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Sekhon, B. S.
- Biocontrol Based Management of Cotton Bollworms in the Punjab
Abstract Views :245 |
PDF Views:112
Authors
Affiliations
1 Department of Entomology, Punjab Agricultural University, Ludhiana 141 004, Punjab, IN
1 Department of Entomology, Punjab Agricultural University, Ludhiana 141 004, Punjab, IN
Source
Journal of Biological Control, Vol 16, No 2 (2002), Pagination: 121-124Abstract
Two biocontrol based IPM modules, along with Punjab Agricultural University (PAU) spray schedules were evaluated for the management of cotton bollworms. IPM module II (3 sprays each for sucking pests and cotton bollworm + 8 releases of Trichogramma chilonis @ 1,50,000/ha/week + one release of Chrysoperla carnea @ 10,000/ha) was on par with PAU spray schedule in reducing the bollworm damage and increasing the yield. When T. chilonis (Bathinda strain) was integrated with insecticides it reduced the damage of bollworm by 70.3 percent and gave higher yield by 44.5 percent over insecticides alone.Keywords
Chrysoperla carnea, Cotton Bollworms, Insecticides, IPM Module, Trichogramma chilonis.- Host Searching Capacity of Laboratory Reared and Field Collected Populations of Trichogramma chilonis Ishii
Abstract Views :216 |
PDF Views:163
Authors
Affiliations
1 Department of Entomology Punjab Agricultural University Ludhiana, 141 004, Punjab, IN
2 Nahar Sugar and Allied Industries, Ltd., Amloh, Fatehgarh Saheb, Punjab, IN
3 Regional Research Station, Bathinda, Punjab, IN
1 Department of Entomology Punjab Agricultural University Ludhiana, 141 004, Punjab, IN
2 Nahar Sugar and Allied Industries, Ltd., Amloh, Fatehgarh Saheb, Punjab, IN
3 Regional Research Station, Bathinda, Punjab, IN
Source
Journal of Biological Control, Vol 14, No 2 (2000), Pagination: 29-33Abstract
In cotton field Trichogramma chilonis could disperse as far as 9 metres to search its host, but the maximum parasitization was observed up to 2 metres. The performance of the Muktsar population was better than all other populations. The laboratory reared population was significantly inferior to all field collected populations.Keywords
Cotton, Host Searching Capacity, Populations,Trichogramma chilonis.- Role Played by Campoietis chlorideae uchida in Natural Mortality of Hejicoverpa armigera (Hubner) on Chickpea in Punjab
Abstract Views :194 |
Authors
Affiliations
1 Department of Entomology, College of Agriculture Punjab Agricultural University, Ludhiana 141004, Punjab, IN
1 Department of Entomology, College of Agriculture Punjab Agricultural University, Ludhiana 141004, Punjab, IN
Source
Journal of Biological Control, Vol 14, No 1 (2000), Pagination: 51-54Abstract
Studies were conducted to assess tbe role of natural mortality factors in Helicoverpa annigera (Hubner) on chickpea in Punjab. The larval parasitoid Campoletis chlorideae Uchida bas been recorded as the most important mortality factor. Parasitism due to C. chlorideae ranged from 0.98 to 68.50 per cent throughout the crop season. The maximum parasitism was recorded during 3rd week of February, 1999 when the minimum mean temperatures and relative humidity were 11.9°C and 95 per cent, respectively. As C.chlorideae helps in suppressing tbe pest population both at vegetative and flowering! pod formation stage or the crop, it suggests that the conservation of C. chlorideae in chickpea is important.Keywords
Campoletis chlorideae, Chickpea, Helicoverpa armigera, Parasitoid.Full Text
- Studies on the Comparative Efficacy of Trichogramma chilonis Ishii (Hymenoptera:Trichogrammatidae), Insecticides and Integration of Trichogramma with Insecticides for the Suppression of Cotton Bollworms
Abstract Views :230 |
PDF Views:119
Authors
Affiliations
1 Punjab Agricultural University, Ludhiana - 141004, IN
2 Regional Research Station, Bathinda, IN
1 Punjab Agricultural University, Ludhiana - 141004, IN
2 Regional Research Station, Bathinda, IN