The Effect of Two Spotted Spider Mite in the Presence of the ‎Predator Phytoseiulus Persimilis Athias-Henroit on the Quality ‎of Some Climbing Beans Cultivars under Greenhouse ‎Conditions ‎

Riad  Tofik Zidan(1) Mohammad Ahmad  Ahmad(2) and Alisar Nadim Shaabow*(1)

(1). Department of Horticulture, Faculty of Agriculture, Tishreen University, Lattakia, Syria.

(2). Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria.

(*Corresponding author:  Eng. Alisar Shaabow. E-Mail:

Received: 24/12/2018                               Accepted: 24/02/2019


The effect of the infection of the  two spotted spider mites and using the predatory mite Phytoseiulus persimilis Athias-Henroit, as biological control agent to control it,  and its effect on the quality of the bods of climbing beans cultivars: Kentucky wonder white, Blue lake, Fatima, Purple Queen, Zilioni and Gigant.  The study was carried out at a greenhouse at Lattakia Center for Rearing Natural Enemies during 2017 and 2018. Results showed a negative effect of T. urticae on the pod’s quality that it decreased its contents of  soluble solids, fibers, dry matter, protein and vitamin C, and it increased nitrates contents. While  releasing the predatory mite P. persimilis on the infected plants controlled this pest and improved pod’s quality, and that it increased its contents of  soluble solids, fibers, dry matter, protein and vitamin C, and conversely it decreased nitrates. In terms of Beans cultivars the results showed that the higher content of dry matter was attained in Kentucky wonder white and Blue lake cultivars’ pods, while the higher content of  soluble solids, fibers, protein, vitamin C, and the lower content of nitrates was notices in Fatima’s pods.

Key words: Climbing bean, Greenhouse, Cultivar, Tetranychus urticae, Phytoseiulus Persimilis

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Identification the Damage and Species Structure of Root-Knot Nematode Meloidogyne spp. on Cucumber in Greenhouses

Mazen Y. Al Body*(1) Reem Yousef (2) and Hossam Saliba Malas(3)

(1). Latakia Research Center, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(2). Faculty of Agriculture, Al-Baath University, Homs, Syria.

(3). Homs Research Center, GCSAR, Damascus, Syria.

(*Corresponding author: Dr. Mazen Youssef Al Body. E-Mail:

Received: 23/04/2018                                Accepted: 05/08/2018


A field survey was carried out in 34 greenhouses of cucumbers in the Syrian coast in 16 villages belonging to the governorates of Latakia and Tartous, in order to determine the incidence and severity of root-knot nematode, in addition to determinate the structure of the species in the adult female by perineal patterns morphology and taking  the  biometric measurements of the larvae at the second stage, since March until the end of June of the season 2014/2015. The results of the study on root samples showed that the incidence of root-knotted nematodes ranged between (20- 100%) with an average of 59%. The severity of the injury according to the scale (Bridge and Page, 1980) was 0.4- 4.2 with an average of 1.67. The results showed the presence of three main species belong to the species Meloidogyne:  M. incognita, M. javanica M. arenaria, and the percentage of the prevalence of 50.98%, 47.55%, 1.47% respectively. While M. hapla species was not recorded in the study area.

Keyword: Root- knot nematode, Severity of infection, Structure identification, Cucumber, Greenhouse.

Full Paper in Arabic: PDF