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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

2017, Vol. 5, Issue 4
Studies on the seasonal incidence of leaf footed bug, Riptortus pedestris (Fabricius) in field bean, Lablab purpureus L. and its relation with weather parameters

S Srinivasa Reddy, Cn Arendra Reddy, C Srinivas, A Manohar Rao and S Narender Reddy

The present study was carried out to find the correlation between seasonal incidence of leaf footed bug, Riptortus pedestris with weather variables during kharif 2015-16 and kharif 2016-17 respectively. The data on the seasonal incidence of leaf footed bug, R. pedestris was recorded from third week of October during 42nd standard week to 4th standard week in kharif 2015 –16. The highest incidence of R. pedestris population was observed with two peaks i.e., once at 47th standard week (3rd week of November) and second one at 49th standard week (1st week of December) with 3.5 and 3.8 bugs per plant, respectively. During kharif 2016-17 the highest incidence of R. pedestris population was recorded during 50th standard week (2nd week of December) with 3.7 bugs per plant. Correlation studies between the population of leaf footed bug, R. pedestris with preceding one week (one week lag) weather parameters during kharif 2015-16 revealed that there was a negative significant correlation with maximum temperature (-0.512*) and evaporation (-0.510*) at 5 % level of significance whereas significant positive correlation with morning relative humidity (0.071*) at 5 % level of significance. During kharif 2016-17, maximum temperature (-0.574*) and evaporation (-0.704**) were negatively significant with R. pedestris population at 5% level and 1% level of significance, respectively while morning relative humidity (0.141*) was positively significant at 5 % level of significance. Regression analysis revealed that, all weather parameters collectively influenced the R. pedestris bugs population to the extent of 78.16 per cent (R2 =0.78%) on field bean.
Pages : 1830-1834 | 458 Views | 18 Downloads
How to cite this article:
S Srinivasa Reddy, Cn Arendra Reddy, C Srinivas, A Manohar Rao, S Narender Reddy. Studies on the seasonal incidence of leaf footed bug, Riptortus pedestris (Fabricius) in field bean, Lablab purpureus L. and its relation with weather parameters. J Entomol Zool Stud 2017;5(4):1830-1834.
Journal of Entomology and Zoology Studies
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