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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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Subject: Plant Pathology × Author: BHARDWAJ, SWADHA × End date: 2019 × Start date: 2019 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    BIO- INTENSIVE MANAGEMENT OF DAMPING – OFF OF TOMATO (Solanum lycopersicum L.)
    (UHF,NAUNI, 2019-10) BHARDWAJ, SWADHA; GUPTA, MEENU
    ABSTRACT In the present investigations on damping-off of tomato, characteristic symptoms of the disease first appeared in two phases i.e. pre- emergence and post- emergence. In the first phase, infected seeds failed to germinate while in second phase, small water soaked lesions on the stem appeared at soil line leading to toppling over of the seedling on ground level. Four fungal pathogens namely P. ultimum, F. oxysporum, R. solani and S. rolfsii were isolated from infected seedlings. Identification of the isolated pathogens was done on the basis of various morphological and cultural characteristics. Morphological studies revealed that pathogens were fast growing on artificial medium with initially white cottony and profusely growing mycelium attaining a colony diameter of 90 mm within 3-6 days days. In case of P. ultimum, hyphae were hyaline and coenocytic, produced sporangia and oospore. In F. oxysporum, the mycelium was hyaline and had branches and produced macroconidia, microconidia and chlamydospores. In R. solani, the mycelium was septate, colour of the hyphae was brown. The branching occurred almost at right angles to the hyphal cell and produced sclerotia. In S. rolfsii, the hyphae was hyaline, thin walled, sparsely septate when young. Sclerotia were dark brown but variation from lighter brown to darker colour was found. Pathogenicity test revealed that disease incidence was more 94.44 per cent in pre-emergence phase while it was 50.00 per cent in post-emergence phase. During in vitro thermal sensitivity of inocula of fungal pathogens of damping-off of tomato maximum mycelial growth inhibition was recorded in P. ultimum (5.56%) followed by F. oxysporum (4.95%) and R. solani (3.73%). Soil solarization increased the mean soil temperature by 3.49 ºC at 5 cm depth as compared to nonsolarized control at the same depth. Soil solarization for 30 days resulted in killing of the pathogens F. oxysporum and R. solani while all the pathogen were not viable after 40 days of soil solarization. Among different antagonists evaluated, T. harzianum caused maximum mycelial inhibition under in vitro conditions and was also found effective under the pot conditions. There was significant reduction in the disease incidence with Lantana camara (37.50%) followed by Vitex nigundu (39.16%) in the pot conditions. Among SAR chemicals potassium chloride and potassium dihydrogen phosphate when applied at 300 and 200 mM concentration were found effective and resulted in (16.66%) and (20.24%) disease incidence, respectively. The minimum disease incidence of damping-off was recorded in the field conditions with the combination of all the treatments (soil solarization + soil application of T. harzianum + soil application of Lantana camara + seedling treatment of potassium chloride) resulted in 13.11 per cent disease incidence and 74.88 per cent disease control. Signature of the Student Signature of Major Advisor Name: Swadha Bhardwaj N