International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (1232) Last page : (1239)
Article doi: http://dx.doi.org/10.18782/2320-7051.5419
Studies on Population Dynamics of Spotted Pod Borer Maruca vitrata in Dolichos Bean, Lablab purpureus L. and their Relation with Abiotic Factors
S. Srinivasa Reddy*, C. Narendra Reddy, C. Srinivas, A. Manohar Rao and S. Narender Reddy
Dept. of Entomology, College of Agriculture, Rajendranagar, PJTSAU, Hyderabad-500030
*Corresponding Author E-mail: srinivasreddyagri@gmail.com
Received: 14.07.2017 | Revised: 23.07.2017 | Accepted: 25.07.2017
ABSTRACT
The present study was carried out to find the correlation between population dynamics of spotted pod borer, Maruca vitrata Geyer with weather variables during kharif 2015-16 and kharif 2016-17 respectively. The results on the seasonal incidence of M. vitrata during kharif 2015-16 revealed that the highest Maruca larval population was recorded during
47th and 49th standard weeks with 3.2 and 3.6 larvae per plant, respectively. During kharif
2016-17 the incidence of M. vitrata on field bean was commenced from 45th standard week and continued upto 4th standard week. The peak incidence of M. vitrata population was recorded at 50th standard week with 4.3 larvae per plant. The study on relationship between the M. vitrata larval population with preceding one week (one week lag) weather parameters during kharif 2015-16 revealed that there was a significant negative correlation was observed with maximum temperature (-0.351*) at 5 % level of significance whereas significant positive correlation with evening relative humidity (0.129*) at 5 % level of significance. During kharif 2016-17 maximum temperature (-0.553*), minimum temperature (-0.575*) and evaporation
(-0.581*) were negatively significant with M. vitrata larval population at 5% level while, mean temperature (-0.639**) was negatively significant with spotted pod borer larval population at 1% level.
Key words: Population dynamics, Spotted pod borer, M. vitrata, correlation, Multiple regression.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Reddy*, S.S., Reddy, C.N., Srinivas, C., Rao, A.M. and Reddy, S.N., Studies on Population Dynamics of Spotted Pod Borer Maruca vitrata in Dolichos Bean, Lablab purpureus L. and their Relation with Abiotic Factors, Int. J. Pure App. Biosci.5(4): 1232-1239 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5419
