The influence of the entomopathogenic fungus, Isaria
fumosorosea Wize PA208 was evaluated against the two-spotted spider
mite, Tetranychus  cucurbitacearum
(Sayed) under laboratory conditions at Plant Protection Research Institute,
Sharkia branch, Egypt.
Two different application methods; spray and dipping techniques of fungi spores
suspension were tested at 25, 30±2˚C and 70±5 % R.H. Mortality percentages
increased with an increase of spore concentration, exposure time and
temperature degrees using spray compared with dipping technique. LC₅₀
values were 2.14×10⁶ and 1.70×10⁴ spores/ml after four
and seven days of spray application at 30 ˚C, respectively. On the other hand,
LC₅₀ values were 8.95×10⁶ and 2.77×10⁶ spores/ml
after four and seven days of dipping technique at 30˚C, consecutively.