International Journal of Plant Protection

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Impact of Weather Parameters on Abundance of Major Defoliators of Soybean


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1 Department of Entomology, College of Agriculture, Nagpur (M.S.), India
     

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Studies were under taken on seasonal incidence and relationship of weather parameters on major defoliators of soybean during Kharif 2014-15 at the College of Agriculture, Nagpur. Incidence of Spodoptera litura began during 35th standard week (0.20±0.12) gradually attained maximum (1.80±0.11) during 41st standard week. Multiple regression analysis revealed that decrease in 1per cent of morning relative and evening relative humidity would lead to increase of 0.019 and 0.014 mean number of Spodoptera larvae per meter row length. Incidence of Thysanoplusia orechalsia began during 35th standard week (0.20±0.15) gradually attained maximum (1.00±0.12) during 42nd standard week. Population was decreased from 43rd standard week onwards, Regression analysis revealed that decrease in 1per cent of morning relative humidity would lead to increase of 0.010 mean number of larvae per meter row length, decrease in 1°C of morning relative humidity would lead to increase of 2.264 per cent foliage damage.

Keywords

Correlation, Regression, Incidence, Spodoptera litura, Thysanoplusia orechalsia, Weather Parameters.
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  • Kucharik, C.J. and Serbin, S.P. (2008). Impacts of recent climate change on Wisconsin corn and soybean yield trends. Environ. Res. Lett., 3: 1-10.

  • Lewin, H.D., Saroja, R.S., Sundararaju, D. and Pad-manabhan, M.D. (1979). Influence of swoing time and weather on the incidence of groundnut leafminer. Indian J. Agric. Sci., 49 : 886 - 891.

  • Logiswaran, G., Madhava Rao, S., Vasudevan, G. andAnnan, V. (1982). Influence of time of sowing and weather factors on the infestation of leafminer Aproaerema modicella Deventer and yield in rainfed groundnut. Madras Agric. J., 69: 359-363.

  • Sharma, R. (2004). Soymilk and tofa on update in Indian Context, Sopa Digest., 1:10-13.

  • Singh, O.P., Singh, K.J. and Nema, K.K. (2000). Efficacy of some seed dressing and granular insecticides against major insect pests of soybean. Pestology, 24(1): 8-11.

  • Vinaykumar, M.M., Raghvani, K.L. and Mallappa, C. (2013). Population dynamics of lepidopteran pests of soybean and their correlation with weather parameters. Res. J. Agric. Sci., 3 (4) : 841-843.

  • Wakil, W., Ghazanfar, U. M., Kwon, J.Y., Qayyum, A.M. and Nasir, F. (2010). Distribution ofHelicoverpa armgera Hubner (Lepidioptera: Noctuidae) in tomato fields and its relationship to weather factors. Entomological Res., 40 (6) : 290-297.

  • Anonymous (2013). www. Sopa.org, pp.1-2.


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  • Impact of Weather Parameters on Abundance of Major Defoliators of Soybean

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Authors

M. V. Matti
Department of Entomology, College of Agriculture, Nagpur (M.S.), India
R. O. Deotale
Department of Entomology, College of Agriculture, Nagpur (M.S.), India

Abstract


Studies were under taken on seasonal incidence and relationship of weather parameters on major defoliators of soybean during Kharif 2014-15 at the College of Agriculture, Nagpur. Incidence of Spodoptera litura began during 35th standard week (0.20±0.12) gradually attained maximum (1.80±0.11) during 41st standard week. Multiple regression analysis revealed that decrease in 1per cent of morning relative and evening relative humidity would lead to increase of 0.019 and 0.014 mean number of Spodoptera larvae per meter row length. Incidence of Thysanoplusia orechalsia began during 35th standard week (0.20±0.15) gradually attained maximum (1.00±0.12) during 42nd standard week. Population was decreased from 43rd standard week onwards, Regression analysis revealed that decrease in 1per cent of morning relative humidity would lead to increase of 0.010 mean number of larvae per meter row length, decrease in 1°C of morning relative humidity would lead to increase of 2.264 per cent foliage damage.

Keywords


Correlation, Regression, Incidence, Spodoptera litura, Thysanoplusia orechalsia, Weather Parameters.

References