Influence of Weather Factors on Incidence and Severity of Tetranychus turkestani (Acari: Tetranychidae) on Mulberry

Dar, Mohd Yaqoob; Singh, A. K.; Ramegowda, G. K.; Rao, R. J.

doi:10.3923/jas.2019.504.512

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…The leaf damage severity of fall armyworm showed significant and positive correlation with evening RH (r = 0.691) and negative correlation with the maximum temperature (r= -0.237). The results were partially in coherence with the findings of Dar et al [23] who observed the significant positive correlation between the pest damage index caused by Tetranychus turkestani in mulberry and weather parameters like maximum temperature, minimum temperature and relative humidity.…”

Section: Correlation Between Weather Parameters and Incidence Of Fall Armyworm And Natural Enemies In Sorghumsupporting

confidence: 89%

Population Dynamics of Fall Armyworm, Spodoptera frugiperda (J. E. Smith) on Sorghum

Sunitha¹,

Swathi²,

Madhumathi³

et al. 2021

IJECC

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The study on seasonal incidence of fall armyworm was carried out during kharif, 2019 at Agricultural college farm, Bapatla. The oviposition of fall armyworm was observed from 34th SMW (Standard Meterological Week) and reached its peak during 40th SMW (0.03 egg masses plant-1). The larval population of fall armyworm was commenced during 35th SMW and increased gradually to a peak of 1.67 larvae plant-1 during 41st SMW. The maximum plant infestation (60.00%) and leaf damage severity rating (3.13) of fall armyworm was observed during 41st SMW. The peak activity of natural enemies was observed during 41st SMW which coincides with the larval population of fall armyworm. The correlation analysis indicated that eggmasses of fall armyworm was positively correlated with minimum temperature(r= 0.668) and wind speed (r= 0.529) while, the larval population showed significant positive correlation with maximum temperature (r= 0.029). The plant infestation caused by fall armyworm had shown significant negative correlation with maximum temperature (r= -0.633) and positive correlation with morning relative humidity (r= 0.678) and evening relative humidity (r= 0.664) whereas, the leaf damage severity rating exhibited significant positive correlation with evening relative humidity (r= 0.691). The multiple regression analysis revealed that the influence of weather parameters on the incidence of fall armyworm and natural enemies in sorghum ecosystem was more than 65% and 40%, respectively.

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Section: Correlation Between Weather Parameters and Incidence Of Fall Armyworm And Natural Enemies In Sorghumsupporting

confidence: 89%

Population Dynamics of Fall Armyworm, Spodoptera frugiperda (J. E. Smith) on Sorghum

Sunitha¹,

Swathi²,

Madhumathi³

et al. 2021

IJECC

View full text Add to dashboard Cite

show abstract

Influence of Weather Factors on Incidence and Severity of Tetranychus turkestani (Acari: Tetranychidae) on Mulberry

Cited by 1 publication

References 8 publications

Population Dynamics of Fall Armyworm, Spodoptera frugiperda (J. E. Smith) on Sorghum

Population Dynamics of Fall Armyworm, Spodoptera frugiperda (J. E. Smith) on Sorghum

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