EFFECTS OF LEMONGRASS (Cymbopogon citratus) BOTANICAL INSECTICIDE APPLICATION ON THE ARTHROPOD DIVERSITY OF BOTTLE GOURD (Lagenaria siceraria) IN THAI NGUYEN, VIETNAM

NOVIANI, NOVIANI and Arinafril, Arinafril and Arsi, Arsi and Huyền, Đào Thị Thanh (2024) EFFECTS OF LEMONGRASS (Cymbopogon citratus) BOTANICAL INSECTICIDE APPLICATION ON THE ARTHROPOD DIVERSITY OF BOTTLE GOURD (Lagenaria siceraria) IN THAI NGUYEN, VIETNAM. Undergraduate thesis, Sriwijaya University.

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Abstract

Lagenaria siceraria, an essential Cucurbitaceae plant widely cultivated for its nutritional and medicinal benefits. L. siceraria is vulnerable to pests which can cause significant yield losses. Conventional chemical insecticides are effective but pose risks to biodiversity and ecosystem health. Botanical insecticides, such as lemongrass, offer a safer alternative due to their biodegradability and lower toxicity to non-target organisms. This study evaluated the effects of lemongrass (Cymbopogon citratus) botanical insecticide on arthropod diversity in L. siceraria crops. Three treatments were applied: T0 (control), T1 (25% lemongrass botanical insecticide), and T2 (0.02% emamectin benzoate). Observations identified 1,373 individual arthropods from 9 orders, 30 families, and 34 species, performing roles as phytophages, predators, pollinators, decomposers, and parasitoids. Results revealed T1 achieved the highest Shannon-Wiener diversity index (1.96), while T2 had the highest evenness index (0.51), indicating a balanced species distribution. However, increased treatment frequency led to declines in arthropod diversity, reflecting environmental stress. Environmental factors which are humidity, temperature and precipitation supported crop growth but indirectly impacted arthropod populations. T1 was effective in controlling Batrocera cucurbitae, leveraging bioactive compounds like citronellal, citronellol, and geraniol with insecticidal properties. While T2 prevented species dominance, it also risked reducing diversity. The findings suggest T1 as a sustainable pest management strategy, balancing effective pest control with biodiversity conservation, while excessive use of synthetic insecticides like T2 could undermine long-term ecosystem health. This study underscores the need for environmentally friendly pest control to maintain agricultural sustainability.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	lemongrass, arthropod diversity, bottle gourd, botanical insecticide, environment
Subjects:	S Agriculture > S Agriculture (General) > S589.75-589.76 Agriculture and the environment S Agriculture > S Agriculture (General) > S604.5-604.64 Agricultural conservation
Divisions:	05-Faculty of Agriculture > 54295-Plant Protection (S1)
Depositing User:	Noviani Noviani
Date Deposited:	20 Jan 2025 07:53
Last Modified:	20 Jan 2025 07:53
URI:	http://repository.unsri.ac.id/id/eprint/163820

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