~ 574 ~  Journal of Entomology and Zoology Studies 2017; 5(5): 574-580 E-ISSN: 2320-7078 P-ISSN: 2349-6800 JEZS 2017; 5(5): 574-580 © 2017 JEZS Received: 07-07-2017 Accepted: 08-08-2017 RK Meena Department of Forest Products, College of Forestry, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solanm, Himachal Pradesh, India Bhupender Dutt Department of Forest Products, College of Forestry, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solanm, Himachal Pradesh, India KR Sharma Department of Forest Products, College of Forestry, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solanm, Himachal Pradesh, India JN Sharma Dean, College of Horticulture, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solanm, Himachal Pradesh, India Rajneesh Kumar Department of Forest Products, College of Forestry, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solanm, Himachal Pradesh, India Correspondence RK Meena Department of Forest Products, College of Forestry, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solanm, Himachal Pradesh, India Effect of plant extracts on Trametes versicolor (White rot) fungal colonization and inhibition of treated wood samples of Pinus roxburghii Sargent RK Meena, Bhupender Dutt, KR Sharma, JN Sharma and Rajneesh Kumar Abstract The present studies were conducted on effect of plant extracts on Trametes versicolor (White rot) fungal colonization and inhibition of treated and untreated wood of Pinus roxburghii Sargent. The data on colonization and fungal inhibition were noticed significant variation. Among the concentrations, maximum value for fungal colonization treated wood samples with extract was noticed in the (100%) for the controlled wood samples and minimum was found in 2.00% concentration (12.86%).The maximum colonization was observed in the Acorus calamus extract treated wood samples (59.04) and minimum in Parthenium hysterophorus treated extracts wood samples. In case of solvent used for the extraction, maximum fungal colonization was recorded in petroleum ether extract (58.69%) treated wood samples and minimum (53.38%) in methanol extract treated samples. In case of plant extract and chromium treated wood samples. The data for concentrations, maximum value (76.47%) was found in controlled wood samples and minimum in (10.31%) 2.00% concentration. The maximum value (49.31%) for the extract was noticed in A. Calamus treated wood samples and minimum value (46.84%) in P. hysterophorus treated wood samples. Among the solvent used for extraction maximum value (48.84%) showed in petroleum ether extract treated samples and minimum (47.31%) in methanol extract treated samples. Among the concentrations, maximum value (87.19%) for inhibition treated wood samples with extract was found in the 2.00% concentration treated wood samples and minimum 0.25% concentration. The maximum inhibition was noticed in the P. hysterophorus extract treated wood samples (56.37%) and minimum (49.27%) in the A. calamus extracts treated wood samples. In case of solvent used for the extraction, maximum inhibition was noticed in methanol extract (56.06%) treated wood samples and minimum (49.57%) in petroleum ether extract treated samples. In case of plant extract and chromium treated wood samples. The data for concentration, maximum value (90.41%) was observed in 2.00% concentration and minimum in (10.44%) 0.25% concentration. The maximum value (49.44%) for the extract was noticed in P. hysterophorus treated wood samples and minimum value (43.75%) in A. Calamus treated wood samples. Among the solvent used for extraction maximum value (49.81%) showed in petroleum ether extract treated samples and minimum (43.37) in methanol extract treated samples. Keywords: Plant extracts, Trametes versicolor, wood, wood durability, Solvents Introduction Wood is one of the most vital natural resource on earth, and plays an important role in the world economy. Presently, the demand for quality timber and wood based products is very high and is increasing with time. To meet this increasing demand, efficient use of timber species is of key importance, there is heavy pressure on primary timber species like; teak, sheesham, sal, deodar etc. and their cost is also high. In this context utilization of secondary species play a very important role. The main drawback with these secondary lesser known timber species are their durability during use for different applications. These species are more biodegradable. Therefore, protection of wood and wood products is required during manufacturing, storage, transportation and also in service [1] . Biological degradation may be due to various causes like bacteria, mold and stain, decay fungi, insects, and marine borers. Mold and stain fungus make the wood more absorptive, which makes the wood more susceptible to moisture and decay fungi. These conventional wood preservatives, although found to be very effective against wood destroying organisms but are said to cause environmental pollution and a few of them are hazardous to animals and human beings etc [2] . Certain wood preservatives have been banned or limited for some applications such as chromated