Thumbnail Image

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.

Browse

20141
Reset filters
Subject: Mycology and Plant Pathology × Author: Negi, Hoshiyar Singh × End date: 2019 × Start date: 2010 × Thesis Type: Ph.D ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on diversity analysis of collar rot pathogen (Phytophthora cactorum) of apple and its management
    (YSPU, 2014) Negi, Hoshiyar Singh; Sharma, I.M.
    The present investigations entitled “Studies on diversity analysis of collar rot pathogen (Phytophthora cactorum) of apple and its management” was conducted in the laboratories and experimental farm of the Department of Plant Pathology during year 2011-2013. During the survey of the disease, highest average disease incidence was recorded in district Mandi (9.31%) while, it was minimum (3.86%) in district Kinnaur. In the standardization of isolation technique experiment, baiting with sunhemp seeds in pond water for 96 h yielded growth of P. cactorum in all five plates. Variability was recorded in sporangial shape and size of the isolates as shape varied from ovoid, globose to ellipsoid with isolate PC 13 showing ellipsoid shape, isolate PC 3, PC 16 and PC 26 showing globose shape while, sporangium of all other isolates were ovoid shaped. Mycelial growth pattern in the culture were also variable with chrysanthemum like or radiate to slightly radiate growth pattern. Colonies of PC 6 and PC 20 were slightly submerged and it was submerged in isolate PC 11 and PC 22 while, colonies of rest of the isolates were with dense aerial or sparse aerial mycelium. Similarly, variability was also noticed in pathogenicity the different isolates. Polymorphic fragments generated by PCR using four primers were 12/12 with OPA 1, 11/11 with OPA 2, 7/7 with OPA 13 and 12/12 with OPA 16 showing 100 per cent polymorphism and the genetic polymorphism ranged from 17 to 70 per cent. Among ten pollinizer cultivars of apple evaluated for source of resistance, Stark Spur Golden showed maximum tolerance as minimum seedling mortality of 15.11 per cent. Among non-systemic fungicides tested in vitro, mancozeb was highly efficacious and gave 97.62 per cent mycelial inhibition of test pathogen followed by metiram (91.39%). Among the six combi-fungicides, cymoxanil + mancozeb (Curzate M) and metalaxyl + mancozeb (Matco) were most effective 97.87 per cent mycelial inhibition. Under pot conditions, metalaxyl + mancozeb and cymoxanil + mancozeb were best and statistically at par with each other. Water extract of mustard cake and Eucalyptus leaves were the most effective and significantly superior treatments among botanicals under in vitro and in vivo conditions. Trichoderma harzianum 1 resulted in maximum growth inhibition (52.96%) and minimum disease incidence of 20.0 per cent. Three most effective antagonists were found compatible with all three fungicides and botanicals. Under integrated management studies, maximum disease control of 99.16 and 99.15 per cent in disease incidence and severity, respectively was achieved with treatments C1E2B1 (Curzate M + Mustard cake +T. harzianum) and C2E2B1 (Matco + Mustard cake + T. harzianum). Maximum increase in shoot length (48.6 cm) was also recorded in the treatment combination C2E2B1 (Matco + Mustard cake + T. harzianum).