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Volume: 3, Issue: 4, July-August, 2015
DOI: 10.7324/JABB.2015.3409

Research Article

Population build-up and seasonal abundance of spotted pod borer, Maruca vitrata (Geyer) on pigeonpea (Cajanus cajan (L) Millsp.)

Meragana Sreekanth, Mekala Ratnam, Movva Seshamahalakshmi, Yarlagadda Koteswara Rao, Edara Narayana

  Author Affiliations


Abstract

The field experiment conducted at Regional Agricultural Research Station, Lam farm, Guntur during 2013-14 on pigeonpea (Cajanus cajan (L) Millsp) yielded a good amount of information on the trend of population build up and seasonal abundance of spotted pod borer, M. vitrata. The larval population/plant gradually increased from third week of November (47th standard week) and reached peak level (12.6 larvae/plant) at the third week of December (51st standard week), which coincides with the peak flowering stage of the crop. The pest remained active up to last week of January. Highly significant correlation was obtained between M. vitrata and minimum temperature, mean temperature and wind speed with correlation coefficient (r) being -0.759, -0.815 and -0.838, respectively. Moderately significant correlation was obtained between M. vitrata and sunshine hours and evening relative humidity (RH-II) with correlation coefficients (r) being 0.656 and -0.609, respectively.

Keywords:

Maruca vitrata, Pigeonpea, Population, Seasonal incidence.



Citation: Sreekanth M., Ratnam M., Lakshmi M.S.M., Koteswara Rao Y. and Narayana E. Population build-up and seasonal abundance of spotted pod borer, Maruca vitrata (Geyer) on pigeonpea (Cajanus cajan (L) Millsp.). J App Biol Biotech. 2015; 3 (04): 043-045.


Copyright: Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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