International Journal of Plant Protection

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Population Dynamics of Helicoverpa armigera in Pearl Millet


Affiliations
1 Department of Entomology, College of Agriculture, Junagadh Agriculture University, Junagadh (Gujarat), India
2 Millet Research Station (J.A.U.), Jamnagar (Gujarat), India
     

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Population dynamics of Helicoverpa armigera in pearl millet was studied during Kharif 2015 at Instructional Farm, Junagadh Agricultural University, Junagadh. The study revealed that the pest incidence commenced from seventh week after sowing in variety GHB-558 and was found active from August to September in the crop. The pest population increased in the last week of August and reaching to a peak level of 1.56 larvae per ear head. Then it was decreased (0.82 larvae/ear head) during the first week of September and remained active steady upto second week of September. Among the different parameters, maximum temperature and mean bright sunshine hours showed positive correlation whereas minimum temperature, morning relative humidity showed negative correlation with population of this pest but did not reached at significant level. However, the correlation between the pest population and evening relative humidity was significant and negative. Rainfall exhibited a non-significant and negative correlation with the pest population.

Keywords

Population Dynamics, Pearl Millet, Helicoverpa armigera.
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  • Anonymous (2016). Proceeding of pearl millet News.All India Co-ordinated Research Project on Pearl Millet. Jodhpur (RAJASTHAN) INDIA.

  • Balasubramaniain, G., Balasubramaniain, M. and Kulandaivela, R. (1981). Prediction of bollworms damaged in cotton in relation to weather factors. Madras Agric.J., 68 (10) : 657-659.

  • Balikai, A.R. (2010). Insect pest status of pearl millet [Pennisetum glaucum(L.) R.Br.] in Karnataka. Internat. J. Plant Protec., 2 : 189 190.

  • Juneja, R. P. and Raghvani, K. L. (2000).Feeding behaviour of Helcoverpa armigera (Hubner) and its damage in pearl millet. Insect Environ.,6 (3) : 141-142.

  • Juneja, R. P., Parmar, G. M., Ghelani, Y. H., Mungra, K. D., Patel, P. R. and Chaudhari, N. N. (2015). Monitoring of earhead worm Helicoverpa armigera (Hubner) through sex pheromone in pearl millet crop.Internat. J.Plant Protec., 8 (2) : 245-249.

  • Kanhare, R. D. (2010). Population dynamics, yield losses and eco-friendly management of insect pests infesting cowpea. M.Sc. (Ag.) Thesis, Junagadh Agricultural University, Junagadh, GUJARAT (INDIA).

  • Kapoor, K. N., Dhambare, S. V., Singh, O. P. and Mishra, U. S. (1982). Population dynamics of insect pests of pearl millet in Northern Madhya Pradesh, Indian J. Plant Protec., 9 (1) : 69-73.

  • Khairwal, I. S., Rai, K.N., Diwakar, B., Sharma, Y. K., Rajpurohit, B. S., Nirwan, B. and Bhattacharjee, R. (2007). Pearl millet crop: Management and seed production manual of the International Crops Research Institute for the Semi-arid Tropics. ICRISAT, Patancheru, India. pp. 1-100.

  • Patel, A. J. (1991). Population dynamics and evaluation of insecticidal spray schedules against pod borer complex of pigeonpea. M.Sc. (Ag.) Thesis, Junagadh Agricultural University, S. K. Nagar, Junagadh, GUJARAT (INDIA).

  • Patel, C.C. and Koshiya, D. J. (1999). Population dynamics of gram pod borer, H. armigera on cotton, pigeonpea and chickpea. G.A.U. Res. J., 24 (2) : 62-67.

  • Patel, D. R., Patel, J. J., Pathak, D. M. and Patel, R. R. (2013). Studies on incidence of earhead worm Helicoverpa armigera on rain fed sorghum. AGRES An Internat. J., 2 (2) : 225-231.

  • Patel, H.K., Patel,V.C. and Patel, J.R. (1970). Catalogue of crop pests of Gujarat State. Techllical Billi. Inno., 6 : 17-18.

  • Poonia, F. S. (2005). Population dynamics of Empoascakerri, a jassid pest on mungbean crop in arid regions of Rajasthan. Arid Legume for Sustainable Agriculture &Trade, 1 : 179-180.

  • Ranjith, M. T. and Prabhuraj, A. (2013). Incidence of Helicoverpa armigera (Hubner) on important field crops at Raichur viz., cotton, pigeonpea, sunflower, chickpea and sorghum. Indian J. Entomol.,75 (3) : 181-184.

  • Reddy, C. N., Singh, Y. and Singh, V. S. (2001). Influence of a biotic factors on the major insect pests of pigeonpea. Indian Journal of Entomology, 63 (3) : 211-214.

  • Steel, R. G. D. and Torrie, J. H. (1980). Principal and procedure of statistics. 2nd Ed., McGraw Hill Book Company Inc., NEW DELHI, INDIA.

  • Trapsiya, H. D. (2003). Biology, population dynamics, varietal susceptibility and chemical control of ear head worm Helicoverpa armigera on Bajra. M.Sc. (Ag.) Thesis, Junagadh Agricultural University, Junagadh, GUJARAT (INDIA).

  • Umbarkar, P.S. (2009). Seasonal incidence, varietal screening, yield losses and efficacy of insecticides against pod borer complex of green gram (Vignaradiata (L.). M.Sc. (Ag.) Thesis, Junagadh Agricultural University, Junagadh, GUJARAT (INDIA).


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  • Population Dynamics of Helicoverpa armigera in Pearl Millet

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Authors

A. B. Makwana
Department of Entomology, College of Agriculture, Junagadh Agriculture University, Junagadh (Gujarat), India
G. M. Parmar
Millet Research Station (J.A.U.), Jamnagar (Gujarat), India
Asha C. Detroja
Millet Research Station (J.A.U.), Jamnagar (Gujarat), India
M. G. Rathwa
Department of Entomology, College of Agriculture, Junagadh Agriculture University, Junagadh (Gujarat), India

Abstract


Population dynamics of Helicoverpa armigera in pearl millet was studied during Kharif 2015 at Instructional Farm, Junagadh Agricultural University, Junagadh. The study revealed that the pest incidence commenced from seventh week after sowing in variety GHB-558 and was found active from August to September in the crop. The pest population increased in the last week of August and reaching to a peak level of 1.56 larvae per ear head. Then it was decreased (0.82 larvae/ear head) during the first week of September and remained active steady upto second week of September. Among the different parameters, maximum temperature and mean bright sunshine hours showed positive correlation whereas minimum temperature, morning relative humidity showed negative correlation with population of this pest but did not reached at significant level. However, the correlation between the pest population and evening relative humidity was significant and negative. Rainfall exhibited a non-significant and negative correlation with the pest population.

Keywords


Population Dynamics, Pearl Millet, Helicoverpa armigera.

References