Author(s):

RK Meena, Bhupender Dutt, Rajneesh Kumar and KR Sharma

Abstract: The present studies were conducted on effect of phyto-chemicals extracts on Pinus roxburghii wood dimensional stability. The data on swelling, shrinkage in different planes, and per cent variation for weight were show significant variation. Among the concentrations, Maximum value for swelling in all planes was found for radial plane (5.16%) for concentration (0.25%) and minimum was found in longitudinal plane for 1.50% concentration (0.28) but non significant. Among the extraction maximum swelling in all planes was recorded in redial planes (5.08) for Parthenium hysterophorus treated wood sample and minimum was found in longitudinal plane (0.28) for P. hysterophorus treated wood sample. Among the solvent used for extraction maximum swelling value (5.05) was recorded for radial plane, the wood samples treated with petroleum ether extract and minimum was observed in the longitudinal planes (0.28) wood samples treated with methanol. Among the concentrations, Maximum value shrinkage in all planes was found for radial plane 4.76 for concentration (0.25%) and minimum was found in longitudinal plane for concentration (0.18). Among the extraction maximum shrinkage in all planes was recorded for tangential planes (4.76) for P. hysterophorus treated wood sample and minimum was found in longitudinal plane (0.20) for Acorus calamus treated wood sample but non-significant. For the solvent used for extraction maximum shrinkage value (4.72) was recorded for radial plane, the wood samples treated with petroleum ether extract and minimum was observed in the longitudinal planes (0.20) wood samples treated with methanol extract but non-significant. Per cent weight variation in swelling (dry basis) and shrinkage (Wet basis) Among the concentrations, maximum weight value find in swelling (114.47) in 2.00%} concentration but non-significant and minimum was noticed in {Shrinkage 1.00% concentration (48.89)}. Among the extraction maximum value observed {Swelling (113.27)} for A. calamus treated wood sample and minimum (Shrinkage) was found in (49.94) for P. hysterophorus treated wood sample. For the solvent used for extraction maximum value {Swelling (115.15)} was noticed for swelling, the wood samples treated with methanol extract used and minimum value noticed for {Shrinkage(49.06)} was found wood samples treated with petroleum ether. The study would help to improve the dimensional satiability structure of wood through natural plant extractive without effect the human being health and environmental.

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