| EFFECTS OF EGGPLANTS CULTIVARS ON THE POPULATION FLUCTUATION OF THE TWO-SPOTTED SPIDER MITE, TETRANYCHUS URTICAE (ACARI: TETRANYCHIDAE) UNDER FIELD CONDITION |
| Paper ID : 1045-YRC2022 |
| Authors |
|
Asmaa M Abd Allah1, Manal Sayed Ismail *2, Ahmed Hassan Aboghalia1 1Suez canal university 2faculty of Science |
| Abstract |
| The field study was carried during the growing season extended from September 2018 to April 2019 to investigate the susceptibility of eight eggplant cultivars to T. urticae infestation. Our results showed that the density of T. urticae increased in October and November in all cultivars then declined in December in all cultivars except in cv. Darcon and Anamour. Results also showed that Black Night, Fantastic, and Classic cultivars are resistant to T. urticae infestation while cv. Mandella, Melda, Black Beauty were less susceptible, Anamour and Darcon cultivars are the most susceptible ones. Phytoseiulus persimilis was recorded as a predator in the studied growing season. T. urticae mobile stages were positively correlated with temperature T°C and relative humidity RH in all eggplant cultivars except in cv. Darcon and Anamour. While, P. persimilis was positively correlated with T°C in all cultivars except in cv. Black Beauty, Anamour, and Darcon and negatively correlated with RH only in cv. Darcon and Anamour. It seems that T. urticae influenced by different climatic conditions in the growing season |
| Keywords |
| Tetranychus urticae, eggplant, cultivars, temperature, predatory mite |
| Status: Accepted (Poster Presentation) |
