Effect of abiotic and biotic factors on incidence of pests and predator in cowpea[Vigna unguiculata (L.) walp.]

ABSTRACT

Field experiments were conducted during Kharif season of 2007-2008. The pest population was recorded in cowpea field aphids, jassid, thrips and pod borer and its highest population 116.20/15 cm shoots tip, 8.6/compound leaves, 5.87/flower bud and 0.73/flower bud and 1.8/pod, respectively. Abiotic factors like temperature, relative humidity, extent and distribution of rainfall, sunshine hour etc. influenced the infestation and stabilization of various insect pests in cowpea. The populations of aphids and pod borer influenced positively relative humidity while those of jassid was affected by temperature and sunshine hour. The negative correlation was found between aphid and maximum temperature, sunshine hour and wind speed; jassid and thrips with relative humidity and pod borer with maximum temperature and wind speed. Coccinella septempunctata was the most abundant predator of cowpea aphid and negatively correlated with aphid population.

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REFERENCES

Adati, T., Nakamura, S., Tamo, M. and Kawazu, K. (2004). Effect of temperature on development and survival of the legume pod borer (Maruca vitrata) (Fabricius) (Lepidoptera: Pyralidae) reared on a semi-synthetic diet. Appl. Ent. Zool., 39: 139-145.
Bachatly, M.A. and Malak, V.S.G.A. (2001). Evaluation of infestation and damage of cowpea by the pod borer (Etiella zinckenella) Treitschke (Lepidoptera: Pyralidae) in Egypt. Egyptian J. Agril. Res., 79: 489-497.
Duraimurugan, P. and Jagadish, A. (2002). Seasonal incidence and effect of weather parameters on the population dynamics of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) on rose. Proceeding: Resources Management in Plant Protection during twenty first-century, Hyderabad, India, 14-15 November, 2002, Volume-II, pp. 180-183.
Faleiro, J.R., Singh, K.M. and Singh, R.N.(1990). Influence of abiotic factors on the population build up of important insect pests of cowpea Vigna unguiculata (L) Walp. and their biotic agents recorded at Delhi. Indian J. Ent., 52: 75-680.
Gogoi, Inee and Dutta, B.C. (2000). Seasonal abundance of cotton jassid (Amrasca biguttula biguttula) (Ishida) on okra. J. Agrl. Sci. Soc. North East India, 13: 22-26.
Jackai, L.E.N., Ochieng, R.S. and Raulston, J.R. (1990). Mating and oviposition behaviour in the legume pod borer (Maruca testulalisGeyer). Entomologia Experimentalis et Applicata., 56: 179-186.
Ke, L.D., Fang, J.L. and Li, Z.J.(1985). Bionomics and control of the legume pod-borer (Maruca testulalis Geyer). Acta Entomologica Sinica., 28: 51-59.
Kumawat, R.L., Pareek, B.L. and Meena, B.L. (2000). Seasonal incidence of jassid and whitefly on okra and their correlation with abiotic factors. Annals Biol., 16: 167-169.
Malik, Y.P., Ram, S., Pandey, N.D. and Singh, S.V. (1989). Effect of extrinsic factors on bean aphid, Aphis craccivora Koch. Indian J. Appl. Ent., 3: 43-47.
Nair, M.R.G.K. (1986). Insects and Mites of Crops in India. I.C.A.R., New Delhi, pp. 48-69.
Oghiakhe, S., Jackai, L.E.N. and Makanjuola, W.A. (1991). Cowpea plant architecture in relation to: Pyralidae)-I. infestation and damage by the legume pod borer (Maruca testulalis Geyer) (Lepidoptera Effect of canopy structure and pod position. Insect Sci. and its Application, 12: 193-199.
Panickar, B.K. and Patel, J.R. (2001). Population dynamics of different species of thrips on chilli, cotton and pigeonpea. Indian J. Entomology, 63: 170-175.
Pradhan, S. (1987). Insect Pests of Crops. National Book Trust, New Delhi, India, pp. 67-69.
Satpathy S., Shivalingaswamy T.M., Kumar Akhilesh, Rai A.B. and Rai M. (2009).Efficacy of biopesticides and new insecticides for management of cowpea pod borer, Maruca vitrata. Symposium on international conference on Grain Legumes : Quality improvement value addition and trade, held on February 14-16, 2009 at IIPR, Kanpur, pp. 292-293.
Sharma, R.P. and Yadav, R.P. (1994). Population dynamics of bean aphid (Aphis craccivora Koch.) Entomological and its predatory coccinellid complex in relation to crop type (lentil, lathyrus and faba bean) and weather conditions. J. ntomological Res., 18: 25-36.
Shivalingaswamy T.M., Kumar Akhilesh, Satpathy S. and Rai M. (2005). Lobia mein phali vedhak keet ka prakop (Hindi).National symposium on ikaisavee shatabdi mein khadya avam prayavaran prabandhan wa sanrakchhan, held on May 15-17, 2005 at Haridwar, pp. 76.
Veeranna, R., Jayramaiah, M. and Jagadeesh, Babu.(1997). Seasonal infestation of the legume pod borer (Maruca testulalis Geyer), (Lepidoptera: Pyralidae) on cowpea at Bangalore. Flora and Fauna Jhansi,3: 119-120.
Wien, H.C. and Roesingh, C. (1980). Ethylene evolution by thrips-infested cowpea provides a basis for thrips resistance screening with ethephon sprays. Nature, UK.283: 192-194.
Yadav, L.S. and Yadav, P.R. (1983). Pest complex of cowpea (Vigna sinensis Savi) in Haryana. Bull. Ent., 24: 57-58.

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Effect of abiotic and biotic factors on incidence of pests and predator in cowpea[Vigna unguiculata (L.) walp.]

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