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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
    EFFECT OF PRE-SOWING SEED TREATMENTS AND SOWING DATES ON YIELD AND QUALITY OF GREENGRAM SEEDS IN SUMMER AND KHARIF SEASON
    (AAU, Jorhat, 2017-07) Devi, Krishna; Barua, Purna K.
    Greengram (Vigna radiata (L.) Wilczek) is an important pulse crop of India. A study was conducted in 2016 in the laboratory and experimental farm of the Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat to evaluate the effect of pre-sowing seed treatments and sowing dates on yield and quality of greengram seeds in summer and kharif season. Ten different seed treatments namely water soaking for overnight, MnSO4 100 ppm, neem extract 1%, GA3 @ 5 ppm, KCl 1%, linseed oil @ 10 ml per kg of seed, rhizobium, neem+rhizobium, linseed oil+ rhizobium, trichoderma, were used along with a control. In laboratory experiment before sowing highest germination percent, lowest hard seed, highest seedling length, highest vigour index and highest seedling dry weight were observed in gibberellic acid treated seed, while neem treated seed showed lowest dead seed and KCl treated seed showed lowest fresh ungerminated seed. In laboratory experiment summer season was better than kharif for all the seed traits except for fresh ungerminated seed which was not affected by season. In field experiment gibberellic acid treated seed outperformed then other treatments showing highest seedling emergence and highest shoot and root length at 20 DAS, lowest days to 50% flowering and maturity, highest raw and graded seed yield, highest pure live seed, highest hundred seed weight. Untreated control performed very poorly followed by linseed oil coated seed. Most of the characters studied were found to be unaffected by season except for raw and graded seed yield as well as hundred seed weight for which summer crop performed better than kharif. In laboratory experiment after harvest highest germination percentage, seedling length, seed vigour index, seedling dry weight and lowest hard seed and fresh ungerminated seed was found in gibberellic acid treated seed. Summer season was better than kharif for seed yield and quality. Pre-sowing seed treatment considerably enhanced seed yield and quality where priming with 5 ppm gibberellic acid outperformed all other treatments.