Sreekanth, M. and Ratnam, M. and Seshamahalakshmi, M. and et al, . (2015) Population build-up and seasonal abundance of spotted pod borer, Maruca vitrata (Geyer) on pigeonpea (Cajanus cajan (L) Millsp.). Journal of Applied Biology & Biotechnology, 3 (4). pp. 43-45.
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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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Maruca vitrata, Pigeonpea, Population, Seasonal incidence |
| Author Affiliation: | Associate Director of Research ANGRAU RARS, Lam, Guntur, Andhra Pradesh, India. |
| Subjects: | Plant Protection |
| Divisions: | Pigeonpea |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 10 Jan 2017 06:53 |
| Last Modified: | 10 Jan 2017 06:53 |
| Official URL: | http://dx.doi.org/10.7324/JABB.2015.3409 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/14672 |
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