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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: BABITA × End date: 2015 × Start date: 2015 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    STUDIES ON CHILL UNITS REQUIREMENT IN APPLE (Malus × domestica BORKH.)
    (2015) BABITA; CHAUHAN, P.S.
    ABSTRACT The present investigations entitled “Studies on chill units requirement in apple (Malus X Domestica Borkh.)” were conducted in the experimental orchard of the Regional Horticulture Research and Training Station Mashobra, Shimla and in a private apple orchard in Aisha, Tehsil Sunni, Shimla District, during the year 2013 and 2014. The field experiment was laid out in randomized block design and replicated thrice. In experiment-1 the effective chill units (CU) and GDH°C requirements of apple at Mashobra, Shimla located 31.1°N with an elevation of 2286 m were estimated by adopting North Carolina model with base temperature (4.5°C) and (6.1°C). The estimated CU and GDH°C were 1220 and 8244 with base temperature (4.5°C), while using base temperature (6.1°C) estimated CU and GDH°C were 1222 and 5385 respectively. In experiment-2 the estimated CU and GDH°C were tested and compared with models. Using CU and GDH°C constants of all models to calculate full bloom dates of six years i.e. 2008-2014 at three locations of different elevations and compared with actual full bloom dates for different years. The difference of days of proposed models was compared with difference of days of other chill unit models. At Mashobra (2286m amsl) Shimla and Kotkhai (1815m amsl) location North Carolina (Proposed Model with base temperature 4.5°C) recorded minimum difference of two and five days, respectively. However, at Seobag (1330m amsl) Kullu location North Carolina model (base temperature 6.1°C) was found more accurate. In the experiment-3 the chilling requirement of five apple cultivars were estimated under control condition. Among all Red Fuji recorded the maximum (66.4%) and Golden Delicious recorded minimum (41%) bud burst. Red Fuji completed chilling requirement after completing 1100 CU. Cultivar, Scarlet Gala and Red Chief met the chilling requirement in between 1100 CU to 1200 CU, whereas, Starking Delicious and Golden Delicious met their chilling requirement in between 1200 CU and 1300 CU. In the experiment-4 the Starking Delicious apple trees were treated with different treatment combination of Dormex and HMO. The T5 (Dormex @ 1.0% + 2.0% HMO) was found to be the most effective in improving per cent flowering, reducing duration of flowering, increasing fruit set, improving fruit retention and enhancing maturity. However, T6 (Dormex @ 1.5% + 2.0% HMO) was significantly at par in all the parameters. The studies indicate that Dormex @ 1.0% + 2.0% HMO may be helpful improving per cent flowering, reducing duration of flowering, increased fruit set, improved fruit retention and enhanced maturity.