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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: PINGALE AKSHAY KAILAS × End date: 2019 × Start date: 2010 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    PHYSICO-CHEMICAL AND MECHANICAL PROPERTIES OF THERMALLY MODIFIED WOOD OF Bombax ceiba L.
    (UHF,NAUNI, 2019-11) PINGALE AKSHAY KAILAS; BHUPENDER, DUTT
    ABSTRACT The present research entitled “Physico-chemical and mechanical properties of thermally modified wood of Bombax ceiba L.” 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 modifications 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 Bombax ceiba. The maximum value of specific gravity (0.422), moisture content (23.86%) and maximum moisture content (177.45%) were recorded in control, whereas the minimum value of specific gravity (0.368), moisture content (1.01%) and maximum moisture content (133.55%) were recorded at 200°C. There was no effect of thermal treatment on fiber length and vessel diameter and fine texture was observed for all temperature treatments. The colour of wood became darker with increase in temperature treatments, nine different colour were observed. The maximum value of shrinkage in longitudinal plane (0.29%), radial plane (3.04%), tangential plane (3.20%) and the minimum value of shrinkage in longitudinal plane (0.09%), radial plane (1.22%), tangential plane (1.38%), while maximum volumetric shrinkage (6.09%) and minimum volumetric shrinkage (2.04%) were recorded in control. While Among temperatures the maximum value of swelling in longitudinal (0.32%), radial (3.68%), tangential plane (3.37%) and minimum value of swelling in longitudinal plane (0.07%), radial plane (2.27%), tangential plane (1.48%), while maximum value of volumetric swelling (7.71%) and minimum volumetric swelling (3.42%) were recorded at 200°C. The maximum cold water soluble extractives (7.09%), hot water soluble extractives (12.77%), and ash content (2.09%) were recorded at 120°C, whereas the maximum holocellulose content (70.27%) at 160°C and the maximum alcohol benzene soluble extractives (12.86%), lignin content (33.16%), were observed at 200°C. The minimum cold water soluble extractives (4.42%), hot water soluble extractives (7.61%) and holocellulose content (64.79%) were found to be at 200°C, while the minimum alcohol benzene soluble extractives (9.06%) in control and lignin content (27.30%) at 80°C. The highest value of tensile strength (0.044 kN/mm2)and bending strength (0.011 kN/mm2) were recorded in control, and compression strength parallel to grain (0.033 kN/mm2) at 80°C. The lowest value of tensile strength 0.037 kN/mm2 and bending strength 0.007 kN/mm2 were recorded at 200°C, whereas compression parallel to the grain (0.026 kN/mm2) observed minimum at 120°C.