Indian Journal of Entomology
Year : 2014, Volume : 76, Issue : 3
First page : ( 202) Last page : ( 206)
Print ISSN : 0367-8288. Online ISSN : 0974-8172.

Seasonal incidence and damage of major insect pests of pigeon pea, Cajanus cajan (L.)

Sujithra M., Chander Subhash

Division of Entomology, Indian Agricultural Research Institute, New Delhi-110012

Online published on 29 August, 2014.

Abstract

Seasonal dynamics of insect pests in pigeonpea cultivar, Pusa 992 during kharif 2011 and kharif 2012 revealed that pest activity commenced from 36^th standard meteorological week (SMW) and continued until 46^th SMW. The 38^th and 39^th SMW were found to be more congenial for pest attack in pigeon pea. Highest larval population of Maruca vitrata was found to be 8.10 and 17.77 larva per plant while that of Grapholita critica was 5.77 and 6.07 larva per plant during two years, respectively. During kharif 2012, pod borer complex caused 19.11 per cent pod damage that could be attributed to M. vitrata (9.7%), pod fly (5.3%), gram pod borer (2.6%) and leaf webber (2.3%).To undertake an effective IPM strategy in pigeonpea crop, location specific information on occurrence and seasonal dynamics of insect pests is indispensible.

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Keywords

Maruca vitrata, Pigeon pea, Pod borer, Pod damage.

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