapat mengendalikan penyakit layu bakteri dan meningkatkan pertumbuhan dan produksi tanaman nilam di lapangan. Dosis 100 g L-1 dan waktu aplikasi formula P. fluorescens Pf19 setiap 30 dan 60 hari sekali mempunyai kemampuan paling tinggi dan efektif dalam mengendalikan penyakit layu bakteri dengan masa inkubasi penyakit 88.0-93.5 hari setelah tanam (HST) dan intensitas penyakit 16.50-24.12%. Perlakuan yang sama dapat meningkatkan pertumbuhan nilam, yaitu tinggi tanaman 59.0-68.5 cm, jumlah daun total 417.5-510.0 daun per tanaman, bobot basah daun 234.55-263.45 g per petak dan bobot kering daun 25.32-29.28 g per petak.

Genetic diversity of Ralstonia solanacearum, A phytopathogenic bacterium infecting horticultural plants in Java, Indonesia

“…In Indonesia, less work has been done on genetic diversity of R. solanacearum strains. Most of R.solanacearum studies have been focusing on bacterial wilt disease control, either by application of antagonistic bacteria (Nasrun and Nurmansyah 2016;Saputra et al 2015;Yanti et al 2017) or developing new resistant varieties of plants (Adriani et al 2012;Hartati et al 2015). Most of them involved only one R. solanacearum strain in each study.…”

Potency of secondary metabolites of Trichoderma asperellum and Pseudomonas fluorescens in the growth of cocoa plants affected by vascular streak dieback

“…It was observed that P fluorescence had a potential to suppress the development of VSD disease and to produce secondary metabolites as high growth regulators, which enhance the growth of cocoa plants. According to Nasrun and Nurmansyah (2016), the formula with the active ingredient of P. fluorescens Pf19 can induce the resistance of patchouli against Ralstonia Solanacearum which causes bacterial wilt disease, and increased patchouli plant growth. Hariprasad et al (2013) showed that a tomato-rhizosphere-associated Pseudomonas sp.…”