Spatio-Temporal Patterns of Mungbean Yellow Mosaic Virus and White Fly Population in Relation to Epidemiological Factors

摘要

The present study was designed to investigate spatio-temporal pattern of mungbean yellow mosaic virus [MYMV] and its vector in relation to epidemiological conditions i.e., minimum and maximum temperature, rainfall, wind speed and relative humidity on four commercially grown mungbean [Vigna radiate (L.) Wilczek.] varieties namely M-6, NM-51, NM-92 and AZRI-06. The study was conducted in experimental area of the Department of Plant Pathology, University of Agriculture Faisalabad under randomized complete block design during month of 15 June 2016. AZRI-06 was found the most effective for cultivation under prevailing environmental conditions. Spatial and temporal pattern of MYMV and its vector demonstrated that all environmental variables were significantly correlated with whitefly population and disease severity. MYMV disease severity was recorded maximum at minimum and maximum temperature 17 and 29.9°C, respectively relative humidity 67%, rain fall 5.5 mm and wind speed 1 km/h. Similarly, whitefly population was recorded maximum at minimum temperature 15°C, maximum temperature 29°C, relative humidity 69% and rainfall and wind speed 5.1 mm and 4.8 km/h. It was concluded that with progress in distance and time, temperature (minimum and maximum), wind speed, rainfall and relative humidity, the MYMV disease incidence and its vector populations also increased.