Nawar, M. (2019). Temperature Effect Study on Fecundity and Development of Tetranychus urticae, Koch. (Acari-Tetranychidae) on Different Host Plants. Journal of Plant Protection and Pathology, 10(11), 553-556. doi: 10.21608/jppp.2019.67794
M. Nawar. "Temperature Effect Study on Fecundity and Development of Tetranychus urticae, Koch. (Acari-Tetranychidae) on Different Host Plants". Journal of Plant Protection and Pathology, 10, 11, 2019, 553-556. doi: 10.21608/jppp.2019.67794
Nawar, M. (2019). 'Temperature Effect Study on Fecundity and Development of Tetranychus urticae, Koch. (Acari-Tetranychidae) on Different Host Plants', Journal of Plant Protection and Pathology, 10(11), pp. 553-556. doi: 10.21608/jppp.2019.67794
Nawar, M. Temperature Effect Study on Fecundity and Development of Tetranychus urticae, Koch. (Acari-Tetranychidae) on Different Host Plants. Journal of Plant Protection and Pathology, 2019; 10(11): 553-556. doi: 10.21608/jppp.2019.67794
Temperature Effect Study on Fecundity and Development of Tetranychus urticae, Koch. (Acari-Tetranychidae) on Different Host Plants
Animal Pest Unit, Plant Protection Department, Desert Research Center.
Abstract
Spider mite, Tetranychusurticae, Koch., the most one important pests of plant in Egypt. Development and fecundity of this mite were studied on fig and tomato at three constant temperatures (20, 25 and 30°C), 60 ± 5% RH. The developmental time of immature stages ranged from 13.8 ± 1.6 & 10 ± 1.6 days at 20°C to 6.8 ±0.8 &4.6 ± 1.1 days at 30°C. The lower temperature threshold (t0) and thermal constant (k) of the immature stages were estimated to be 7.9 & 11.16°C and 119.351&85.185 degree days (DD), respectively. The average adult life span of females was determined to be 41.6 ± 3.0 & 34.8 ± 3.1 days at 20°C to 19.8 ± 1.3 & 15.1 ± 3.0 days at 30°C.
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