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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: ARJUN, SINGH × End date: 2012 × Start date: 2012 ×
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    ThesisItemOpen Access
    STUDIES ON SENSITIVITY AND MONITORING FOR RESISTANCE TO FUNGICIDES IN MARSSONINA CORONARIA CAUSING PREMATURE LEAF FALL OF APPLE
    (2012) ARJUN, SINGH; SHARMA, J.N.
    ABSTRACT The present investigation entitled “Studies on sensitivity and monitoring for resistance to fungicides in Marssonina coronaria causing premature leaf fall of apple” was undertaken to study the baseline sensitivity and sensitivity of different isolates of Marssonina coronaria causing premature leaf fall of apple in Shimla district of Himachal Pradesh against systemic and non-systemic fungicides, in terms of their EC50, Minimum Inhibitory Concentration (MIC) and Resistance Factor (RF). Baseline sensitivity of wild isolate of Marssonina coronaria after 24 hours of incubation it ranged from 0.704μg/ml in copper oxychloride to 0.966 μg/ml in Propineb. Similarly, after 48 hours of incubation it ranged from 0.712 μg/ml in carbendazim to 0.980 μg/ml in mancozeb. Minimum Inhibitory Concentration of wild isolate ranged from 80 to 160 ppm in non-systemic and 80 ppm in systemic fungicides, which showed different levels of sensitivity to different fungicides. Ten different fungicides, viz. mancozeb, zineb, propineb, captan, dodine, metiram, chlorothalonil, copper oxychloride, carbendazim and thiophanate methyl were evaluated at different concentrations (5 to 160 ppm) for their sensitivity against five different isolates collected from Shimla district of Himachal Pradesh. All fungicides tested against different isolates were moderate to highly sensitive in respect of premature leaf fall of apple. Resistance Factor shown by fungicides increased 1 to 2 times from the baseline value, however, it did not reveal development of resistance against commonly used fungicides, which means that the isolates were still sensitive to these fungicides. On the basis of sensitivity and MIC shown by different fungicides, it concluded that dodine followed by carbendazim, metiram, chlorothalonil, propineb, mancozeb, thiophanate methyl and zineb were highly effective in controlling Marssonina coronaria causing premature leaf fall of apple while, copper oxychloride and captan were less effective against different isolates collected from Shimla district of Himachal Pradesh.