EFEKTIVITAS BAKTERI Bacillus thuringiensis YANG DIBIAKKAN PADA BERBAGAI MEDIA CAIR TERHADAP Spodoptera litura

SARI, INDAH KURNIA and Pujiastuti, Yulia and Suparman SHK, Suparman SHK (2014) EFEKTIVITAS BAKTERI Bacillus thuringiensis YANG DIBIAKKAN PADA BERBAGAI MEDIA CAIR TERHADAP Spodoptera litura. Undergraduate thesis, Sriwijaya University.

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Abstract

The aim of this research was to determine the best liquid media used to grow B. thuringiensis and its effect on the virulence of the bacteria when inoculated to S. litura. The research was conducted in the Laboratoiy of Phytopathology, Department of Plant Pests and Diseases, from June to August 2014. The research was arranged in a complately randomized design consisted of 7 treatments and 3 replications. The treatments were the composition of liquid media consisted of: coconut water (Pl), liquid waste of tofii industiy (P2), soybean immersing water (P3), combination of coconut water and liquid waste of tofii industry (P4), combination of coconut water and soybean immersing water (P5), combination of liquid waste of tofu industry and soybean immersing water (P6) and Nutrient broth (P7). Ali treatments werer added with mineral salts. Parameters observed were spore concentration, infection symptoms of B. thuringinesis on S. litura and larval mortality of S. litura. The results showed that spore concentration was changed after different period of culture storing. Infected larvae showed slower movement and reduced of feeding appetite before final ly died. The dead larvae changed their body color became reddish brown and eventually black with milky and smelly liquid discharged from their bodies. The larvae died prior to pupa formation showed wrinkle bodies and produced the same liquid and odor. The mortality of S. litura under all treatments were 100%. The best media to grow B. thuringiensis to infect S. litura was the combination of coconut water and soybean immering water (P5).

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Spodoptera litura, bioinsektisida cair, Bacillus thuringiensis
Subjects:	S Agriculture > S Agriculture (General) > S589.8-589.87 Plant growing media. Potting soils
Divisions:	05-Faculty of Agriculture > 54211-Agricultural Technology (S1)
Depositing User:	Ichlasyah Aisyah
Date Deposited:	01 Jul 2024 02:31
Last Modified:	01 Jul 2024 02:31
URI:	http://repository.unsri.ac.id/id/eprint/148212

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