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VOL. 6, ISSUE 6 (2021)
Influence of weather parameters on population dynamics of fall armyworm Spodoptera frugiperda (J. E. Smith) on maize
Authors
Parameshwari D, Pazhanisamy M, Muralikrishnan L
Abstract
The field experiments were carried out in the farmer field at Jadamangalam village near Trichy during rabi and kharif 2019-20. The results of experiments revealed that the seasonal incidence by S. frugiperda on maize reached a peak on 46th MSW (first fortnight of November) and reduced to the second fortnight of November during rabi season, whereas during kharif, the maximum per cent infestation was noticed on 29th MSW (first fortnight of July) whereas minimum was noticed on second fortnight of October. The seasonal incidence by S. frugiperda was exerted significantly positively correlated with maximum (0.232, 0.253 & 0.031) and minimum temperature (0.232, 0.253 & 0.031) exhibited non-significant positive correlation meanwhile rainfall (-0.048, -0.152 & -0.318) and relative humidity (-0.241, -0.049 & -0.130) exhibited non-significant negative association with the FAW incidence in the number of egg masses, population of larvae and percent infestation respectively during rabi season. The kharif season indicated that maximum temperature (0.310, 0.391 & 0.490) exhibited non-significant positive correlation whereas minimum temperature (0.560, 0.421 & 0.723) exhibited significant, non-significant and highly significant positive correlation association, however, rainfall (-0.374, -0,214 & -0.297) and relative humidity (-0.430, -0.223 & -0.347) exhibited non-significant negative association was recorded with the FAW incidence in the number of egg masses, population of larvae and percent infestation respectively.
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Pages:87-90
How to cite this article:
Parameshwari D, Pazhanisamy M, Muralikrishnan L "Influence of weather parameters on population dynamics of fall armyworm <em>Spodoptera frugiperda</em> (J. E. Smith) on maize ". International Journal of Entomology Research, Vol 6, Issue 6, 2021, Pages 87-90
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