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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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20211
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Subject: Entomology × Author: Gogoi, Karanika × Start date: 2020 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    EVALUATION OF CERTAIN PLANT PRODUCTS AND CHEMICALS AGAINST BANANA LEAF AND FRUIT SCARRING BEETLE, Nodostoma subcostatum Jacoby (COLEOPTERA: CHRYSOMELIDAE)
    (AAU, Jorhat, 2021) Gogoi, Karanika; Gogoi, Inee
    Field experiments were conducted in the Horticulture Experimental farm, Department of Horticulture, Assam Agricultural University, Jorhat during 2020-21 to evaluate certain plant products and chemicals against banana leaf and fruit scarring beetle, Nodostoma subcostatum Jacoby. The seasonal abundance of leaf and fruit scarring beetle on Dwarf Cavendish (Jahaji) was assessed on weekly basis from May, 2020 to April, 2021. The mean beetle population was highest during August, 2020 and the least was during January, 2021. Several meteorological factors have influenced the fluctuation of the scarring beetle population. For field evaluation, the treatments were applied at three critical stages of growth of the banana plant and among the treatments tested, imidacloprid 17.8 SL @20 g a.i./ha was the best effective treatment in all the three stages of the crop in reducing the beetle population i.e., at 3, 7 and 10 days after treatment, followed by NSKE 1500 ppm @3ml/L and lambda-cyhalothrin 5%EC @0.3ml/L. Among the plant extracts used, Xanthium strumarium @ 10 per cent stood out as the highest in minimizing the beetle population and the infestation over the other two plant extracts viz. Lantana camara and Pongamia glabra @10 per cent respectively. Imidacloprid 17.8 SL efficiently recorded as the best treatment in reducing the number of leaf scars per 5 cm2 leaf surface area whereas Pongamia glabra was the least effective. Reduction in fruit damage was also exhibited best by imidacloprid 17.8 SL (8.23 %) treatment followed by NSKE 1500 ppm (12.44 %), lambda-cyhalothrin 5% EC (16.45 %), Xanthium strumarium (19.28 %), Lantana camara (34.10 %) and Pongamia glabra (36.4 %). The present experiment brought out a conclusion that plants which possess insecticidal properties can be used as an alternative for synthetic insecticides and also in combination with synthetic insecticides, it can further amplify the management strategies in reducing the pest damage.