Uji Efektivitas Bioinsektisida Ekstrak Daun Waru (Hibiscus tiliaceus) terhadap Serangan Larva Spodoptera litura pada Tanaman Pakcoy (Brassica chinensis)

Alviani, Nurlaily (2021) Uji Efektivitas Bioinsektisida Ekstrak Daun Waru (Hibiscus tiliaceus) terhadap Serangan Larva Spodoptera litura pada Tanaman Pakcoy (Brassica chinensis). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tumbuhan Waru (Hibiscus tiliaceus) merupakan salah satu tumbuhan yang memiliki kandungan senyawa metabolit sekunder seperti saponin, alkaloid, flavonoid sehingga dapat dimanfaatkan sebagai bioinsektisida. Penelitian ini bertujuan untuk mengetahui efektivitas formulasi bioinsektisida cair dari bahan aktif daun waru terhadap serangan larva Spodoptera litura F. pada tanaman pakcoy (Brassica chinensis). Metode yang digunakan untuk ekstraksi adalah metode maserasi dengan etanol 96%. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 3 pengulangan yang terdiri dari konsentrasi ekstrak 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, dan 90% menggunakan metode celup daun pada uji pendahuluan, sedangkan pada uji lanjutan menggunakan metode oles daun dengan konsentrasi 0%, 35%, 40%, 45%, 50%, dan 55%. Data hasil pengamatan dianalisis menggunakan ANOVA one way dengan uji lanjutan Duncan dan nilai LC50 dianalisis dengan analisis probit. Hasil penelitian menunjukkan bahwa formulasi bioinsektisida cair ekstrak daun waru berpengaruh terhadap serangan larva Spodoptera litura pada tanaman pakcoy dengan konsentrasi yang paling efektif adalah konsentrasi ekstrak 45%. Ciri-ciri larva mati akibat pemaparan bioinsektisida adalah tubuh larva mengeras, berwarna cokelat sampai kehitaman, dan tubuh mengkerut. =================================================================================================== Waru (Hibiscus tiliaceus) was a herbs that contains secondary metabolites bioactive compounds such as saponins, alkaloids, and flavonoids so that it can be used as a bioinsecticide. This study aims to determine the effectiveness of the liquid bioinsecticide formulation from the active ingredient of hibiscus leaves against the attack of Spodoptera litura F. larvae on pakcoy (Brassica chinensis) plants. The method used for leaf extraction is the maceration method with 96% ethanol. The research design used was a completely randomized design (CRD) with 3 repetitions consisting of extract concentrations of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, and 90% using the leaf dipping method in the preliminary test, while in the follow-up test using the leaf basting method with the concentrations of 0%, 35%, 40%, 45%, 50%, and 55%. The results of the observational data were analyzed using one-way ANOVA with Duncan's follow-up test and the LC50 value was analyzed by probit analysis. The results showed that the liquid bioinsecticide formulation of waru leaf extract affected the attack of Spodoptera litura larvae on pakcoy plants with the most effective concentration being the extract concentration of 45%. The characteristics of dead larvae after exposure to bioinsecticides are hardened larval bodies, brown to blackish in color, and shrunken bodies.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Kata kunci – Bioinsektisida, Daun Waru , Mortalitas, Produktivitas, Spodoptera litura ========================================================= Keywords – Bioinsecticide, Waru leaf, Mortality, Productivity, Spodoptera litura
Subjects: Q Science > QH Biology
Q Science > QK Botany
S Agriculture > SB Plant culture > SB951.145.N37 Natural pesticides
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Biology > 46201-(S1) Undergraduate Thesis
Depositing User: Nurlaily Alviani
Date Deposited: 05 Aug 2021 01:29
Last Modified: 05 Aug 2021 01:29
URI: https://repository.its.ac.id/id/eprint/84864

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