Seasonal changes in whitefly numbers and their influence on incidence of sweetpotato chlorotic stunt virus and sweetpotato virus disease in sweetpotato in Uganda

Authors
Alicai, T Adipala, E Gibson, RW
Citation
T. Alicai et al., Seasonal changes in whitefly numbers and their influence on incidence of sweetpotato chlorotic stunt virus and sweetpotato virus disease in sweetpotato in Uganda, INT J PEST, 45(1), 1999, pp. 51-55
Citations number
15
Categorie Soggetti
Entomology/Pest Control
Journal title
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
ISSN journal
09670874 → ACNP
Volume
45
Issue
1
Year of publication
1999
Pages
51 - 55
Database
ISI
SICI code
0967-0874(199901/03)45:1<51:SCIWNA>2.0.ZU;2-8
Abstract
Variation in whitefly numbers on sweetpotato and incidence of sweetpotato c hlorotic stunt virus (SPCSV) and sweetpotato virus disease (SPVD) were stud ied. There were significant differences (P < 0.05) in monthly whitefly numb ers. Overall, whitefly populations increased with temperature and decreased with rainfall within a month. Peak whitefly populations occurred in the ho t dry season, but whitefly numbers were generally greatest on crops 3-4 mon ths old. Incidence of SPVD increased with crop age. Planting date only affe cted incidence of SPCSV in the second season, and whitefly population was n ot closely related to SPCSV incidence.