SEASONAL INCIDENCE OF FLEA BEETLE [CHAETOCHNEMA INDICA KLSEI ON SORGHUM
Department of Entomology, N.M. College of Agriculture, Naysari Agricultural University
D.R. PATEL' AND M.S. PUROHIT
Studies on population dynamics of flea beetle, Chaetochnema indica Klse infesting sorghum was made during rabi 2006-07, 2007-08 and khant 2007-08, 2008-09 seasons at Agricultural Research Station, N.A.U., Tanchha, Dist. Bharuch. During the rabi season, incidence of flea beetles began from second week of November and continued up to first week of February with a peak activity in first week of January, while in khant season, flea beetles appeared from second week of August and remained till harvesting of crop. The peak activity was observed during first week of November. Flea beetle population was positively influenced by maximum temperature, wind velocity and sunshine; whereas, it was negatively influenced by minimum temperature, morning relative humidity, evening relative humidity, mean relative humidity and the number of rainy days.