National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The incidence of insect pests and natural enemy population was studied at Main Agricultural Research Station (MARS), Dharwad, University of Agricultural sciences, Dharwad. In sunflower ecosystem 14 insects pest and 10 natural enemies (Predators) were recorded during the study. The Amrasca biguttula biguttula (Ishida) population was higher during vegetative to reproductive stage of the crop and peaked at 43rd and 46th SMW respectively, during 2015 and 2016. There was a significant and positive correlation between leafhopper population and maximum temperature. The correlation with all the other weather parameters was significant and negative. The incidence of Spilarctia obliqua (Walker) attained a peak at 42nd SMW during both 2015 and 2016. The correlation between their population and weather parameters was found to be non-significant during both the seasons (2015 & 2016). The predatory population prevailed throughout the cropping period during both the seasons. The mean predatory population was highest in 42nd SMW and 46th SMW during 2015. However, their maximum incidence was recorded during 40th SMW and 42nd SMW during 2016.
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