Bioefficacy of plant extracts against the diamondback moth (Plutella xylostella L.)

DOI: 10.18173/2354-1059.2021-0019

Abstract

This study aimed to evaluate the effect of three types of plant extracts on pest mortality, pest chasing away effects, and antifeedant index. The results released that the rate of chasing diamondback moth reached 53.10% when spraying ginger-garlic-chili extract. This ratio when using the extracts from shallot and tomato leaves was respectively 31.48% and 27.80%. Similarly, with two other research criteria, the use of ginger-garlic-chili extract also brought the strongest efficiency when the pest mortality and antifeedant index were created 86.63% and 94.60%. Spraying the extracts of shallot and tomato leaves showed the low effects on the diamondback moth mortality at the rates of 50.25% and 40.65%. Besides, the antifeedant index of the pest was only 64.23% and 44.45% respectively when using the extracts from the shallot and tomato leaf. These results initially indicated that the ginger-garlic-chili extract had a positive effect on the prevention of diamondback moth.