volume 33 issue 2 (june 2010) : 148 - 149
SEASONAL INCIDENCE OF GRAM POD BORER, HELICOVERPA ARMIGERA (HUBNER) ON GREENGRAM
1Department of Entomology, College of Agriculture,
Junagadh Agricultural University, Junagadh – 362 001, India
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Legume Research
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volume 33 issue 2 (june 2010) : 148 - 149
SEASONAL INCIDENCE OF GRAM POD BORER, HELICOVERPA ARMIGERA (HUBNER) ON GREENGRAM
1Department of Entomology, College of Agriculture,
Junagadh Agricultural University, Junagadh – 362 001, India
ABSTRACT
Investigations were carried out on seasonal incidence of gram pod borer, Helicoverpa
armigera (Hubner) on greengram during kharif, 2008 at College Farm, Junagadh Agricultural
University, Junagadh. The pest appeared with population density of 0.34 larvae per plant during
4th week after sowing (31st standard week) and reached to a peak of 3.42 larvae per plant in 37th
standard week (10th week after sowing). Among the weather parameters, minimum temperature
(r= -0.557) and evening relative humidity (r=-0.583) exhibited highly significant negative
correlation with the gram pod borer population. Rest of the weather parameters were nonsignificantly
correlated with the pest population.
armigera (Hubner) on greengram during kharif, 2008 at College Farm, Junagadh Agricultural
University, Junagadh. The pest appeared with population density of 0.34 larvae per plant during
4th week after sowing (31st standard week) and reached to a peak of 3.42 larvae per plant in 37th
standard week (10th week after sowing). Among the weather parameters, minimum temperature
(r= -0.557) and evening relative humidity (r=-0.583) exhibited highly significant negative
correlation with the gram pod borer population. Rest of the weather parameters were nonsignificantly
correlated with the pest population.
REFERENCES
- Anonymous (2007). “Agricultural Statistics at a Glance 2008”, Web site (www.agri.gujarat.gov.in) of
- Directorate of Agriculture, Gujarat State, Gandhinagar, pp.3.
- Joshi, M. D. (2007). M.Sc. Thesis Junagadh Agricultural University Junagadh, pp. 47.
- Virani, V. R. (2000). Ph. D. Thesis The Gujarat Agricultural University, Sardar Krushinagar, pp. 183
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Published In
Legume Research