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Mallapur, C. P.
- Suitability of Different Grain Media for Mass Culturing of the Fungal Entomopathogen, Acremonium zeylanicum (petch) W. Gams and H. C. Evans
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PDF Views:140
Authors
Affiliations
1 Department of Agricultural Entomology, College of Agriculture, University of Agricultural Sciences, Dharwad, 580005, Karnataka, IN
1 Department of Agricultural Entomology, College of Agriculture, University of Agricultural Sciences, Dharwad, 580005, Karnataka, IN
Source
Journal of Biological Control, Vol 25, No 3 (2011), Pagination: 236-238Abstract
Evaluation of food grains for suitability as substrates for mass production of the fungus, Acremonium zeylanicum (Petch) W. Garns and H. C. Evans revealed that the spore count increased with increase in duration of incubation period after inoculation till harvesting. Rice and sorghum grain served as potential substrates for conidial production of A. zeylanicum which yielded 9.15 × 108 and 8.33 × 108 conidia/g of substrate, respectively, 15 days after inoculation. Maize and bajra were next best alternatives. However, the other materials like ragi, bengalgram and wheat did not serve as efficient food source for mass production of the fungus.Keywords
Acremonium zeylanicum, Entomopathogenic Fungi, Mass Production, Natural Substrates.Full Text
References
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- Genetic Variability of Brown Lacewing, Micromus Igorotus Banks (Haemerobidae: Neuroptera) and Dipha Aphidivora (Meyrick) (Pyralidae: Lepidoptera) Through Rapd Markers in Sugarcane Ecosystem
Abstract Views :350 |
Authors
Affiliations
1 Department of Entomology, University of Agricultural Sciences, Dharwad, Karnataka, IN
1 Department of Entomology, University of Agricultural Sciences, Dharwad, Karnataka, IN
Source
International Journal of Plant Protection, Vol 7, No 2 (2014), Pagination: 281-286Abstract
This study used 10 RAPD markers, to provide insight into the genetic variability through, molecular characterization of brown lacewing and Dipha aphidivora from different geographical locations under laboratory conditions. There existed variation in the DNA profiling among all samples. The dendrogram constructed using symmetric matrix of different samples resulted into two major clusters. The similairity matrix pertaining to different isolates of Micromus igorotus and Dipha aphidivora revealed that the similarity co-efficient ranged from 0.5-0.80 and 0.57-0.80, respectively. The highest genetic similarity index (0.80) of Micromus igorotus was seen between the isolates from Bangalore and Poona followed by 0.6 between the isolates from Bangalore and both Dharwad and Bagalkot. However, the highest genetic similarity index of 0.8 was seen between the isolates Dipha aphidivora from Assam and Poona followed by 0.57 was seen between Bangalore and Dharwad and also from Bangalore and Sameerwadi (Bagalkot).Keywords
Genetic Similarity, Molecular Chacterization, Micromus igorotus, Dipha aphidivora, RAPD, PCR
- Efficacy of Acrernonium zeylanicum against Sugarcane Woolly Aphid under Laboratory Conditions
Abstract Views :226 |
PDF Views:135
Authors
Affiliations
1 Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad 580 005, Karnataka, IN
1 Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad 580 005, Karnataka, IN
Source
Journal of Biological Control, Vol 25, No 2 (2011), Pagination: 124-126Abstract
The fungus, Acremonium zeylanicum (Petch) W. Gams and H.C. Evans, was found infectious to sugarcane woolly aphid, Ceratovacuna lanigera Zehntner and caused differential mortality of different instars at varied concentrations. Studies on the efficacy of the entomopathogenic fungus revealed that the mortality of aphids increased with increase in concentration and time of application. First instar nymphs showed the highest mortality (92.5%) at 1x1010 conidia 1-1 and as the stage of the insect advanced, the mortality rate declined. On the contrary, lower mortality of aphids was recorded at 1x104 conidia 1-1 after 10 days of application.Keywords
Acremonium zeylanicum, Ceratovacuna lanigera, Sugarcane Woolly Aphid, Efficacy.Full Text
- Management of Sunflower Powdery Mildew Caused by Erysiphe cichoracearum Dc. with Botanicals and Natural Products
Abstract Views :302 |
PDF Views:0
Authors
Affiliations
1 Department of Plant pathology, College of Agriculture, University of Agricultural Sciences, Dharwad (Karnataka), IN
1 Department of Plant pathology, College of Agriculture, University of Agricultural Sciences, Dharwad (Karnataka), IN
Source
International Journal of Plant Protection, Vol 8, No 2 (2015), Pagination: 295-298Abstract
Sunflower is reported to suffer heavy losses because of fungal, viral and bacterial diseases and one of the prominent diseases among them is powdery mildew caused by E. cichoracearum. Recently Powdery mildew is most important limiting factors for production of sunflower in Karnataka. Management of powdery mildew in sunflower was studied in both in vitro and in vivo conditions. Azadirachtin, NSKE, Turmeric (leaf extract), Lantana camara (leaf extract) and Ipomoea carnea (leaf extract) were effective in inhibiting spore germination of pathogen both under in vitro condition at 5 per cent concentration. Similar trend was observed in field condition also with Azadirachtin and NSKE at 5 per cent concentration with least disease incidence of 25.78 and 27.56 per cent disease index, respectively in contrast to 83.33 per cent disease index in control.Keywords
Sunflower Powdery Mildew, Erysiphe circhoracearum Dc., Lantana Camara (Leaf Extract).References
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