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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 6
First page : (993) Last page : (996)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7254

Seasonal Incidence of Thrips tabaci (Lind) (Thysonoptera: Thripidae) on onion, Allium cepa (L.)

Vinuthan, K. D¹, Rajashekharappa, K²*, Meghana, J¹ and Revanna Revannavar¹

¹Department of Entomology, College of Horticulture, Mudigere, Karnataka, India
²Department of Entomology, UAHS, Shivamogga, Karnataka, India
*Corresponding Author E-mail: rajukacarology@gmail.com
Received: 8.10.2018 | Revised: 14.11.2018 | Accepted: 21.11.2018  

 ABSTRACT

Studies on the seasonal incidence of Thrips tabaci during kharif-rabi and rabi-summer revealed that thrips population was high during rabi-summer (December 2014 transplanted crop). An average of 31.81 thrips per plant was recorded with peak population of 61.04 thrips per plant on 8th March 2015 and less population was noticed during kharif-rabi season (August 2014 transplanted crop). In kharif, the average thrips population was 8.47 thrips per plant with peak activity observed on 29th September 2014 (27.16 thrips/pl.). The correlation studies between thrips population and weather factors indicated that the maximum temperature was significantly positive correlated with thrips population in both the seasons, while maximum and minimum relative humidity was significantly negatively correlated. In kharif, rainfall was significantly negative correlated with thrips population.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Vinuthan, K.D., Rajashekharappa, K., Meghana, J. and Revannavar, R., Seasonal Incidence of Thrips tabaci (Lind) (Thysonoptera: Thripidae) on onion, Allium cepa (L.), Int. J. Pure App. Biosci.6(6): 993-996 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7254