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Assam Agricultural University, Jorhat

Assam Agricultural University is the first institution of its kind in the whole of North-Eastern Region of India. The main goal of this institution is to produce globally competitive human resources in farm sectorand to carry out research in both conventional and frontier areas for production optimization as well as to disseminate the generated technologies as public good for benefitting the food growers/produces and traders involved in the sector while emphasizing on sustainability, equity and overall food security at household level. Genesis of AAU - The embryo of the agricultural research in the state of Assam was formed as early as 1897 with the establishment of the Upper Shillong Experimental Farm (now in Meghalaya) just after about a decade of creation of the agricultural department in 1882. However, the seeds of agricultural research in today’s Assam were sown in the dawn of the twentieth century with the establishment of two Rice Experimental Stations, one at Karimganj in Barak valley in 1913 and the other at Titabor in Brahmaputra valley in 1923. Subsequent to these research stations, a number of research stations were established to conduct research on important crops, more specifically, jute, pulses, oilseeds etc. The Assam Agricultural University was established on April 1, 1969 under The Assam Agricultural University Act, 1968’ with the mandate of imparting farm education, conduct research in agriculture and allied sciences and to effectively disseminate technologies so generated. Before establishment of the University, there were altogether 17 research schemes/projects in the state under the Department of Agriculture. By July 1973, all the research projects and 10 experimental farms were transferred by the Government of Assam to the AAU which already inherited the College of Agriculture and its farm at Barbheta, Jorhat and College of Veterinary Sciences at Khanapara, Guwahati. Subsequently, College of Community Science at Jorhat (1969), College of Fisheries at Raha (1988), Biswanath College of Agriculture at Biswanath Chariali (1988) and Lakhimpur College of Veterinary Science at Joyhing, North Lakhimpur (1988) were established. Presently, the University has three more colleges under its jurisdiction, viz., Sarat Chandra Singha College of Agriculture, Chapar, College of Horticulture, Nalbari & College of Sericulture, Titabar. Similarly, few more regional research stations at Shillongani, Diphu, Gossaigaon, Lakhimpur; and commodity research stations at Kahikuchi, Buralikson, Tinsukia, Kharua, Burnihat and Mandira were added to generate location and crop specific agricultural production packages.

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  • ThesisItemOpen Access
    SHELF LIFE ENHANCEMENT OF KEW PINEAPPLE AND KHASI MANDARIN USING BIOTIC POLYMER, MICROBIAL ANTAGONIST AND UV RADIATION
    (2014) Mili, Jyoti Prashad; Borthakur, P. K.
    Studies were carried out at Department of Horticulture, Assam Agricultural University during the period 2012-2014 with an objective to study the effect of biotic polymer, microbial antagonist and UV radiation on shelf-life of Khasi mandarin and Kew pineapple fruits and to study the economics of using the treatments. The study revealed that decay of fruits was mainly caused by Penicillium digitatum, P. niger, P. chryogenum and Aspergillus niger on Khasi mandarin and Penicillium sp., Aspergillus niger, Fusarium subglutinas, Nigrospora sp. on Kew pineapple. The decay percentage, PLW, pH, TSS, acidity and peroxidase enzyme activity of Khasi mandarin and Kew pineapple fruits increased with increase in the period of storage while texture value, fruit weight, moisture content, ascorbic acid and chlorophyll content decreased during storage period. Amongst all the UV treatments; UV radiation and chitosan combined treatment (T9) was found most effective in retention of shelf life. UV radiation and Pseudomonus combined treatment (T12) and Bacillus and Pseudomonus combined treatment (T8) had best result in most of the microbial antagonist treatments on Khasi mandarin and Kew pineapple fruits, respectively. Chitosan treatment had produced the best result among all the treatments and helped in retention of fruit texture and colour, had lower decay percentage, lower enzymatic activity and retained overall better fruit quality in both Khasi mandarin and Kew pineapple fruits during storage. This might be due to the properties of chitosan which not only has antimicrobial properties but also has the ability to form coating on fruit and vegetable surface, reducing the respiration rate by adjusting the permeability of carbon dioxide and oxygen. The UV radiation treatment showed less impressive results as compared to chitosan treatment. This was due to the free radicals generated from UV radiation might target cell membranes, nucleic acids, cell walls and enzymes, inducing the acceleration of senescence. The chitosan treatment was found to be the best in enhancing shelf life in both Khasi mandarin and Kew pineapple fruits during storage.