Repellent Activity of Waste Extract from Two Local Medicinal Plant Against Rice Weevil (Sitophilus oryzae)

Bambang Priyono,Priyantini Widiyaningrum,Devy Candrawati,Dyah Rini Indriyanti

doi:10.15294/biosaintifika.v11i1.17651

Bambang Priyono, Priyantini Widiyaningrum + Show 2 more

Open Access

https://doi.org/10.15294/biosaintifika.v11i1.17651

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Abstract

In order to find natural and inexpensive bioinsecticides, the active compound of waste extract from two medicinal plants were analyzed. Ethanolic extracts of Amomum cardamomum and Zingiber zerumbet were evaluated under laboratory conditions for their repellency against rice weevil (Sitophilus oryzae, L.). Four extracts concentration were tested in this research, i.e: 25, 50, 75 and 100%. Efficacy was measured based on the response of rice weevil in preference tests using Y Olfactometer Tube, then the results were converted into the Percentage Repellency (PR) and Preference Index (PI). The PR data were analyzed using ANOVA, whereas PI values were analyzed descriptively. The result showed that the PR were significantly (LSD test; α> 0.05) and revealed that waste extracts repel the rice weevil at 100% solution. The highest PR was found at 100% solution in both extracts, however, statistically the repellency of A. cardamomum waste extract was higher than Z. zerumbet’s. Likewise, the PI of both extracts showed negative value at 75 and 100% concentration. This study concluded that extract of A. cardamomum and Z. zerumbet wastes have repellent effect against rice weevil and A. cardamomum repellency is better than Z. zerumbet. The findings of this study can provide a useful information for development of a rice weevil repellent extracted from waste product of medicinal plants that is more economically and environmentally friendly than synthetic insect repellents.

Highlights

Rice weevil (Sitophilus oryzae L.) is the main pest that causes damage to rice in storage
In an effort to find the source of affordable bioinsecticides for the control of rice weevil, this research was conducted to analyze the active compound contained in extracts of A. cardamomum and Z. zerumbet postharvest waste
Identification of active compounds using Gas ChromatographyMass Spectrometry (GC-MS) showed that waste extract of A. cardamomum plant contained 4 major components, i.e. essential oils, fatty acids, saponins, and flavonoids

Summary

Introduction

Rice weevil (Sitophilus oryzae L.) is the main pest that causes damage to rice in storage. In an effort to find the source of affordable bioinsecticides for the control of rice weevil, this research was conducted to analyze the active compound contained in extracts of A. cardamomum and Z. zerumbet postharvest waste. This study will provide the information regarding the ability of A. cardamomum and Z. zerumbet to be used repellents against rice weevil.

Results

Conclusion