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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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20171
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Subject: Seed Science and Technology × Author: Gautam, Girija × End date: 2019 × Type: Thesis ×
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    ThesisItemOpen Access
    EFFECT OF DRYING TEMPERATURES ON SEED QUALITY OF GREENGRAM
    (AAU, Jorhat, 2017-07) Gautam, Girija; Borah, Abhijit
    Green gram(Vignaradiata) is one of the most important and most widely cultivated pulse crops in India. The knowledge of seed drying and storage mechanism of green gram crop is essential to minimize the loss and quality standards of the seed. The present study is a preliminary step for identification of storage potential of green gram variety Pratap. A laboratory experiment was carried out to evaluate the effect of drying temperatures on various seed quality parameters and evaluation of these quality parameters over subsequent storage period. The experiment was carried out in the Seed Technology and Research Laboratory of Assam Agricultural University. In the present study four different drying temperatures were used viz. 35°C, 40°C,45°C and 50°C and sun drying was taken as control. After a particular drying period (for each treatment different drying period), when it reaches the desired moisture content (8%, wet basis), the seeds were removed from the hot air oven and stored in HDPE (high density poly ethylene) interwoven bags.. Observations were taken at bimonthly interval and the final observations were taken at the nine months of storage. Based on the results it was found that drying at 50°C decreased the drying time by almost 50% compared to drying at 35°C but it was detrimental to embryo viability and germination. The highest germination, seed vigour index, seed viability and field emergence were found in the samples dried at 35°C which was at par with sun drying. The lowest pest incidence was observed in the samples dried at 50°C, whereas the highest pest incidence percentage was found in samples dried under sun and it was statistically different with all other treatments. However, with the increase in storage duration, the seed quality parameters were found to be decreased except pest infestation which was found to be increased. Although in most of the cases drying temperature 35°C was found at par with sun drying but due to unpredictability and inherent disadvantages along with resultant high pest infestation during storage it cannot be recommended. Thus, from the present study drying temperature of 35°C is recommended for drying and subsequent safe storage of green gram seeds.