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Pant, Himani
- Potential of Lantana camara Linn. Weed against Wood Destroying Fungi
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Fungi, Trametes versicolor, Oligoporus placentus
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Indian Forester, Vol 135, No 3 (2009), Pagination: 403-411Abstract
Lantana camara Linn. belonging to family Verbenaceae is known world wide as an obnoxious weed having 650 varieties and spreading over 60 countries. The present study was carried out to investigate the efficacy of L. camara extracts against wood destroying white and brown rot fungi. Root, stem and leaves of Lantana were collectively extracted with ethanol followed by hot water. Ethanolic extract at a concentration levels of 0.005, 0.01, 0.05, 0.1, 0.15, 0.2, 0.5, 1.0, 1.5 and 2.0% and the hot water extract at a concentration levels of 0.5, 1.0, 2.0 and 3% were tested against Trametes versicolor, a white rot and Oligoporus placentus, a brown rot by malt-agar bioassay. Results revealed that the ethanolic extract upto 0.01% concentration level recorded 0% growth of T. versicolor and O. placentus as compared to 100% observed in control plates. A growth of 50 and 28% of O. placentus and T. versicolor was observed at 0.005% concentration of the ethanolic extract. Hot water extract on the other hand at all the concentrations tested recorded 97 to 100% surface coverage of the test fungi. Qualitative analysis of the ethanolic and hot water extracts revealed presence of high amounts of phenolics and alkaloids and appreciable amount of terpenoids in the ethanolic extract. Presence of high amounts of carbohydrates and trace amounts of alkaloids and phenols were observed in hot water extract.Keywords
Lantana camara, Root, Stem, Leaves, Ethanol, Hot Water Extracts, Wood DestroyingFungi, Trametes versicolor, Oligoporus placentus
- Wood Protection by Pongamia pinnata Seed Oil Through Heating Process
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Indian Forester, Vol 138, No 2 (2012), Pagination: 136-141Abstract
Pongamia pinnata (L) Pierre is thought to be a native of India and is found throughout Asia. Pongamia oil is considered to possess anti-fungal and insecticidal activity but this property is not fully tapped and is under utilized. The present study was carried out to evaluate the potential of pongamia oil against wood decaying fungi. The oil was tested at different concentrations against Oligoporus placentus and Trametes versicolor by Potato dextrose agar bioassay. Results revealed that oil at concentration levels of 15 and 10% recorded considerable growth inhibition of both the test fungi. However, at lower concentrations the oil was found ineffective. The oil was further evaluated for its efficacy against the test fungi by soil block bioassay method. Poplar and chir pine sapwood specimens treated with pongamia oil at 180 and 200 °C, recorded considerable reduction in weight loss as compared to control against test fungi. Heating resulted in colour change of oil as well as that of wood. Preliminary study shows that Pongamia pinnata oil can be explored for wood protection.Keywords
Anti-fungal Activity, Insecticidal Activity, Pongamia pinnata, Seed Oil, Potato Dextrose Agar Bioassay, Soil Block Bioassay- Efficacy of Chloropicrin Against Wood Decaying Fungi In-vitro
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Indian Forester, Vol 137, No 2 (2011), Pagination: 249-254Abstract
To determine the fungicidal effectiveness of chloropicrin against wood decaying fungi white rot (Trametes versicolor) and brown rot (Oligoporus placenthus), Cpi was tested by malt agar bioassay. Cpi at 0.001% was unable to show activity against the test fungi showing complete growth in Petri plates as in control. It showed fungicidal effectiveness against both the test fungi i.e. T. versicolor and O. placentus at 0.01% concentration.Keywords
Fumigant, Brown Rot, White Rot- Effect of Heat Treatment on Decay Resistance of Pinus Roxburghii Wood against Decaying Fungi
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Affiliations
1 Wood Preservation Discipline, Wood Processing Division Forest Research Institute, Dehradun, IN
1 Wood Preservation Discipline, Wood Processing Division Forest Research Institute, Dehradun, IN
Source
Indian Forester, Vol 140, No 1 (2014), Pagination: 65-69Abstract
The aim of the present study was to determine the effect of heat treatment on fungal resistance of chir pine (Pinus o roxburghii) wood. Heat treatment of wood was done at three different temperatures (160, 180 and 210 C) for 0.5, 3, 5, and 24 h in vacuum oven under N atmosphere. Fungal resistance was determined by exposing the heat treated 2 specimens to wood decaying fungi, Oligoporus placentus (brown rot) and Trametes versicolor (white rot) through soil block bioassay test in the laboratory. Heat treatment showedremarkable protection to chir pine wood against both the test fungi. It was also observed that heat treatment showed the greater resistance against white-rot as compared to brown rot.Keywords
Heat Treatment, Pinus Roxburghii, Oligoporus Placentus, Trametes Versicolor.References
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