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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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Author: CHANDEL, AKSHU × Start date: 1992 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    STUDIES ON WOOD CHARACTERISTICS USING Nerium oleander L. EXTRACT AS A WOOD BIOPRESERVATIVE
    (UHF,NAUNI, 2016) CHANDEL, AKSHU; DUTT, BHUPENDER
    ABSTRACT The present research entitled “Studies on wood characteristics using Nerium oleander L. extract as a wood biopreservative” was carried out during 2014-2015 & 2015-2016 in the Department of Forest Products and in the Department of Plant Pathology, Dr. Y.S. Parmar University of Horticulture and Forestry (Nauni) Solan (HP). Wood samples of Pinus roxburghii Sargent, Celtis australis L. and Bombax ceiba L. of the sizes 5 cm x 2.5 cm x 2.5 cm + .25 cm x .15 cm x .15 cm (longitudinally x radially x tangentially) were prepared. These wood specimens were dipped in Nerium oleander L. leaf extract solution for 72 hours in different concentrations of 0.25, 0.5, 1, 1.5 and 2 per cent (w/v). These were analyzed for variation of specific gravity, per cent weight gain of treated and untreated wood on dry weight basis (swelling), per cent weight gain of treated and untreated wood on wet weight basis (shrinkage), per cent oven dry weight gain before and after treatment, volumetric swelling coefficient, volumetric shrinkage coefficient, swelling and shrinkage of wood in three different planes, Chromium absorption (%), Chromium leaching (%), Chromium retention (%), per cent fungus growth and per cent fungal inhibition. The maximum value (0.569) for specific gravity was recorded in Celtis australis L. and minimum (0.428) in Bombax ceiba L. showing significant difference. Swelling and shrinkage of wood were recorded maximum in Pinus roxburghii Sargent in longitudinal plane, radial and tangential plane. The minimum swelling was recorded in Bombax ceiba L. in longitudinal, radial and tangential plane, while minimum shrinkage was observed for Bombax ceiba L. in longitudinal plane and Celtis australis L. in radial and tangential plane. Maximum volumetric swelling (12.21%) and shrinkage (8.45%) coefficient was recorded in Pinus roxburghii Sargent and minimum volumetric swelling coefficient (8.87%) in Bombax ceiba L. while minimum volumetric shrinkage coefficient (6.98%) in Celtis australis L. The maximum per cent variation of treated and untreated wood on dry and wet weight basis were recorded in Bombax ceiba L. and minimum in Celtis australis L. Maximum value for Chromium absorption (%), leaching (%) and retention (%) were found at 10% chromic acid concentration and minimum at 5% concentration. The maximum fungus colonization (100%) was recorded in control for all the species. The minimum fungus colonization 16.66% was recorded in Pinus roxburghii Sargent at 2.00% concentration and highest fungus growth inhibition 83.34 % was recorded at the same concentration for Pinus roxburghii Sargent