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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
    Efficacy of nano bioformulation for the management of red spider mite (Oligonychus coffeae) in tea
    (2021) Sonowal, Supriya; Sahewalla, I. P.
    The present investigation was conducted in the Department of Tea Husbandry and Technology, Nano Lab of Department of Plant Pathology and field experiment were conducted in Experimental Garden for Plantation Crops (EGPC), Assam Agricultural University (AAU), Jorhat, Assam during 2016-2020 to carry out the experiments to obtain nanoparticle and characterization. The nano particles were synthesized from Fusarium oxysporum, fish and crab and used as NP-1, NP-2 and NP-3 respectively. The nanoparticle used were characterized by UV-VIS, Zeta Sizer, TEM and DLS. UV-VIS spectroscopy of chitosan nanoparticles was carried out a range of wavelength of 314.00, 340.00, 348.50 nm 200- 600 nm and results showed maximum absorption at critical wavelengths for a particular nanoparticle respectively for F. oxysporum, fish and crab chitosan nanoparticles. Zeta potential values of the present nanoparticles were recorded positively charged with zeta potential of 3.85, 16.89 and 20.48 respectively for chitosan nanoparticles of F. oxysporum, fish and crab. Similarly, TEM study showed the present nanoparticles were smooth surfaced with spherical in shape. On the other hand DLS study showed the size of the nanoparticles as 105.6, 98.0, 285.0 nm respectively for F. oxysporum, fish, crab. In vitro evaluation of chitosan NPs synthesized from F. oxysporum, fish and crab in combination of M. anisopliae and V. lecanii against red spider mite was tested at different doses (5 ml/lit, 7 ml/lit and 10 ml/lit) at 100 ppm concentration. At first day after treatment highest per cent mortality recorded from M. anisopliae + NP-2 (38.55%) at dose of 7 ml/lit. At third days of spray the highest per cent mortality was recorded from M. anisopliae + NP-2 (65.42%) at 7 ml/lit .This was followed by M. anisopliae + NP-2 (58.79%) and (58.05%) at 10 ml/lit and 5 ml/lit respectively. At fifth days after treatment M. anisopliae + NP-2 showed maximum mortality against O. coffeae (81.66%) at 7ml/lit followed by M. anisolipae + NP-2 (79.76%) and (76.48%) at dose of 10 ml/ lit and 5 ml/lit respectively and lowest mortality per cent (21.51%) was observed at control.