IDENTIFIKASI MORFOLOGI BAKTERI ASAM LAKTAT PADA NIRA SEGAR LONTAR (Borassus flabellifer Linn)

Surenshy Bulu, Mellisa E.S Ledo, Anggraeni Dian Naomi Rupidara

Abstract


Entomopathogen is one of the biological agents that infects the insects and can damage the body's metabolic system of insects. This objective of the study were to determine the entomopathogenic activity of S. marcescens on mortality of coconut leaf beetles larvae (B. longissima), and the time needed to reach LT50. The study used an experimental method with 6 treatments of varying S.marcescens volumes, consisting of A (distilled water as a control), B (5 ml), C (7.5 ml), D (10 ml), E (12.5 ml), and F (15 ml) with 4 replications. The data were analyzed using ANOVA and Probit LT50 test. The results showed that the volume of S.marcescens had an effect on mortality of coconut leaf beetle B. longissimi larvae. The best mortality rate at treatment E is 78% with the value of LT50 in treatment F is 42.15 hours. S.marcescens has entomopathogenic activity in coconut leaf beetles (B. longissima) Gestro larvae.

Keywords


Entomopathogen, Serratia marcescens, Brontispa longissima, Mortality

Full Text:

PDF


DOI: https://doi.org/10.34312/jebj.v1i2.2518

Refbacks

  • There are currently no refbacks.




Copyright (c) 2019 Surenshy Bulu, Mellisa E.S Ledo, Anggraeni Dian Naomi Rupidara

Lisensi Creative Commons
Karya ini dilisensikan dengan Lisensi Internasional Creative Commons Attribution-ShareAlike 4.0 .