Atie Arab^*(1) Rawa Youssef⁽¹⁾ and Deena Faeud⁽¹⁾

(1). Agricultural Scientific Research Centre in Lattakia, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(*Corresponding author: Dr. Atie Arab. Email: atiearab@hotmail.com).

Received: 20/05/2017                                Accepted: 23/09/2017

Abstract

Two experiments (in vitro and in greenhouse) were carried out at Agricultural Scientific Research Centre in Lattakia during 2014, to evaluate the efficacy of some fungicides, insecticides, acaricides and foliar fertilizers (methomyl, chlorpyriphos, flubendiamide, lufenuron, propamocarb hydrochloride, thiophanate-methyl, chlorothalonil, copper oxychloride, K₂O35%+SO₃45%, abamectin) against two-spotted spider mite Tetranychus urticae Koch. on common beans plants (Phaseolus vulgaris L.) which were artificially infected with sensitive strain of two-spotted spider mite reared in the laboratory. The effectiveness of pesticides and foliar fertilizer were tested at the recommended concentrations. Results showed that some evaluated pesticides effectively reduced two–spotted spider mite population comparing with acaricide Abamecten. The insecticides chlorpyriphos and methomyl showed high effectiveness (100% and 89.11%) respectively, after 3 days of treatment under laboratory condition. Foliar fertilizer K₂O35%+SO₃45%, had relatively good efficacy (74.68%) with no significant differences versus acaricid Abamectin after 3 days of treatment under the greenhouse condition. On the other hand, the effectiveness of the fungicide chlorothalonill was relatively low (31.53%), after 7 days of treatment in the laboratory.

Key words: Two-spotted spider mite, Tetranychus urticae, Chemical pesticides, Foliar fertilizers.

Full paper in Arabic: PDF