Effect of Some Bean Cultivars on Numerical Increasing of the Predatory Mite Phytoseiulus persimilis Athias-Henriot

Alisar Shaabow (1)*, Mohammad Ahmad(2) and Riad  Zidan (3)

(1). General Commission Agriculture scientific Research , Lattakia, Syria

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

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

(*Corresponding author: Dr. Alisar Shaabow. E-Mail: alisar.nadeem@yahoo.com)

Received: 20/12/2021        Accepted:8/03/2022

Abstract: 

The study was conducted during 2018, at Latakia center for rearing natural enemies, the study aimed to test three cultivars of climbing beans: Aya, Blue lake, and Zilioni gigant, to determine the most suitable cultivar for quantitative production of the predatory mite, Phytoseiulus persimilis Athias-Henroit and its use in predator breeding programs, to control the two spotted spider mite Tetranychus urticae Koch. Results showed a divergence between the studied cultivars in terms of infestation with  T. urticae and reproduction speed of P. persimilis. It was found that Zilioni gigant is the most sensitive cultivar to the pest, and the most suitable for the increasing and culturing of predator compare to other two cultivars Aya and Blue lake. The average pest numbers – reached 2570 individuals/leaflet on Zilioni gigant cultivar, compared to 1740 and 1055 individuals/leaflet on Blue lake and Aya, respectively, and the average numbers of predators reached 300 individuals/leaflet on Zilioni gigant, compared to 240, 210 individuals/leaflet on Blue lake and Aya respectively.

Key words: Tetranychus urticae Koch, Phytoseiulus persimilis Athias-Henroit, Biological control, Bean, Cultivar.

Full paper in Arabic: pdf