Vol. 2, Issue 6 (2015)
Association studies of citrus psylla (Diaphorina citri Kuw.) nymphs and adults with weather parameters in Nagpur Mandarin
Author(s): PN Dawane, UP Barkhade and PR Panchbhai
Abstract: The present investigation entitled, “Association studies of citrus psylla (Diaphorina citri Kuw.) nymphs and adults with weather parameters in Nagpur Mandarin” was conducted during Ambia bahar of 2009-10. Eight-year-old Nagpur mandarin orchard selected for imposing treatments was, planted at spacing of 6.0 m X 6.0 m at Futala farm, College of Agriculture, Nagpur. Present investigation had components like studies on association citrus psylla (Diaphorina citri Kuw.) nymphs and adults with weather parameters during 2009-10. Simple linear association values for seasonal incidence of citrus psylla nymphs with weather parameters during 2009-10 revealed significantly positive association of maximum temperature (p = 0.01) and minimum temperature (p = 0.05) with citrus psylla nymph abundance. The morning relative humidity and evening relative humidity were negatively correlated in significant manner (p = 0.05). Evaporation was related in positively significant manner (p = 0.05). The association of seasonal incidence of citrus psylla adults with weather parameters revealed no association in significant manner. Weather data during 2009-10 was obtained from Meteorological observatory in College of Agriculture, Nagpur, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. It was mostly associated with the flushing cycle indicating the preference of the pest for new flush. Citrus psylla prefers warm conditions with lower humidity regime which is evident from population rise in month of February and March.
Pages: 57-60 | 190 Views 17 Downloads
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How to cite this article:
PN Dawane, UP Barkhade, PR Panchbhai. Association studies of citrus psylla (Diaphorina citri Kuw.) nymphs and adults with weather parameters in Nagpur Mandarin. Int J Chem Stud 2015;2(6):57-60.
