Lemongrass [Cymbopogon citratus (DC.) Stapf.] oil: potential biocontrol agent against major fungal pathogens of gumamela (Hibiscus rosa-sinensis L.)

Issue Date

11-2011

Abstract

Lemongrass [Cymbopogon citratus (DC.) Stapf.] oil treatment at different volumes (10, 20. 30 and 50 μL) was tested for its antifungal activity in vitro and in vivo against Colletotrichum gloeosporioides. Fusarium moniliforme and Rhizoctonia solani, the fungal pathogens isolated from gumamela (Hibiscus rosa-sinensis L.). The efficacy of the extracted lemongrass oil was compared with 30 μL of 100 ppm Benomyl, a broad spectrum systemic fungicide. The in vitro assay showed that lemongrass oil significantly inhibited fungal growth at higher volumes when paper disk (at 50 μL) or agar dilution (at 30-50 μL) techniques were used. Based on in vivo assay, lemongrass oil significantly suppressed disease development in the inoculated Hibiscus plants, matching the performance of Benomyl. The bioactivity of the essential oil in its vapor phase could have made this fumigant effective in controlling the fungal pathogens. Foliar spray of lemongrass oil was found effective against C. gloeosporioides, a fungal pathogen causing foliar disease of Hibiscus.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

36

Issue

3

Page

70-75

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Physical Description

illustrations; tables; references

Language

English

Subject

antifungal, Benomyl, biocontrol, Colletotrichum gloeosporioides, Fusarium moniliforme, Hibiscus rosa-sinensis, lemongrass oil, Rhizoctonia solani

En – AGROVOC descriptors

CYMBOPOGON CITRATUS; ANTIFUNGAL PROPERTIES; BIOLOGICAL CONTROL; HIBISCUS ROSA SINENSIS; PATHOGENIC FUNGI; GLOMERELLA CINGULATA; GIBBERELLA FUJIKUROI; RHIZOCTONIA SOLANI

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