Control of Spodoptera litura pests on Deli tobacco plants (Nicotiana tabaccum) with natural pesticides from Melia azedarach bark extract

Abstract

Batubara R, Dalimunte A. 2016. Control of Spodoptera litura pests on Deli tobacco plants (Nicotiana tabaccum) with natural pesticides from Melia azedarach bark extract. Biofarmasi 14: 33-37. The objective of this study was to assay the potential of mindi bark extract (Melia azedarach L.) as a natural pesticide on ulat grayak (Spodoptera litura Fab.) in Deli tobacco pest (Nicotiana tabaccum L.) in various solvents and concentrations. In this study, mindi bark was powdered and extracted using various solvents, i.e. methanol, acetone, and akuadest. Five concentration levels of 0%, 1%, 2%, 3% and 4% were prepared, then tested in the laboratory for the ability to eradicate ulat grayak and phytochemically tested for extractive chemical (or secondary metabolite) content. The difference of mindi bark extract from different solvents significantly affect on ulat grayak mortality; on the other hand, the concentration and interaction between solvent type and concentration did not significantly affect on ulat grayak mortality. The mindi bark extract contains alkaloids and little saponins in acetone extract.