PANJAITAN, INDAH PERMATA SARI (2024) REPELENSI DAN TOKSISITAS MINYAK ATSIRI DAUN MIMBA (Azadirachta indica A. Juss.) PADA HAMA KUMBANG BUTIR BERGERIGI DAN KUMBANG TEPUNG MERAH. S1 thesis, Universitas Malikussaleh.

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Abstract

The serrated grain weevil Oryzaephilus surinamensis is an important pest that attacks cereals and cereal products in storage while the red flour weevil Triboliumcastaneum is an important pest that attacks various rice and cereal commodities and feed ingredients that are damaged due to improper postharvest handling. Environmentally friendly alternative control using neem leaf essential oil. This research aims to study the testing and effectiveness of neem leaf essential oil on repellency, toxicity and feeding inhibition on O. surinamensis and T. castaneumimago. The concentrations of neem leaf essential oil tested were 0.125%, 0.25%, 0.5%, 1%, 2% (v/v) and control. The experiment was repeated three times. The method used was the residue method on filter paper for testing repellency, toxicity and feeding inhibitors on neem leaf essential oil. The results showed that neem leaf essential oil has insecticidal activity against O. surinamensis and T. castaneum. Antifeedant test showed that the essential oil caused 71.43% inhibition of feeding activity of O. surinamensis and 66.67% of T. castaneum. The relationship between neem leaf essential oil concentration and mortality of O. surinamensis and T. castaneum imago was determined by probit analysis. Mortality of repellents and imago at concentrations of 0.125% - 2% reached >50%. LC50 values of neem leaf essential oil against O. surinamensis and T. castaneum at 4-7 days after application ranged from 1.23079% - 0.26410% and 0.68400% - 0.20104%. The food rejection test showed 100% rejection activity in O. surinamensis imago, while in T. castaneum imago it was 100% after day 7 of application. These results indicate that neem leaf essential oil can be utilized to control O. surinamensis and T. castaneum imago in stored rice and cereal products. Keywords: Botanical insecticide, Oryzaephilus surinamensis, inhibition, repellency, toxicity, Tribolium castaneum

Item Type:	Thesis (S1)
Subjects:	S Agriculture > S Agriculture (General) S Agriculture > SB Plant culture
Divisions:	Fakultas Pertanian > 54211 - Jurusan Agroekoteknologi
Depositing User:	Indah Permata Sari Panjaitan
Date Deposited:	18 Sep 2024 07:25
Last Modified:	18 Sep 2024 07:25
URI:	https://rama.unimal.ac.id/id/eprint/6164

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