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Ramola, Gaurav Chand
- Relationship between Cerambyciid borer (Insecta: Coleoptera) infestation and human-induced biotic interferences causing mortality of kharsu (Quercus semecarpifolia Smith in Rees) oak trees in Garhwal, Western Himalaya, India
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PDF Views:86
Authors
Affiliations
1 Entomology Branch, Forest Protection Division, Forest Research Institute, Dehradun 248 006, IN
1 Entomology Branch, Forest Protection Division, Forest Research Institute, Dehradun 248 006, IN
Source
Current Science, Vol 122, No 3 (2022), Pagination: 327-332Abstract
Stem and wood boring beetles significantly damage kharsu oak trees leading to their mortality and decline in the Garhwal region of Western Himalaya, India. The relationship established between the prevalent biotic factors (extensive lopping and grazing) and the degree of borer infestation in Chakrata hills, Uttarakhand, revealed a strong correlation between the two. Density–girth class relationship in borer-infested oak stands revealed a higher degree of past disturbance compared to uninfested oak stands, with maximum infestation in girth class 61–80 cm and between 2601 and 2700 msl.Keywords
Biotic interference, oak, stand composition, stem and wood borer, tree density.Full Text
References
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- Efficacy of Bio-Pesticide Beauveria Bassiana Against Kharsu Oak Stem and Wood Borer Xylotrechus basifuliginosus Heller, 1926 (Coleoptera: Cerambycidae) in the Garhwal Region, Western Himalaya, India
Abstract Views :91 |
PDF Views:66
Authors
Affiliations
1 Entomology Branch, Forest Protection Division, Forest Research Institute, Dehradun 248 006, India., IN
1 Entomology Branch, Forest Protection Division, Forest Research Institute, Dehradun 248 006, India., IN
Source
Current Science, Vol 124, No 11 (2023), Pagination: 1339-1342Abstract
Xylotrechus basifuliginosus is a secondary stem borer of stressed, weakened, and dying kharsu oak trees. Recently, it has been found to cause significant infestation in kharsu oak forests in Chakrata Forest Division, Dehradun district, Uttarakhand, India. The susceptibility of eggs and adult stages of X. basifuliginosus was tested against the entomopathogenic fungus, ‘TAG VERIA’ Beauveria bassiana (1 ´ 108 CFU/g minimum) under both laboratory and field conditions. B. bassiana was found to be effective against both stages (adults and eggs) of X. basifuliginosus. It caused 71.34% mortality in adults and 86% inhibition in the eggs after 12 days of exposure under laboratory conditions, and 38.4% mortality in adults under field conditions in the Deoban Reserve Forest, Chakrata Forest Division, suggesting it to be a promising bio-pesticide against this wood borer.Keywords
Beauveria bassiana, Biocontrol, Oak Trees, Mortality, Xylotrechus basifuliginosus.Full Text
References
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- Ramola, G. C. and Singh, A. P., Biology of Xylotrechus basifuligi-nosus Heller – a borer of Kharsu oak trees in the Western Hima-laya. Indian J. Entomol., 2022; doi:10.55446/IJE.2022.520.
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