Effectiveness of tuba root extract (Derris elliptica L.) against pest antifeedant Silkworm Crocidolomiabinotalison Plant mustard (Brassicajuncea)

Abstract

The application of tuba root bioactive extract (Derris elliptica L.) as a natural insecticide on the Crocidolomia binotalis caterpillar on mustard plants (Brassica juncea L.) was carried out. The test results showed that there were significant differences in antifeedant activity of the Crocidolomia binotalis caterpillar on mustard (Brassica juncea L.) plants at various concentrations. The research was carried out in several stages, starting from the tubal root extraction stage, phytochemical testing, preparation of caterpillar tests, testing of antifeedant activity. As the treatment is the level of methanol concentration of 50 ppm, 100 ppm, 500 ppm and 1000 ppm. The parameter observed was the percentage of Feeding Reduction (FR). The test results showed that the best antifeedant activity of Crocidolomia binotalis was at concentrations of 500 ppm and 1000 ppm because it was able to inhibit feeding power or Feeding Reduction of test caterpillars by 15.35% and 32.33%, was able to inhibit the feeding activity of Crocidolomia binotalis.

Antifeedant effects of crofton weed,Ageratina adenophoraextracts and their phytochemical compounds against three cabbage insect pest species

“…The overall data indicated that antifeedant activity was dependent on the concentration of solvent extract; with increasing concentration, antifeedant activity increased. Our findings showed that hexane extracts at 5% concentration give the highest antifeedant activity of (92.1, 87.4, and 81.7%) against P. xylostella, C. pavonana, From the report of Komansilan et al (2019), it was found that the strongest antifeedant activity of Derris elliptica (Wall.) Benth.…”

“…According to the findings of Ling et al (2008), in no‐choice antifeedant bioassays against P. xylostella , the antifeedant index of ethyl acetate extracts was 49.2 and 56.9% at 24 and 48 h, respectively. From the report of Komansilan et al (2019), it was found that the strongest antifeedant activity of Derris elliptica (Wall.) Benth.…”