STUDIES ON EFFECT OF Parthenium hysterophorus L. EXTRACT ON WOOD CHARACTERISTICS OF Morus alba L.
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Date
2023-12-11
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UHF Nauni
Abstract
The present investigation entitled “Studies on effect of Parthenium hysterophorus L. extract on wood
characteristics of Morus alba L.” was carried out during the year 2022-2023 in the laboratory and wood
workshop of the Department of Forest Products, College of Forestry, Dr. Y. S. Parmar University of
Horticulture and Forestry, Nauni, Solan (HP). Wood samples of Morus alba L. were prepared and dipped in
different concentrations of 0.25, 0.50, 1.00, 1.50 and 2.00 per cent (w/v) in Parthenium hysterophorus L. extract
(using petroleum ether, methanol and water solvents) solution for 72 hours and were analyzed for variation in
physico-chemical and mechanical properties of Morus alba L. wood. Significant results were obtained from the
variation in physical, chemical, mechanical and effect of paint concentrations on properties of wood treated with
Parthenium hysterophorus L. extract prepared in different solvents. The highest (133.18%) maximum moisture
content was observed in untreated wood samples, while lowest (102.97%) in wood samples treated with petroleum
ether extract at 2 per cent. The maximum (0.594) specific gravity was observed in petroleum ether extract treated
samples at 2 per cent, while minimum (0.504) in untreated wood samples. Maximum volumetric swelling
(10.60%) and shrinkage (8.17%) co-efficient were recorded in untreated wood samples, whereas, minimum
volumetric swelling (6.26%) and shrinkage (4.42%) were observed in samples treated with petroleum ether extract
at 2 per cent. The highest values for cold water-soluble extractives (5.25%), hot water-soluble extractives (7.78%)
and alcohol-benzene soluble extractives (12.35%) were recorded in water extract treated samples at 2 per cent,
while lowest values for cold water-soluble extractives (3.92%), hot water-soluble extractives (4.90%) and alcoholbenzene
soluble extractives (8.93%) were observed in untreated wood samples. The holocellulose and lignin
content ranged from 69.20 to 69.40 per cent and 21.25 to 22.54 per cent, respectively. The highest values for
tensile strength (0.073kN/mm2), bending strength (0.011kN/mm2), compression strength parallel to the grain
(0.058kN/mm2) and compression strength perpendicular to the grain (0.019kN/mm2) were observed in
petroleum ether extract treated wood samples, whereas, the lowest values for tensile strength (0.070kN/mm2),
bending strength (0.008kN/mm2), compression strength parallel to the grain (0.055kN/mm2) and compression
strength perpendicular to the grain (0.014kN/mm2) were recorded in wood samples treated with water extract.
Significant results were obtained for different physical properties of wood treated with different paint
concentrations. The highest (136.51%) maximum moisture content was observed absolute control, while lowest
(21.24%) in wood samples treated with 100 per cent paint concentration. Maximum volumetric swelling (10.65%)
and shrinkage (8.24%) co-efficient were recorded in absolute control, whereas, minimum volumetric swelling
(2.11%) and shrinkage (0.67%) were observed in samples treated with 100 per cent concentrated paint