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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
    EVALUATION OF DAMAGE CAUSED BY ROOT KNOT NEMATODE AND ITS SURVIVAL IN TUBEROSE DURING STORAGE OF BULB
    (2023) Arandhara, Babyshree; Gogoi, B. B.
    In the present investigation on evaluation of damage caused by root knot nematode and its survival in tuberose during storage of bulbs, it was observed that all growth parameters of tuberose were affected with corresponding increase in inoculum levels. Plant showed gradual increase in number of galls, egg masses and final nematode population in the soil with increase in population levels of root knot nematode from 20 to 10,000 nematode per pot. Reproductive rate was found to be maximum at lowest inoculum and minimum at highest inoculum of 10,000 M. incognita per kg soil. In the investigation on survival of root knot nematode during storage of bulb, the study of stored planting material (bulbs of tuberose) reveled that all the stages of root knot nematode were present within the bulbs. J2 were found within the bulb and also in between the layers of bulbs. J3, J4 and adult females were found in the bulb tissue. Some adults were also found to be aggregate in between the layers of bulb tissue. There was a reduction in nematode population (56.91%) during the storage period of 6 months. Egg masses within the bulb were brownish in colours, protected by gelatinous matrix and the bulb tissue. The egg masses attached to the basal portion of the bulbs were deep orange colour. The change in colour of egg masses attached to the basal portion of the bulbs during the storage period might be due to drying and tanning of the gelatinous matrix may be due to low moisture for an extended period of time. Germination percentage of the stored bulb was recorded to be 70%. There was 30% reduction in germination of stored bulb due to heavy nematode infestation and drying of bulbs in storage. When infected stored bulbs were replanted in pots with sterilized soil, survival and transmission of nematode to the new crop was confirmed by the developed symptoms (gall and egg mass formation) on roots.