UJI EFIKASI BIO-INSEKTISIDA Bacillus thuringiensis DENGAN PERLAKUAN PREVENTIF TERHADAP LARVA Spodoptera litura PADA TANAMAN SAWI CAISIM (Brassica juncea L.)

FAUZIE, MARGHA EXTA NOVIA and Pujiastuti, Yulia (2021) UJI EFIKASI BIO-INSEKTISIDA Bacillus thuringiensis DENGAN PERLAKUAN PREVENTIF TERHADAP LARVA Spodoptera litura PADA TANAMAN SAWI CAISIM (Brassica juncea L.). Undergraduate thesis, Sriwijaya University.

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Abstract

Armyworm Spodoptera litura is one of the leaf-eating pests which cause a decrease in the productivity of mustard green. This research was aimed to study the effect of B. thuringiensis based- bio-insecticide application on mortality and lethal time (LT50) of S. litura larvae and their consumption of mustard green. The experiment was arranged in a randomized block design (RBD) with 5 treatments and 5 replications. The treatments were. P1, P2, P3 (B. thuringiensis based-bioinsecticide 5%; 10 %; 15% respectively), P4 (Dipel) and P5 (aquadest as control). Each treatment was applied to mustard green followed by inserting 2nd S. litura larvae. Observation of larval mortality and LT50 value was conducted during 5 days. The results showed the highest mortality of S. litura larva (68%) was found at P3 (15% concentration treatment). The lowest of LT50 value was obtained P3 (15% concentration) namely 2.392 days. The lowest average leaf area consumed was at P3 (a concentration of 15%).

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	bio-insecticide, Bacillus thuringiensis, Spodoptera litura, mortality, LT50.
Subjects:	S Agriculture > SB Plant culture > SB599-990.5 Pests and diseases
Divisions:	05-Faculty of Agriculture > 54295-Plant Protection (S1)
Depositing User:	Margha Exta Novia Fauzie
Date Deposited:	04 Jun 2021 08:02
Last Modified:	04 Jun 2021 08:02
URI:	http://repository.unsri.ac.id/id/eprint/47521

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