RESIDUAL EFFECT OF SOME ACARICIDES ON SOME BIOLOGICAL ASPECTS OF TETRANYCHUS URTICAE KOCH (ACARI: TETRANYCHIDAE)

Document Type : Research articles.

Authors

Plant Protection Dept., Fac. of Agric. Fayoum Univ., Fayoum, Egypt.

Abstract

The management of the two spotted spider mite, Tetranychus
urticae Koch, an economically important agricultural pest global wise
feeding on a wide range of host plant, is mainly based on the use of
acaricides. Mite reduction % after 3 and 7 days of spray and effect on
some biological aspects of treatments with eight different acaricides
were studied. After 3 days of treatment, the reduction of T. urticae
reached to a maximum (96.64%) with the use of Vermin while a
minimum (59.64%) was obtained with Komodo. After 7 days of
treatment, the reduction of T. urticae reached to a maximum (97.97%)
with the use of Buprolord and to a minimum (68.20%) with Vermin.
The longest life cycle (16.1 days) was obtained with Solofan treatment
while the shortest was (11.2 days) with Galesco and Komodo. The
experiments were performed under laboratory conditions (25±1°C,
80±5% RH and 16:8 h (L: D). Individuals which treated with Galesco,
Solofan and Vermin passed through the preoviposition period and did
not complete their life cycle while individuals treated with Komodo
reached oviposition period then died.

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