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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: Plant Breeding × Author: DATTA, SURABHI × End date: 2017 × Start date: 2017 × Type: Thesis ×
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    ThesisItemOpen Access
    EFFECTS OF BOTANICALS AND BIOAGENTS ON STORAGE BEHAVIOUR OF BLACK GRAM (Vigna mungo) SEEDS
    (AAU, Jorhat, 2017-07) DATTA, SURABHI; Medhi, T.
    Black gram (Vigna mungo) is the fourth important pulse crop in India, covering an area of about 3.1 million hectares and contributing to 10-12 per cent of national share among the total pulse production. Due to the tropical and humid climate of India, storage of black gram seeds till next sowing season is the most severe problem, with an average damage percentage of nearly 14.97 under storage conditions. Since, pre-storage seed treatment is very important to keep the seed quality good up to next season, in the present investigation, the effect of a few botanicals and bioagents was observed on the storage behaviour of black gram seeds. The seeds were treated with three botanicals viz., Turmeric powder, Neem leaf powder and Black pepper powder and with two bioagent formulations viz., Biogreen and Biotime. Different seed quality parameters like moisture content, germination percentage, seedling vigour index, field emergence and mycoflora association were observed initially and at an interval of two months up to nine months (270 days) of storage. At the end of nine months of storage, lowest moisture content was observed in Turmeric powder treated seeds (8.90 per cent), followed by the untreated control (9.00 per cent), Black pepper treated seeds (9.16 per cent) and Neem leaf treated seeds (9.30 per cent). However, all these treatments were statistically at par. Highest germination (78.67 per cent) and seed vigour index (1517.63) were observed in the seeds treated with Black pepper powder which were at par with those of Neem leaf powder treated seeds and Turmeric powder treated seeds. Highest field emergence after nine months of storage, was observed in seeds treated with Neem leaf powder (75.33 per cent) followed by seeds treated with Turmeric powder (73.51per cent) and Black pepper power (72.41per cent). The seeds treated with bioagents showed low germination as well as low vigour throughout the storage period. Five organisms viz., Aspergillus flavus, A. niger, Rhizopus spp., Fusarium spp. and Penicillium spp. were found to be associated with the seeds under storage. However, in the seeds treated with bioagents Fusarium and Penicillium were absent. The present findings revealed that the seeds treated with botanicals had good effect on seed quality and can be used as an alternative of chemicals in seed treatment.