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Joshi, Neelam
- Bio-Efficacy of DOR Bt, a Bacillus thuringiensis formulation against Rice Leaf Folder, Cnaphalocrosis medinalis (Guenee) in Punjab
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Authors
Affiliations
1 Department of Entomology, Punjab Agricultural University, Ludhiana, 141004, Punjab, IN
1 Department of Entomology, Punjab Agricultural University, Ludhiana, 141004, Punjab, IN
Source
Journal of Biological Control, Vol 22, No 2 (2008), Pagination: 475-477Abstract
The studies on bio-efficacy of DOR Bt, a Bacillus thuringiensis formulation against rice leaf folder, Cuaphalocrosis mediualis (Guenee) in Punjab were conducted for three years) during 2005 to 2007, Three dosages of DOR Bt (1.0, 1.5 and 2.0 Kg/ha) were applied on appearance of the pest and were compared with chemical control (monocrotophos 36 SI. @1.4 l/ha) and untreated control. After 45 days of transplanting the lowest mean incidence (1.38%) was recorded in higher dose (2,0 kg/ha) of DOR Bt followed by monocrotophos (l.44%) and incidence in these two was significantly lower than all other treatments. After 60 days of transplanting the lowest mean incidence (1.08%) was observed in monocrotophos, which was significantly lower than all other treatments except higher dose (2,0 kg/ha) of DOR Bt (1.11%), which was also significantly lower than all other treatments. The maximum mean yield (61.12 q/ha) was harvested from monocrotophos which was also significantly higher than all other treatments except higher dose (2.0 kg/ha) of DOR Bt (60,75 q/ha). Significantly lower yield was obtained from control plot (53,81%). It can be concluded that DOR Bt @ 2.0 kg/ha was as effective as monocrotophos 36 St. @ 1,4 l/ha in controlling the rice leaf folder and increasing the grain yield of rice.Keywords
DOR Bt, Rice Leaf Folder, Rice.Full Text
- Morphological and Biochemical Characterization of Bacillus thuringiensis Berliner Isolates and their Evaluation against Plutella xylostella Linnaeus
Abstract Views :246 |
PDF Views:164
Authors
Affiliations
1 Department of Microbiology, Punjab Agricultural University Ludhiana 141 004, Punjab, IN
1 Department of Microbiology, Punjab Agricultural University Ludhiana 141 004, Punjab, IN
Source
Journal of Biological Control, Vol 20, No 2 (2006), Pagination: 191-195Abstract
Eleven isolates of Bacillus thuringiensis were morphologically and biochemically characterized and evaluated for iasecticidal activity against Plutella xylostella Linnaeus under field-cum-laboratory conditions. All the isolates were gram positive, rod shaped, spore forming and showed typical colony morphology with mucoid or glistening surfaces having entire edges and density ranging between translucent to opaque. Glucose was fermented by all the cultures only with acid production. Xylose and Mannitol were fermented by Bt d and Bt VK isolates, respectively. All cultures were catalase positive, oxidase positive, nitrate reducing (except Bt d), degraded tyrosine, hydrolysed casein and starch and utilized citrate as a carbon source. Results of bioassay studies revealed that four isolates, namely, Bt 5, 4D4, Bt 9 and MTCC 868 caused complete mortality of the second instar larvae of Plutella xylostella within 96 hours at uniform concentration of 109 spores/ml.Keywords
Bacillus thuringiensis, Bioassay, Insecticidal Activity, Plutella xylostellu.Full Text
- Fungal Isolates of Carrot Weed, Parthenium hysterophorus L. from Punjab
Abstract Views :201 |
PDF Views:125
Authors
Affiliations
1 Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
1 Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
Source
Journal of Biological Control, Vol 15, No 1 (2001), Pagination: 101-102Abstract
The survey on Parthenium hysterophorus conducted in six districts of Punjab during November, 1999 to January, 2000 revealed three species of fungi, viz. Alternaria alternata, Sclerotium sp. And Aspergillus niger infecting P. hysterophorus.Keywords
Fungal Isolates, Parthenium hysterophorus.Full Text
- Sexual Dimorphism in Primary Canines of Preschoolers in Gujarati Population - A Pilot Study
Abstract Views :185 |
PDF Views:116
Authors
Affiliations
1 Department of pedodontics and preventive dentistry, K.M. Shah Denatl College and Hospital, Sumandeep Vidyapeeth University, At. and Po Piparia, Ta. Waghodia, Dist. Vadodara-391760, IN
1 Department of pedodontics and preventive dentistry, K.M. Shah Denatl College and Hospital, Sumandeep Vidyapeeth University, At. and Po Piparia, Ta. Waghodia, Dist. Vadodara-391760, IN
Source
SMU Medical Journal, Vol 3, No 2 (2016), Pagination: 193-204Abstract
Non existence of any data of sexual dimorphism in primary canines of gujarati population. The study comprised of preschoolers (30 males and 30 females). Mesiodistal dimensions of primary mandibular canines were measured at the maximum mesiodistal width intraorally using sterilized stainless steel dividers and the values were subjected to statistical analysis. Mean value of mesiodistal dimension of primary canines for males was 7.01mm and for the females it was 5.91mm.So male children were sexually more dimorphic than female children. For males the mean value of mesiodistal dimension of primary maxillary canines was 7.21mm and for mandible it was 6.82mm which was statistically significant and for female the mean value of mesiodistal dimension of primary maxillary canines was 6mm and for mandible it was 5.82mm which was statistically not significant. So maxillary canines in males were sexually more dimorphic than mandibular canines. Male children are sexually more dimorphic than female children. Maxillary canines in males were sexually more dimorphic than mandibular canines.Keywords
Primary Canine Width, Sexual Dimorphism, Forensic Dentistry.Full Text
- Bioformulations for Management of Pod Borer, Helicoverpa armigera (Hubner) in Mungbean (Vigna radiata L.)
Abstract Views :326 |
PDF Views:171
Authors
Affiliations
1 Department of Entomology, Punjab Agricultural University, Ludhiana-141004, Punjab, IN
1 Department of Entomology, Punjab Agricultural University, Ludhiana-141004, Punjab, IN
Source
Journal of Biological Control, Vol 33, No 1 (2019), Pagination: 76-79Abstract
Effectiveness of bioformulations was tested against pod borer, Helicoverpa armigera (Hubner) in mungbean during Kharif 2015 and 2016 at Punjab Agricultural University, Ludhiana. Among the bioformulations the per cent pod damage and yield varied from 21.43 to 24.49 per cent and 5.50 to 8.53 q/ha respectively. During Kharif 2016, per cent pod damage and yield varied from 12.00 to 15.69 per cent and 6.30 to 9.33 q/ha respectivley. The chemical treatment Chlorpyrifos 20 EC (3.75 l/ha) was most effective in terms of pod damage reduction and yield of mungbean. The Bt formulations PDBC-BT1 and NBAIR-BTG4 (2%) and both doses of Delfin WG (1 and 2Kg/ha) were equally effective in controlling the H. armigera pod damage when compared to Chlorpyrifos 20EC. Myco Jaal (commercial formulation of Beauveria bassiana) was not effective in controlling the pod borer as compared to B. thuringiensis formulations in mungbean. The B. thuringiensis formulations Delfin (commercial) and PDBC/NBAIR (2%) effectively reduced the pod damage by H. armigera in mungbean and can be integrated in IPM programme for pulse crop protection.Keywords
Bioformulations, Helicoverpa armigera, Mungbean, Pod Damage.Full Text
References
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- Chitinase Enzyme Activity and Pathogenicity of Lecanicillium lecanii Against Mustard Aphid Lipaphis erysimi (Kalt.)
Abstract Views :106 |
PDF Views:69
Authors
Affiliations
1 Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
2 Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
3 Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
1 Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
2 Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
3 Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141004, Punjab, IN
Source
Indian Journal of Entomology, Vol 84, No 4 (2022), Pagination: 833-836Abstract
Lecanicillium lecanii (Zimmerman) Zare and Gams is an entomopathogenic fungi used as an alternative biocontrol agent against crop pests. Lipaphis erysimi (Kalt.) is an important pest of Brassica family. The present study evaluates the efficacy of three Lecanicillium lecanii isolates against the nymphs of Lipaphis erysimi (Kalt.). Bioassay revealed nymphal mortality as 66.68, 62.23 and 42.50% of L. lecanii NIPHM, L. lecanii MTCC 956 and L. lecanii MTCC 2056, respectively at maximum concentration (@12 g/ l). Extracellular enzyme activity of fungal isolates when evaluated revealed variation in the level of enzyme secretion. The maximum chitinase and n-acetyl-β-D-hexosaminidase activity (0.48 and 0.41 U/ ml) were observed in L. lecanii NIPHM on 6th day of incubation.Keywords
Lecanicillium lecanii, Lipaphis erysimi, nymphs, mortality, chitinase, bioassay, biocontrol, Brassica family, mortality, N-acetyl-β-D-hexosaminidaseFull Text
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