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Agnihotri, Meena
- Seasonal Incidence of Pod Fly, Melanagromyza obtusa (Malloch) and Its Hymenopteran Parasitoids on Pigeonpea
Abstract Views :467 |
PDF Views:125
Authors
Affiliations
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, Tamil Nadu, IN
2 Department of Entomology, G. B. Pant University of Agriculture and Technology, Pantnagar - 263 145, Uttarakhand, IN
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, Tamil Nadu, IN
2 Department of Entomology, G. B. Pant University of Agriculture and Technology, Pantnagar - 263 145, Uttarakhand, IN
Source
Journal of Biological Control, Vol 27, No 3 (2013), Pagination: 190–193Abstract
The activity of pod fly, Melanagromyza obtusa (Malloch) (Diptera: Agromyzidae) attained peak level during 46th standard week while the population of M. obtusa was minimum (31/100 pods) during 49th standard week. The peak level of weekly per cent parasitization (18.18%) was observed during 51st standard week while minimum level of weekly per cent parasitization (6.52%) was observed during 47th standard week. Simple correlation was worked out between M. obtusa population and weather parameters and it revealed that positive significant correlation with minimum temperature (r = 0.769). Correlation between parasitization and percent was not significant. The regression revealed that the various abiotic factors was found to be most influencing factor, which contributed (R2 = 0.885 and 0.863) 88.5 and 86.3 per cent variation in M. obtusa population and per cent parasitization, respectively.Keywords
Melanagromyza ootusa, Seasonal Incidence, Parasitization, Pigeonpea.Full Text
References
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- Yadav AK, Yadav S, Singh MK. 2010. Impact of climatic variation on the parasitoid – complex of Melanagromyza obtusa (Diptera : Agromyzidae). J Ecobiol. 29:161–162.
- Yadav AK, Yadav S, Singh MK. 2012. Effect of temperature on the population of parasitoids and their impact on the pest Melanagromyza obtusa (Diptera : Agromyzidae). J Env Sci. 1:45–50.
- A New Genus and Species of Pteromalidae (Hymenoptera: Chalcidoidea) from India
Abstract Views :191 |
PDF Views:131
Authors
Affiliations
1 Project Directorate of Biological Control (ICAR) P. B. No. 2491, H. A. Fann Post, Bellary Road, Hebbal Bangalore 560 024, Karnataka, IN
1 Project Directorate of Biological Control (ICAR) P. B. No. 2491, H. A. Fann Post, Bellary Road, Hebbal Bangalore 560 024, Karnataka, IN
Source
Journal of Biological Control, Vol 20, No 1 (2006), Pagination: 73-76Abstract
A new genus and a new species of Pteromalidae, viz. Indoclava Gupta et al. gen. nov. and Indoclava longissima Gupta et al. sp. nov. are described from Bhimtal region or Uttaranchal.Keywords
Indoclava gen. nov., Indoclava longissima Sp. Nov., Pteromalidae, Hymenoptera.Full Text
- Biology, Relative Parasitization of Larval Endoparasitoid Campoletis cholrideae Uchida on Heliocoverpa armigera Hübner under Sole and Chickpea-coriander Intercropping System
Abstract Views :400 |
PDF Views:150
Authors
Affiliations
1 Department of Entomology, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarkhand, IN
2 Department of Entomology and Zoology, Institute of Agriculture science, BHU, Varanasi-221005, Uttar Pradesh, IN
1 Department of Entomology, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarkhand, IN
2 Department of Entomology and Zoology, Institute of Agriculture science, BHU, Varanasi-221005, Uttar Pradesh, IN
Source
Journal of Biological Control, Vol 30, No 2 (2016), Pagination: 84-90Abstract
The Campoletis cholrideae is a single most prominent parasitoid in chickpea for major pest Heliocverpa armigera under natural ecosystem. The purpose of present study was to investigate how weather parameters and cropping system influence on the biology, per cent parasitization in sole and intercropping system, under laboratory and field conditions. In sole crop, mean parasitism by C. chlorideae on the larvae of H. armigera during 2013 and 2014 was 60.61 %, 44.66 % respectively. Egg-larval and cocoon formation to adult emergence periods 10.16 ± 0.215, 4.25 ± 2.02 days respectively and female and male parasitoid could survive with a mean longevity of 4.50 ± 2.012 and 3.25 ± 1.85 days, respectively. Higher parasitism of 76.67% occurred on 8th collection of 11th S.W March and 60.67% on 1st collection of 11th S.W of March for respective years. The progeny of sex-ratio varied in two seasons, the mean sex ratio (M:F) were 1:1.62; 1:1.07 respective years in sole crop. In intercropping ecosystem, the overall mean parasitism by C. chlorideae on larvae of H. armigera during 2013 and 2014 with 76.96 %, 66.67 % respectively. Higher parasitism was observed (90 %) on 6th collection of 11th S.W March and 80 % on 1st collection of 11th S.W of March for respective years. However there was steep escalation in female sex ratio in chickpea-coriander cropping system when compared with sole crop. The overall mean sex ratio were (M:F) is 1:1.90; 0.98:1.0 respective years in chickpea-coriander intercropping. A correlation with abiotic factors revealed a non-significant positive correlation with maximum temperature, evening relative humidity (RH), rain fall and sunshine hours. There was a negative correlation between parasitism and minimum temperature and morning RH in respective years under sole crop. In case of intercropping system, the result elucidated that a significant positive correlation exist with evening RH and rainfall (r= 0.951; r= 0.900 and r= 0.926; r= 0.931) in respective years. These results suggested that different parameters, especially cropping system and temperature, were very important for the parasitism of C. chlorideae on H. armigera.Keywords
Chickpea, coriander, intercrop, Campoletis cholrideae, Heliocverpa armigeraFull Text
References
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- Dhillon MK, Sharma HC. 2007. Survival and development of Campoletis chlorideae on various insect and crop hosts: Implications for Bt-transgenic crops. J App Entomol. 131(3): 179–185.
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