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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Synthesis and biological activities of Cinnamo Hydroxamic acid derivatives
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-06) Arya, Sushila; Tandon, Shishir
    The cinnamo hydroxamic acid derivatives have been synthesized employing green chemistry principles. The compounds have been synthesized by the reaction of substituted cinnamic acids and substituted hydroxylamines at temperature 0°C in chloroform as solvent and solution was in the presence of a new catalyst triethylamine . The compounds synthesized are 4-hydroxy cinnamo hydroxamic acid, 3-nitro cinnamo hydroxamic acid, 4-methoxy cinnamo hydroxamic acid, 4-chloro cinnamo hydroxamic acid, o-tolyl-(4-hydroxyl) cinnamon hydroxamic acid, o-tolyl-(3-nitro) cinnamo hydroxamic acid, o-tolyl-(3-bromo) cinnamon hydroxamic acid, o-tolyl-(4-methoxy) cinnamo hydroxamic acid, o-tolyl-(3-chloro) cinnamon hydroxamic acid and 2-Bromo-(4-chloro) cinnamo hydroxamic acid. All the compounds were formed with average to good yield. The compounds were tested for herbicidal activity against Raphanus sativus seeds. The compound 3-nitro cinnamon hydroxamic acid, o-tolyl-(3-bromo) cinnamo hydroxamic acid and 2-Bromo-(4-chloro) cinnamo hydroxamic acid were found to exhibit significant activity at par with the standard pendimethalin at concentration 200ppm. Other compounds exhibited activity significantly lower than the standard at all concentrations. Antioxidant activity of the synthesized compounds was also evaluated for antioxidant activity two methods viz., 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and reducing antioxidant power (FRAP) were employed. Most of the compounds were found to have significant activity. Amongst all the substituted cinnamo hydroxamic acid derivatives 4-hydroxy cinnamo hydroxamic acid exhibited the highest radical scavenging activity followed by 4-chloro cinnamo hydroxamic acid, o-tolyl-(3-bromo) cinnamo hydroxamic acid, 3-nitro cinnamo hydroxamic acid, o-tolyl-(4-methoxy) cinnamo hydroxamic acid, o-tolyl-(4-hydroxyl) cinnamo hydroxamic acid, 4-methoxy cinnamo hydroxamic acid exhibiting activity at par with standard BHT / gallic acid.The compounds o-tolyl-(3-chloro) cinnamo hydroxamic acid, 2-Bromo-(4-chloro) cinnamo hydroxamic acid exhibited lower activity than standard BHT and higher activity than standard gallic acid while compound o-tolyl-(3-nitro) cinnamo hydroxamic acid exhibit lowest radical scavenging activity than both standard BHT and gallic acid. The reducing power activity (FRAP) of synthesized compounds were also studied. The highest reducing power activity was observed for o -tolyl-(4-methoxy) cinnamo hydroxamic acid while, the lowest activity was observed in 4-hydroxy cinnamo hydroxamic acid .The reducing power activities for all the synthesized compounds were compared with standard FeSO4.7H2O. It may be concluded from the present study that cinnamo hydroxamic acid derivatives might be a source of herbicides and antioxidants to protect the agricultural crops, foods etc. Cinnamo hydroxamic acid derivatives show excellent herdicidal and antioxidant activity and may be developed as potential herbicides and antioxidants in future.
  • ThesisItemOpen Access
    Adsorption desorption behaviour of Penoxsulam herbicide in different soils
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-05) Pandey, Vandita; Srivastava, Anjana
    Penoxsulam is a post emergence herbicide, belongs to group triazolopyirimidine sulfonamide, used to control broadleaf and sedges weeds in rice crop. The adsorption desorption behavior of this herbicide was studied under laboratory conditions. Adsorption desorption study of penoxsulam was performed in six soil samples. The adsorption data of penoxsulam at different time intervals was best fitted to pseudo first order kinetics. The value of coefficient of determination (R2) were highly significant and varied from 0.878 to 0.988. The adsorption rate of penoxsulam for different soils followed the order: HLD-2 > BD-2 > HLD-1 > BH-1 > LOH-5 > JK-1. The adsorption data were justified by Freundlich isotherm. The value of coefficient of determination (R2) varied from 0.838 to 0.961. The shape of adsorption isotherm was S type indicating the case of cooperative adsorption which results in the formation of a multimolecular layer on adsorbent. Among the acidic soils LOH-5 having the lowest pH (5.36) showed the highest adsorption whereas, in the case of alkaline soils JK-1 with less alkaline pH and comparatively higher clay and organic content adsorbed more penoxsulam. The computed values of coefficient of determination (R2) for desorption experiment varied from 0.870 to 0.940 which indicated that the desorption data of penoxsulam from soil conformed well to Freundlich Desorption Isotherms model. The values of ln K' varied from 7.960 to 11.492 for acidic soils and from 8.745 to 18.474 for alkaline type of soils. The values of 1/n' ranged from 1.298 to 5.399. In general, the values of 1/n' were relatively lower for acidic soils. The values of desorption index varied from 0.928 to 3.004 indicated that penoxsulam retained by alkali soils could be easily desorbed in soil solution. This showed that higher proportion of adsorbed penoxsulam was liable to desorption with increasing soil pH. The results obtained by FTIR analysis of penoxsulam and penoxsulam treated soils revealed that penoxsulam molecule having several polar moieties in the structure was likely to interact with soils containing clay and humic substances by forming hydrogen bond with water molecules present in the hydration sphere of exchangeable cations and also with different protonated functional groups of soil organic matter which may cause shift of peaks in penoxsulam treated soils.
  • ThesisItemOpen Access
    Phytochemical analysis, pharmacological properties and biopesticidal efficacy of Limnophila indica (L.) Druce
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-05) Randeep Kumar; Ravendra Kumar
    In present study the preliminary qualitative and quantitative phytochemical analysis along with pharmacological activities like in-vitro antioxidant and anti-inflammatory activity and pesticidal activity like insect antifeeding and herbicidal activity of essential oil and different plant extracts of Limnophila indica (L.) Druce were evaluated. The yield of different samples obtained were 0.98%, 8.16%, 1.1% and 3.3% for essential oil, methanol, chloroform and hexane extracts respectively. The presence and absence of various secondary metabolites like alkaloids, saponins, phenols, flavonoids, and diterpenes were observed in all the samples. The GC-MS analysis reveals the identification of 90.9%, 74.3%, 72.9% and 84.3% compounds of the total samples composition of essential oil, methanol, chloroform and hexane extracts respectively. Major compounds like epi-cyclococlorenone (27.7%), _-monolinolein (12.9%), 4,5-dimethyl-1,2,3,6,7,8,8a,8b-octahydrobiphenylene (18.3%) and aristolone (40.3%) were identified in essential oil, methanol, chloroform and hexane extracts respectively. The quantitative evaluation of total phenolics content (TPC), total flavonoid content (TFC) and ortho dihydric phenol (ODP) content of all the extracts were calibrated in terms of gallic acid, catechin and catechol equivalents respectively and resulted the composition in order of chloroform extract > methanol extract > hexane extract. The in-vitro antioxidant activity was performed in terms of DPPH radical scavenging, NO radical scavenging, metal chelating and reducing power effect against standard antioxidants like BHT, ascorbic acid, citric acid and catechin and the results analysed to be very effective with a broad range of inhibition with potent IC50 values. Also, the in-vitro anti-inflammatory activity were tested as a measure of inhibition of protein denaturation method against standard diclofenac sodium and evaluated to be the significantly different range of inhibition as tested at different doses levels. Evaluation of insect antifeeding activity were done with non-preferential leaf dip method against Spilosoma obliqua (Bihar hairy caterpillar) resulted into a significantly diverse range of antifeedant index. Assessment of herbicidal activity in terms of inhibition of percent germination, inhibition of coleoptile length and inhibition of radicle length as tested on the seeds of Raphanus sativus revealed the significant properties in the essential oil and the plant extracts of the tested plant as analyzed against the standard herbicide pendimethalin. All the inhibition data were tested to be significantly different as analyzed via two factor analysis with replication (p<0.01 and p<0.05).
  • ThesisItemOpen Access
    Comparative study on phytochemical, antioxidant, antimicrobial, insecticidal activity of Citrus sinensis and Citrus reticulate
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-05) Sanwal, Yamini; Tandon, Shishir
    Citrus reticulata (kinnow) and Citrus sinensis (orange) were collected from local market of Pantnagar, The essential oil was isolated from the fruit peel by hydrodistillation using Clevenger apparatus. Essential oils were analysed for their chemical composition by GC-MS. Essential oils were tested against Callosobruchus chinensis and Tribolium castaneum for their contact, repellent, fumigant and ovipositional activities. Essential oils were also screened for their antimicrobial activity against two plant pathogenic fungi viz; Fusarium oxysporum and Rhizoctonia solani and Pseudomonas aureginosa bacteria. Antioxidant assay by different methods viz; reducing power activity, chelating activity of Fe2+, free radical scavenging activities were also studied for both the oils. Chemical composition of Citrus reticulata essential oil revealed D-limonene (94.64%), myrcene (1.72%) and n-caprylaldehyde (1.29%) as a major compounds. However, Citrus sinensis essential oil had D-limonene (86.36%) _-terpinyl acetate (4.22%), p-bis (trimethylsilyl) benzene (1.55%) and cis-oleic acid (1.10%) as a major compounds. The bioassay on insecticidal activity (contact, fumigant, repellent, and ovipositional activity) showed both the oils had significant activity against both tested insects. Citrus reticulata had shown better activity than Citrus sinensis against Callosobruchus chinensis and Tribolium castaneum. Both the essential oils exhibited good to moderate antioxidant activity in dose dependent manner. Chelating activity of both the oils was found to be almost similar while, free radical scavenging activity was found to be more in case of Citrus reticulata. Reducing power was greater in case of Citrus reticulata than Citrus sinensis. Both the essential oils were found to be active against Fusarium oxysporum and Rhizoctonia solani and no activity of both oils were observed against Pseudomonas aureginosa at tested concentrations. Based on the above results it can be concluded that, besides its academic importance Citrus sinensis and Citrus reticulata can be good source of natural antioxidant, natural antifungal and natural insecticidal and they can be exploited in future after more clinical and pilot scale trials.