Analysis of Volatile Compound at Different Age of Corn Crops Used as Bemisia tabaci Repellent

Abstract

Bemisia tabaci is one of the red chili pests that plays a role as a Begomovirus vector. This vector can be controlled through Integrated Pest Management (IPM) practices. One of the potential practices is by utilizing corn as a barrier crop to prevent the vector from attacking the main crop. The aim of this research was to examine the repellence activity of the volatile compound obtained from various ages of corn crop against B. tabaci. The volatile compound was collected from the corns at 4 week after planting (WAP), 6 WAP, 8 WAP, 10 WAP, and 12 WAP. Volatile compound capture device was designed with two solvents, i.e. hexane and ethanol, then the volatile compound analyzed by Gas Chromatography Mass Spectrometry (GC-MS). B. tabaci repellency against volatile compound was examined using Y-tube olfactometer. Each treatment was employed with 5 replications. Data were analyzed using ANOVA with 95% and further analyzed by Least Significant Different (LSD). The parameter observed was the total of B. tabaci avoided the volatile compound tested until half of the control olfactometer arm. The results showed that all ages of the corn produced repellent compound and the most optimal were corn aged 12 WAP with repellency rate of 83.72%. GC-MS analysis identified the volatile compound were citronella, limonene, β-phellandrene, β-caryophyllene, 1.8 cineole, farnesol, caryophyllene, and patchouli alcohol.

The effect of maize plants as a repellent for Bemisia tabaci (Gennadius) on chili plants

“…Results from GCMS analysis of each maize variety revealed several compounds with repellent properties against B. tabaci, including 9-otadecenoic acid (Z)-, 9-octadecenamide, (Z)-, deltaguaiene, alpha-guaiene, beta caryophyllene, and patchouli alcohol. These findings corroborate results from Tyasningsiwi et al (2019) which identified citronella, limonene, β-phellandrene, β-caryophyllene, 1.8 cineole, farnesol, caryophyllene, and patchouli alcohol are repellent volatile compounds from maize against B. tabaci. 9-octadecenamide, (Z)-is known to possess larvicidal activities and disrupt insect respiration systems.…”

“…Further research is required to explore the potential of this approach and its practical application in pest management. Tyasningsiwi et al (2019) identified maize volatile compounds as B. tabaci repellents, specifically in Bisi-2. However, many maize varieties in Indonesia have been developed to produce different volatile compounds.…”