Laboratory Evaluation of an Entomopathogenic Fungus, Isaria fumosorosea wize pa208 against Two-spotted Spider Mite, Tetranychus cucurbitacearum (SAYED)

Document Type : Original Article

Authors

Plant Protection Research Institute, Agricultural Research Center, Giza, Egypt

Abstract

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.

Keywords

Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Volume 9, Issue 3
December 2017
Pages 1-6

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