Light trap catch of Rice Insect Pest, Nephotettix Virescens (distant) and its relation with climatic factors.
2002
Rai, A.K. (Rajendra Agricultural University, Samastipur(India). Department of Entomology) | Khan, M.A.(Govind Ballabh Pant Universities of Agriculture and technology, Pantnagar(India). Department of Entomology)
A 26 years light trap catch study of the green leafhopper,Nephotettix virescens revealed that there was one peak catches during first fortnight of August in the kharif (main) season of rice crop. The fortnightly mean morning relatively humidity for 15 days (nymphet period) prior to light trap catch had positive effect. The other factors like sunshine hours and rainfall had positive and negative influence respectively on the population catches. Multiple regression equation fitted also showed the 22% association with morning relative humidity. A mathametical model for forecasting relating to mean morning relative humidity with GLH catches in rice season had been developed based on 26 years light trap study. Pest appearance depends upon the availability of choice food, but the peak number depends upon the availability of choice food with the climatic factors.
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