<![CDATA[Dirmawati, S. R., Wibowo, L., Hasibuan, R., Hariri, A. M., Evizal, R., & Rugayah, R. (2025). Inhibiting Effectiveness of Liquid Smoke and Tuber-Based Pesticides Against Fusarium in Vanilla. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-13 Tahun 2025, Palembangg 20 Oktober 2025. (pp. x–y). Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Vanilla is a plantation crop with high economic value in export value up to 116.7 million USD (BPS, 2023). However, vanilla cultivation have many problems, including stem rot disease caused by Fusarium oxysporum. The purpose of this study was to determine the effect of various concentrations of coconut shell liquid smoke in suppressing infections of pathogens that cause BBV, and to evaluate the effectiveness of using arrowroot tubers as a plant-based pesticide to suppress infections of pathogens that cause BBV.This vanilla research was conducted to determine the effect of liquid smoke concentration in inhibiting the growth of the F. oxysporum which causes vanilla stem rot disease, and to evaluate the use of botanical pesticides made from nutsedge tubers in suppressing the growth of F. oxysporum. The research was conducted from June to September 2025 at the Plant Disease Laboratory and Integrated Field Laboratory, Faculty of Agriculture, University of Lampung. This research consisted of two separate parts: a test of F. oxysporum inhibition by liquid smoke, and a second part was a test of F. oxysporum inhibition using botanical pesticides made from nutsedge tubers. The experiment used a Completely Randomized Design (CRD) with four replications. The treatment of liquid smoke and nutsedge tuber concentrations consisted of no liquid smoke, 1% liquid smoke, 2% liquid smoke, and 3% liquid smoke. The second experiment was the application of nutsedge tubers at 1%, 2%, and 3%. Data homogeneity was tested using the Bartlett test, and additivity using the Tukey test. Analysis of variance and further testing using the Duncan Multiple Range Test (DMRT) at the 5% level were performed. The results showed that liquid smoke at 1 to 3% and botanical pesticides made from nutsedge tubers at 1 to 3% were effective treatments in inhibiting the growth of F. oxysporum.]]>
