The Effect of Temperature Pressure on Multiantagonists Streptomyces sp., Tricho-derma sp. Biological Control of Fusarium oxysporum Wilt Pathogens

Abstract

Perubahan iklim karena pemanasan global dapat meningkatkan suhu tanah. Peningkatan suhu tanah dapat dipengaruhi oleh suhu udara yang dapat mempengaruhi kehidupan mikroorganime tanah. Streptomyces sp. dan Trichoderma sp. adalah mikroorganisme tanah yang berperan sebagai Agen Pengendali Hayati (APH) hama dan penyakit tanaman. Penelitian ini bertujuan untuk mengetahui kemampuan daya hambat Streptomyces sp. dan Trichoderma sp. pada suhu tinggi terhadap Fusarium sp. penyebab penyakit layu pada cabai. Penelitian menggunakan rancangan acak lengkap faktorial. Faktor pertama adalah suhu ruang 29-31 °C, suhu 50 °C, dan suhu 70 °C. Faktor kedua adalah jenis tanah andosol (lahan UPN) dan regusol (lahan desa Pare). Pengamatan dilakukan terhadap jumlah koloni Streptomyces sp. dan Trichoderma sp. serta daya hambat terhadap jamur Fusarium sp. Hasil penelitian menunjukkan bahwa daya hambat multiantagonis Streptomyces sp. dan Trichoderma sp. terhadap F. oxysporum pada suhu 70 °C di tanah andosol 90% dan terendah pada suhu 70 °C pada tanah regusol 31%.

Survivability and Benefit Evaluation of Streptomyces sp. and Trichoderma sp. as Active Ingredients of Biopesticides and Soil Fertility Enhancer in Shallot Fields at Wates Village Tulungagung

“…Lopez-Mondejar et al [11] explained that some species of Actinobacteria have the ability to grow slowly, so they need an immediately available source of nutrients such as exudates produced by plant roots so that Streptomyces generally live and interact around plant roots. This is in accordance with the statement of Sousa and Olivares [18] and Olanrewaju and Babalola [13] that some Streptomyces live in the rhizosphere and others live endophytes by colonizing the root tissue of host plants in a mutualism symbiosis as BCA and PGPS (Plant Growth-Promoting Streptomyces) living with colonize plant tissues, in addition Worsley et al [23] stated that Streptomyces obtained plant root exudates as a source of nutrition when colonizing roots. The presence of plants generally also affects the surrounding environmental conditions, which is called the microclimate.…”