EFFICIENCY OF CERTAIN ACARICIDES AND BIOFLY IN AN INTEGRATED SPIDER MITE TETRANYCHUS URTICAE MANAGEMENT

Document Type : Original Article

Authors

Department of Pesticides. Faculty of Agriculture, Kafr EI-Sh lkh, Tanta University, Egypt.

Abstract

Laboratory study was carried out to evaluate the toxic eHect of six
compounds; four acaricides (pyridaben, fenpyroximate, bromopropylale and
abamectin): one pyrethroid (cypermethrin) and one biocide (Siolly) against adult
females or both phytophagous mite T. unicee (Koch) and predatory m~e A. gossip;
(EI-8adry). The effect of sublethal doses of these compounds on some biological and
behavioural characteristics of T. urticae and its predator was also examined.
Abamectin had a special pOSition in both mite chemical control r integrated
mita management as: 1) It had high toxic effect and high selectivity index. 2) It
decreased prey 899 deposition to a suitable level and had a little e(fect on egg
viability. 3) It was one of the most safer compounds that allow the predator 10
consume contaminated eggs and slightly affected predator egg production.
Fenpyro)(lmate had a high safety index and had the next position in int grated mite
management. Cypermethrin may not be recommended if safety and selectivity
indexes were taken in consideration, it was one of the most eHective compounds on
prey egg consumption by the predator A. gossip < /em>; and predator egg production.
Pyridaben was the most effective on egg hatchability. Ovicidal effect of
bromopropylate was decreased as egg-age increased. Siolly did not exhi it afJY trend
concerning its ovIcidal effect on different egg stages.
Journal of Plant Protection and Pathology
Volume 28, Issue 3
March 2003
Pages 2349-2361

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