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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: Entomology and Apiculture × Author: SHARMA, RITESH × End date: 2010 × Start date: 2010 × Type: Thesis ×
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    ThesisItemOpen Access
    SCREENING OF Apis mellifera L. COLONIES FOR Varroa TOLERANCE AND EVALUATION OF COLONY PERFORMANCE OF SELECTED STOCK
    (2010) SHARMA, RITESH; GUPTA, J.K.
    ABSTRACT The present studies were carried out for screening out Apis mellifera colonies tolerant to Varroa mites from different apiaries and to evaluate the performance of the selected stock and the colonies raised from it. In the present studies, after screening of honey bee colonies from apiary at Nauni, Solan it was found that the colonies C3, C11, C13 and C14 had lower infestation of mites and were Varroa tolerant. These colonies also removed significantly higher percentage (more than 93.33) of pin killed brood than other colonies and also had higher percentage (58.33) of damaged mites. The maximum type of damage which was found in mites was that of damaged legs (24.71%). The data on screening of colonies from other apiaries revealed that the colony M10 was the best performing colony from migratory group, B9 from colonies at Bhota and Colony K18 was best performing colony from Karnal apiary. Amongst all the colonies at different apiaries the colony K18 was found to have no infestation on adult bees and brood and was, therefore, selected as drone mother colony for mating of second generation queens. The colony C3 from the apiary at Nauni, Solan was selected for raising first generation queens because it was found to be more superior than other selected varroa tolerant colonies. The raised colonies were open mated under Nauni conditions and were further evaluated under Nauni and migratory conditions. The results obtained revealed that daughter colonies were superior than general stock colonies both in terms of colony performance and Varroa tolerance. Post capping duration of the daughter colonies was also found to be shorter (269.78 to 272.89 h) than the general stock colonies (275.22 to 277.78h). Based on the performance of the first generation daughter queens, the colony C3D2 was selected for raising second generation queens. The raised queens were subjected to mating with drones of colony K18 in an isolated mating yard and another set of queens, with drones of unknown parentage under open conditions. It was found that second generation queens irrespective of mating conditions, were equally good in maintaining lower mite infestation, however, the colonies mated under isolation were superior with respect to other parameters related to colony performance.