Phytoparasitica (2003) 31 (3) - Entry of sweetpotato ...
D. Ben-Yakir, M. Chen, M.J. Berlinger, M. Teitel and M. Barak (2003)
Entry of sweetpotato whiteflies into a greenhouse: distribution in time and space
Phytoparasitica 31 (3)
Abstracts 20th Conference of the Entomological Society of Israel, Feb. 11-12, 2003
Abstract: The sweetpotato whitefly Bemisia tabaci (Gennadius) is an important pest of and vector of viral diseases to many agricultural crops. In greenhouses, ventilation vents are often covered with 50-mesh screens to restrict the entry of this pest. These screens significantly reduce the efficiency of ventilation. Determining the time and place of whitefly entry into the greenhouse will indicate when and where vents need to be covered. We studied the distribution of whiteflies around and inside a greenhouse equipped with side windows (covered with 50-mesh screens) and roof vents (open), during the autumn of 2002. Horizontally laid yellow sticky traps were used to monitor the whiteflies. Outside the greenhouse, significantly higher numbers of whiteflies were trapped on the down-wind side. Inside the greenhouse, most whiteflies were caught under the roof vents. When roof vents were closed, almost no whiteflies were caught inside the greenhouses. In contrast, closing the side windows had no effect on the number of whiteflies caught inside. Under the roof vents, most whiteflies were caught on the northern side, where air also entered. Both outside and inside, 70% of the whiteflies were caught between 7:00 and 10:00 a.m. and 25% were caught between 10:00 a.m. and 1:00 p.m. Only 5% or fewer whiteflies were caught at other times of the day and night.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): David Ben-Yakir
Research topic(s) for pests/diseases/weeds:
control - general
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Bemisia tabaci |
