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Borad, P. K.
- Population Dynamics of Aphis gossypii Glover on Coriander in Relation to Biotic and Abiotic Factors
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Authors
Affiliations
1 Department of Entomology, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
1 Department of Entomology, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
Source
International Journal of Plant Protection, Vol 8, No 2 (2015), Pagination: 372-374Abstract
Field experiment was conducted on population dynamics of Aphis gossypii Glover on coriander (Gujarat coriander 2) in relation to biotic and abiotic factors during winter season of 2011-12 and 2012-13. Incidence of aphid on coriander started from 3rd week of December (51st SMW) and continued till 1st week of March (10th SMW) with a peak level during 5th week of January (5th SMW). Minimum and mean temperature had highly significant negative association with aphid incidence during first year, whereas nonsignificant negative correlation with the pest activity during second year. The morning vapour pressure had significant negative relationship with A. gossypii during first year and non-significant negative association during second year. Remaining all the tested meteorological parameters showed non-significant relationship with aphid population on coriander crop during both the years. The biotic factors, viz., coccinellids and syrphids as well as their cumulative numbers showed highly significant positive correlation with aphid population during both the years.Keywords
Aphis gossypii, Population Dynamics, Biotic-Abiotic Factors, Coriander.
References
- Bhoi, S. R. (2008). Population dynamics, varietal susceptibility and management of sucking pests of okra. M. Sc. (Ag.) Thesis, Anand Agricultural University, Anand, GUJARAT (INDIA).
- Dabhi, M. V. (2008). Succession, population dynamics and management of major insect pests of okra [Abelmoschus esculentus (L.) Moench]. M.Sc. (Ag.) Thesis, Anand Agricultural University, Anand, GUJARAT (INDIA).
- Devi, M. N., Singh, T. K. and Devi, C. (2002). Field density of Aphis gossypii in relation to predatory and biotic factors. Uttar Pradesh J. Zool., 22 (1): 67-71.
- Ghetiya, L.V. (1992). Bionomics, population dynamics and chemical control of aphid (Aphis gossypii Glover) on coriander. M. Sc. (Ag.) Thesis, Gujarat Agricultural Universiyt, Junagadh, GUJARAT (INDIA).
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- Bio-Efficacy of Insecticides Against Conogethes punctiferalis on Castor
Abstract Views :218 |
PDF Views:1
Authors
R. D. Patel
1,
P. K. Borad
2
Affiliations
1 Main Cotton Research Station (N.A.U.), Surat, (Gujarat), IN
2 Department of Entomology, B.A. College of Agriculture, Ananad Agricultural University, Anand (Gujarat), IN
1 Main Cotton Research Station (N.A.U.), Surat, (Gujarat), IN
2 Department of Entomology, B.A. College of Agriculture, Ananad Agricultural University, Anand (Gujarat), IN
Source
International Journal of Plant Protection, Vol 9, No 2 (2016), Pagination: 409-412Abstract
Studies on bio-efficacy of insecticides against castor capsule borer, Conogethes (=Dichocrocis) punctiferalis Guenee on castor were carried out during Kharif, 2011-12. The results on efficacy of insecticides showed that chlorantraniliprole 20 SC @ 0.006 per cent and indoxacarb 14.5 SC @ 0.015 per cent were found superior and recorded 7.92 and 8.12 per cent capsule damage, respectively during spray schedule. At harvest, plots treated with chlorantraniliprole 20 SC (0.006%), indoxacarb 14.5 SC (0.015%) and emamectin benzoate 5 WG (0.002%) had found lower per cent capsules damage. Statistically higher castor seed yield was recorded in chlorantraniliprole @ 0.006% (3185 kg/ha), indoxacarb @ 0.015% (3110 kg/ha) and emamectin benzoate @ 0.002% (2760 kg/ha). However, cost benefit ratio was highest in indoxacarb 14.5 SC (1:16.62) followed by alphamethrin 10 EC (1:15.73) and chlorantraniliprole 20 SC (1:12.02).Keywords
Bio-Efficacy, Insecticides, Economics, Capsule Borer, Castor, C:B Ratio.References
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- Narayanamma, V.L., Reddy, A.V. and Singh, T.V.K. (2010). Evaluation of newer insecticides for the management of defoliators and capsule borer in castor. Indian J. Plant Prot., 38 (2): 144-146.
- Narayanamma, V.L. and Reddy, K.D. (2014 )E. valuation of newer insecticide molecules against lepidopteran pests in castor. Indian J. Ento., 76 (4): 273-278.
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