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Dr. Y. S. Parmar University of Horticulture & Forestry, Solan

Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Solan, was established on 1st December, 1985 with the objective to promote education, research and extension education in the fields of Horticulture, Forestry and allied disciplines. Late Dr. Yashwant Singh Parmar, the first Chief Minister and the architect of Himachal Pradesh perceived the importance of Horticulture and Forestry to develop and improve the State economy which led to the establishment of this University. Its history lies in erstwhile Himachal Agricultural College, Solan, established in 1962 and affiliated to the Panjab University. It became one of the campuses of Agriculture Complex of Himachal Pradesh University on its formation in 1970. Consequent upon the establishment of Himachal Pradesh Krishi Vishvavidyalaya in 1978, this campus became its Horticulture Complex and finally in 1985, assumed the status of a State University, being the only University in the country engaged exclusively in teaching, research and extension in Horticulture and Forestry. The University is located at Nauni in Solan District of Himachal Pradesh, 13 km from Solan on Solan-Rajgarh Road, at an elevation of 1300 metres above mean sea level. Solan town is situated on national highway (NH-22) and is well connected by train and bus services. The University has four constituent colleges, out of which, two are located at the main campus Nauni, one for horticulture and the other for forestry, having 9 and 7 departments, respectively. The third College i.e., College of Horticulture & Forestry is located at Neri in Hamirpur District on Nadaun-Hamirpur state highway, about 6 Km from Hamirpur town and is well connected with bus service. The college offers three Undergraduate Degree Programmes i.e. BSc (Hons.) Horticulture, BSc (Hons.) Forestry and B. Tech. Biotechnology and MSc degree programme in a few subjects. The fourth college i.e. College of Horticulture and Forestry, Thunag (Mandi) is located at Thunag District Mandi. This college offer BSc (Hons.) Horticulture and BSc (Hons.) Forestry degree programme. In addition, there are five Regional Research Stations, 12 Satellite Stations and five Krishi Vigyan Kendras (KVKs) situated in different zones of the State.

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20191
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Subject: Forest Products × Author: GUPTA, AMAN × End date: 2019 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    PHYSICO-CHEMICAL AND MECHANICAL PROPERTIES OF THERMALLY MODIFIED WOOD OF Pinus roxburghii SARGENT
    (UHF,NAUNI, 2019-11) GUPTA, AMAN; BHUPENDER, DUTT
    ABSTRACT The present research entitled “Physico-chemical and mechanical properties of thermally modified wood of Pinus roxburghii Sargent” was carried out in the Laboratory and Wood Workshop in the Department of Forest Products, College of Forestry, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2017-18 and 2018-19. Thermal modification of wood samples were carried out at 80, 120, 160 and 200°C. The study revealed significant variation between physico-chemical and mechanical properties of thermally modified wood of Pinus roxburghii. The highest value of specific gravity 0.492 (at 80°C), moisture content (29.14%) and maximum moisture content (190.88%) were recorded in control, whereas the lowest value of specific gravity 0.418 (160°C), moisture content (1.20%) and maximum moisture content (126.77%) were recorded at 200°C. There was no effect of thermal treatment on tracheid length and diameter and medium texture was observed for all temperature treatments. The colour of wood became darker with increase in temperature treatments, seven different colour were observed. The maximum value of shrinkage in longitudinal plane (0.42%), radial plane (4.63%), volumetric shrinkage (9.28%) were recorded at control, and maximum value tangential plane (3.67%), were recorded at 120°C. While the minimum value of shrinkage in longitudinal plane (0.04%), radial plane (2.22%), tangential plane (1.55%), volumetric shrinkage (4.88%) were recorded at 200°C. Among temperature the maximum value of swelling in longitudinal (0.41%), radial (5.22%) and tangential plane (3.15%) were recorded at control, and maximum volumetric swelling (7.71%) was recorded at 120°C, while minimum value of swelling in longitudinal plane (0.08%), radial plane (2.26%) and tangential plane (1.29%) and minimum volumetric swelling (3.15%) were recorded at 200°C. The maximum value of cold water (8.20%), hot water soluble extractives (12.67%), holocellulose content (71.78%) and ash content (1.46%) were recorded at 120°C, whereas the maximum value of alcohol benzene soluble extractives (13.87%), lignin content (33.74%), were observed at 200°C. The minimum value of cold water soluble extractives (5.82%), hot water soluble extractives (9.27%), holocellulose content (65.82%) and ash content (1.03%) were found to be at 200°C, while the lowest value of alcohol benzene soluble extractives 12.17per cent (control) and lignin content (28.03%), were found to be at 80°C. The highest value of tensile strength (0.057 kN/mm2) and compression parallel to the grain (0.050 kN/mm2) were recorded at 120°C, the maximum value of bending strength (0.084 kN/mm2) and compression strength perpendicular to grain (0.027 kN/mm2) were recorded in control, whereas the lowest value of tensile strength 0.043 kN/mm2 (80°C), bending strength 0.007 kN/mm2 (120°C), compression parallel to the grain 0.018 kN/mm2 (80°C) and compression strength perpendicular to the grain 0.012 kN/mm2 (160°C).