EFFICIENCY OF QUICK LIME IS A NATURAL CONTROL BAIT AGAINST GRYLLOTALPA GRYLLOTALPA, (ORTHOPTERA: GRYLLIDAE) UNDER LABORATORY AND FIELD CONDITIONS.

Document Type : Research articles.

Author

Plant Protection Res. Institute Dept. of Biological Control Doki, Giza

Abstract

Quick lime, Beauveria bassiana, Metarhisium anisopliae, and
Hostathion were used as poisonous semi-hard cake which contains
one of each of above-mentioned materials, sugar can molasses and
wheat brain (2: 1: 4) against Gryllotalpa gryllotalpa adults under
laboratory and field conditions. Quick lime was used at quantity of 1,
1.5and 1.75 kg, Quick lime was the most efficient material against G.
gryllotalpa after 72 hr. when used at the quantities of 1.75 kg and
achieved 95% mortality, followed by Hostathion at the concentration
of 1.75 ml/l (80%) and both M. anisopliae at the concentration of
1.75 x107 spores /ml., (79%) and B. bassiana at the concentration of
1.75 x107spores /ml(65%).compared to the control. M. anisoplia, B.
bassiana were applied at the concentrations of 1x105, 1.5x106 and
1.75x107 spores / ml respectively. and Hostathion insecticide was
applied at the concentration of 1, 1.5and1.75L Starved adults were
exposed to the concentrations of LC50 without plants in the
laboratory for 24, 48 and 72 hr. Hostathion.q and quick lime also
achieved higher mortality (59 and 58%) after 72 hrs. compared with
any entomopathogens and Hostathion. In the field trails, G.
gryllotalpa were exposed to double concentrations of the quick lime,
fungal entomopathogen, and Hostathion for 2, 4 and 6 days. Fewer
grams of quick lime and Hostathion insecticide semi-hard cake were
consumed and achieved higher mortality after 6 days compared with
the two other biological agents and the control.

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