SEASONAL INCIDENCE OF TOBACCO CAPSULE BORER, HELICOVERPA ARMIGERA (HUBNER) HARDWICK ON BIDI TOBACCO (SEED CROP) IN MIDDLE GUJARAT

  • C. G. SOLANKI, C. B. DHOBI*, M. V. PATEL D. M. MEHTA SEASONAL INCIDENCE OF TOBACCO CAPSULE BORER, HELICOVERPA ARMIGERA (HUBNER) HARDWICK ON BIDI TOBACCO (SEED CROP) IN MIDDLE GUJARAT C. G. SOLANKI, C. B. DHOBI*, M. V. PATEL AND D. M. MEHTA ALL INDIA COORDINATED RESEARCH PROJECT ON BIOLOGICAL CONTROL, ANAND AGRICULTURAL UNIVERSITY, ANAND 388 110. (GUJARAT) INDIA. Corresponding author’s e-mail: chiragdhobi@gmail.com

Abstract

ABSTRACT:

A field experiment was conducted to study the seasonal incidence of tobacco capsule borer, Helicoverpa armigera (Hubner) Hardwick on tobacco (seed crop) during rabi  2011-12. Peak incidence of H. armigera eggs was recorded during December second fortnight and incidence of larvae was peak during January first fortnight. During cropping period H. armigera egg load ranged from 0.14 to 1.80 eggs per plant whereas, larvae ranged from 0.18 to 0.52 larvae per plant. Temperature, vapor pressure, relative humidity (r =0.600*) showed the positive correlation with incidence of H. armigera eggs while negative correlation with evaporation (r= -0.656**), bright sunshine, wind speed, morning vapor pressure deficit, evening vapor pressure deficit and mean vapor pressure deficit Whereas morning relative humidity, evening relative humidity and mean relative humidity indicated positive relation with incidence of H. armigera larvae while negative correlation with evaporation (-0.706**), bright sunshine, wind speed, maximum temperature, minimum temperature, mean temperature, morning vapor pressure, evening vapor pressure, mean vapor pressure, morning vapor pressure deficit, evening vapor pressure deficit and mean vapor pressure deficit.

KEY WORDS: Seasonal incidence, Tobacco, H.armigera, Meteorological parameters.

References

REFERENCES:
Anonymous, (2002). Fifty years of tobacco research, Bidi Tobacco Research Station, Gujarat Agriculture University, Anand, p. 4.
Anonymous, (2013). http//www.aau.in.
Bijjur, S. and Verma, S. (1996). Effect of abiotic factors on the pests of pea and natural enemies. Ind. J. Ent., 57 (3) : 233-239.
Krishnamurthy, V. (2009).Tobacco Research in India: Opportunities and
Challenges. National Symposium on Tobacco- 2009: Challenges and Opportunities held at CTRI, Rajahmundry, Andhrapradesh during Nov. 24-26.
Kumar, R. J. and Durairaj, C. (2012). Population dynamics of gram pod borer (Helicoverpa armigera) in relation to weather factors under Tamil Nadu condition. J. Food Leg. 25 (1) : 83-85.
Shivanna, B.K., Girish, M. R., Shruthi, H., Shilpa, M. E., Vikas, H.M., Mallikarjuna, G.B., Harishbabu, S., Shivanna , S., Basavaraj, M.K. (2012) Bioecology and management of bud worm, Helicoverpa armigera (Hb.) on FCV Tobacco. Intern. J. Sci. Nature 3(4): 892-899.
Singh, A., (2010). Tobacco, p: 153.
How to Cite
D. M. MEHTA, C. G. SOLANKI, C. B. DHOBI*, M. V. PATEL. SEASONAL INCIDENCE OF TOBACCO CAPSULE BORER, HELICOVERPA ARMIGERA (HUBNER) HARDWICK ON BIDI TOBACCO (SEED CROP) IN MIDDLE GUJARAT. LIFE SCIENCES LEAFLETS, [S.l.], v. 59, dec. 2014. ISSN 0976-1098. Available at: <http://petsd.org/ojs/index.php/lifesciencesleaflets/article/view/217>. Date accessed: 18 oct. 2017.

Keywords

easonal incidence, Tobacco, H.armigera, Meteorological parameters.