Nano Bioinsecticides based on Essential oils Against Phenacoccus solenopsis

Document Type : Original Article

Authors

1 Microbiology Department Atomic Energy Authority- Egypt

2 Zoology Department- Faculty of Science (Girls) - Al-Azhar University

3 Plant Protection Research Institute Dokki- Giza, Egypt

4 -Microbiology Department Atomic Energy Authority- Egypt.

Abstract

In the present study,
insecticidal Activity of essential oils (lemon grass
Cymbopogon citratus
, thyme Thymus
vulgaris
and geranium Pelargonium
graveolens
) and silver nanoparticles
(AgNPs) synthesized by using  tested
essential oils were evaluated against female of P. solenopsis
Tinsley. At high concentration (40µl/l), the percentages of p. solenopsis
mortality recorded 100, 100 & 86.70%, for thyme, lemon grass and geranium EOs,
while it recorded 100, 90 and 83.3 % at (400ppm) of AgNPs-thyme,
AgNPs-lemon grass, and AgNPs-geranium after 72hrs of treatment. All essential
oils and AgNPs were proved to be very toxic to female of p. solenopsis.
However, thyme essential oil and AgNPs-thyme recorded the highest mortality
percentage with LC50 = 8.094 μl/l & 86.645 ppm, respectively,
followed by lemon grass (bulk & AgNPs- lemon grass oil) and geranium oil (bulk &
with AgNPs- geranium oil).

Keywords