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Joshi, N.
- Field Efficacy of Fungal and Bacterial Antagonists against Brown Spot of Rice
Abstract Views :218 |
PDF Views:114
Authors
Affiliations
1 Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
2 Department of Plant Pathology, IN
1 Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
2 Department of Plant Pathology, IN
Source
Journal of Biological Control, Vol 21, No 1 (2007), Pagination: 159-162Abstract
Efficacy of two antagonists, namely, Trichoderma harzianum and Pseudomonas fluorescens was evaluated against brown spot of rice under field conditions. Three sprays of P. fluorescens (Talc based) at weekly interval @10g per litre, proved effective in reducing the disease severity and increasing the yield. It reduced the severity from 35.8 percent to 24.5 percent in case of rice variety PR116 and from 20.1 percent to 8.5 percent in case of Basmati rice 386.Keywords
Brown Spot, Rice, Pseudomonas fluorescens, Trichoderma harzianum.Full Text
- Role Played by Campoietis chlorideae uchida in Natural Mortality of Hejicoverpa armigera (Hubner) on Chickpea in Punjab
Abstract Views :191 |
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
- Disconnect in Food Safety Practices in Rural Households: Personal Hygiene and its Impact on Hand Cleanliness and Prevalence of Diarrhoea
Abstract Views :187 |
PDF Views:0
Authors
Affiliations
1 Department of Community Medicine, Armed Forces Medical College, Pune, Maharashtra, IN
1 Department of Community Medicine, Armed Forces Medical College, Pune, Maharashtra, IN
Source
The Indian Practitioner, Vol 68, No 12 (2015), Pagination: 28-30Abstract
No Abstract.
- Pathogenicity of Nucleopolyhedrovirus (NPV) against Spodoptera litura (Fabricius) .
Abstract Views :147 |
PDF Views:76
Authors
Affiliations
1 department of Microbiology, Punjab Agricultural University, Ludhiana - 141004, Punjab, India, IN
2 Department of Entomology, Punjab Agricultural University, Ludhiana - 141004, Punjab, India ., IN
3 Department of Entomology, Punjab Agricultural University, Ludhiana - 141004, Punjab, India, IN
4 Department of Soil Sciences, Punjab Agricultural University, Ludhiana - 141004, Punjab, India .i, IN
1 department of Microbiology, Punjab Agricultural University, Ludhiana - 141004, Punjab, India, IN
2 Department of Entomology, Punjab Agricultural University, Ludhiana - 141004, Punjab, India ., IN
3 Department of Entomology, Punjab Agricultural University, Ludhiana - 141004, Punjab, India, IN
4 Department of Soil Sciences, Punjab Agricultural University, Ludhiana - 141004, Punjab, India .i, IN
Source
Journal of Biological Control, Vol 35, No 4 (2021), Pagination: 218 - 226Abstract
The management of Spodoptera litura by entomopathogenic Nucleopolyhedrosis Viruses (NPVs) is one of the eco-friendly methods. The present study was aimed to evaluate Nucleopolyhedrosis Virus (NPV) against S. litura and its potential as a bio-pesticide. The Occlusion Bodies (OBs) of S. litura nucleopolyhedrosis virus was isolated from infected larvae collected from cabbage field. Pathogenicity studies evaluated three NPV suspensions viz. SpltNPV-native, SpltNPV-commercial and SpltNPV-NIPHM against second and fourth instar larvae of S. litura recorded maximum mortality at 1×109 OBs/ml. The LC50 values of the SpltNPV-native, SpltNPV-commercial and SpltNPV-NIPHM suspensions against second instar larvae were 0.584, 0.540, 0.625 OBs/mm2 , respectively, which increased to 0.696, 0.620, 0.756 OBs/mm2 against the fourth instar larvae. The LT50 at 1×109 OBs/ml was found to increase from 146.33, 137.51 and 155.88 h for SpltNPV-native, SpltNPV-commercial and SpltNPV-NIPHM suspension, respectively, against the second instar larvae to 178.51, 162.07 and 187.67 h, respectively, against the fourth instar larvae. The cumulative per cent mortality, LC50 and LT50 suggested that the second instar larvae were more susceptible and easier to kill than the fourth instar larvae.Keywords
: LC50, LT50, mortality, Nucleopolyhedrosis virus, OBs, Spodoptera litura .Full Text
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