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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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20191
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Subject: Seed Science and Technology × Author: PEGU, PRITHVIRAJ × End date: 2019 × Start date: 2015 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    APPLICATION OF BIO PRIMING FOR SEED INVIGOURATION AND EARLY SEEDLING ESTABLISHMENT
    (AAU, Jorhat, 2019-07) PEGU, PRITHVIRAJ; Deka, Sharmila Dutta
    Rice is the world’s most important crop and is a staple food for more than half of the world’s population. Worldwide, rice is grown on 161 million hectares, with an annual production of about 744.4 million tons of paddy (FAO, 2014). Organic agriculture is a rapidly developing trend all around the world and more than 150 countries have adopted this technique and now produce organic food commercially. The most compelling reason for using organic seed when growing organic crops is that seed produced organically causes a less hazardous impact on the environment. Early crop establishment, lower productivity along with non- chemical disease management is a challenging task of seed technologist in organic seed production. Seed priming an effective seed invigoration method has become a common seed treatment to increase the rate and uniformity of emergence and crop establishment in most crops. Bio-priming is a process of a biological seed treatment that refers to the combination of seed priming and inoculation of seed with beneficial organism to protect the seed and improve the quality. In the present investigation, Beauverijal was found to be the best bio-agent for seed treatment as the results indicate better early seedling growth followed by higher no. of seeds/panicle and seed yield and less disease infestation. Early plant development and physiological functions could be impacted by early root growth reduction of disease incidence may also result in better yield performance. Commercial bio-agents viz. Trichojal and Metajal were also found to be effective in lowering the disease incidence and increase in seedling vigour followed by better yield performance. Comparative performance of cold adaptive PGPB (Trichoderma spp. + Bacillus spp.), Microbial consortium (C4) (Bacillus spp. + Pseudomonas spp.), Microbial consortium (C7, Bacillus spp. + Pseudomonas spp.), although designated as cold adaptive strains but does not impart any significant influence in enhancing seed vigour and early seedling growth. The colonization of the microbial agents in the rhizosphere region signifies its role in nutrient absorption and imparting abiotic stress resistance. The better adaptability of local commercial bio-agents in Trichojal, Metajal, and Beauverijal may lead to better performance in seed vigour, early seedling growth and final seed production.