author(s)
Muhammad Jahanzaib, Muhammad Aslam Khan and Sohail Haider

abstract
The environmental conditions play an important role in the development of tomato leaf curl virus disease and whitefly population. The experiment was conducted in the research area of department of Plant Pathology, University of Agriculture Faisalabad, Pakistan in April 2017. Characterization of environmental conditions conducive for whitefly population and tomato leaf curl virus disease showed positively significant correlation of temperature with whitefly population and TLCVD while negatively significant correlation with relative humidity. Rain fall and wind speed showed non-significant correlation with whitefly population and disease incidence.