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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 × Author: BRAR, GAGANPREET SINGH × Start date: 2012 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    PERSISTENCE AND DISSIPATION PATTERN OF SOME ORGANOPHOSPHORUS INSECTICIDES ON CAULIFLOWER AND BRINJAL: A GAP SUPERVISED FIELD STUDY
    (UHF,NAUNI, 2018-06-05) BRAR, GAGANPREET SINGH; PATIYAL, S.K.
    ABSTRACT The present investigation entitled “Persistence and dissipation pattern of some organophosphorus insecticides on cauliflower and brinjal: A GAP supervised field study” was carried out in the Department of Entomology, Dr. Y S Parmar University of Horticulture and Forestry, Nauni, Solan (HP). The QuEChERS method was validated for intended use in the laboratory. Insecticides were applied at single dose and double dose on cauliflower and brinjal crop. On cauliflower, acephate was applied @ 560 and 1120 g a.i. ha-1, ethion @ 500 and 1000 g a.i. ha-1, quinalphos @ 250 and 500 g a.i. ha-1 and triazophos @ 500 and 1000 g a.i. ha-1. On brinjal, chlorpyrifos was applied @ 300 and 600 g a.i. ha-1 and ethion @ 500 and 1000 g a.i. ha-1. The persistence study on cauliflower curds revealed initial deposits 1.436, 1.064, 0.808 and 2.017 mg kg-1 of acephate, ethion, quinalphos and triazophos, respectively at single dose. At double dose the initial deposits of acephate, ethion, quinalphos and triazophos were 2.523, 1.823, 1.371 and 3.813 mg kg-1, respectively. Acephate and triazophos persisted in cauliflower curds upto 7 and 10 days at single and double dose, respectively. Whereas, ethion and quinalphos persisted for 5 days at single dose and 7 days at double dose. Chlorpyrifos initial deposits on brinjal fruits were 1.096 mg kg-1 and 1.982 mg kg-1 at single and double dose, respectively, which persisted for 7 and 10 days. Ethion the initial residues on brinjal fruits were 0.861 and 1.637 mg kg-1 when sprayed at single and double dose which persisted up to 5 and 7 days, respectively. The safe waiting periods for the harvesting of the cauliflower curds were suggested as 9.90, 1.36, 6.44 and 11.43 days for acephate, ethion, quinalphos and triazophos, respectively. Safe waiting periods 7.13 and 1.33 days suggested for chlorpryifos and ethion on brinjal, respectively. Acephate persisted for 1 day whereas ethion, quinalphos and triazophos persisted for 3 days in cauliflower field soil. Residues of chlorpyrifos and ethion were persisted for 3 days in brinjal field soil. Among various decontamination processes microwave and open pan cooking were found more effective in removing pesticide residues in cauliflower curds and brinjal fruits. Survey studies revealed that most of the farmers were not aware about the recommendation of the pesticides on cauliflower and brinjal and take advice from pesticide dealers or company representatives.