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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
    BIOENGINEERING MICROBIAL ANTAGONISTS WITH JATROPHA (Jatropha curcas) OIL AND RESULTANT SUPPRESSION OF BACTERIAL WILT (Ralstonia solanacearum) OF TOMATO
    (AAU, Jorhat, 2018) BARUAH, KOLLOL PRATIM; Bora, L. C.
    Tomato (Solanum lycopersicum L.) is one of the most important “protective foods” both because of its special nutritive value and widespread production. Bacterial wilt of tomato caused by Ralstonia solanacearum is one of the major disease causing a loss up to an extent of 100 per cent. The use of bio-control agents against vegetable diseases are reported to be quite effective and inexpensive. The efficiency of bio-control agents could be enhanced to a great extent when integrated with a known amount of phyto-extract. The efficacy of Jatropha oil (Jatropha curcas) was evaluated in the present study for suppression of the bacterial wilt pathogen, R. solanacearum The in-vitro studies revealed that Jatropha oil @ 5000 ppm, 10000 ppm & 50000 ppm could suppress the pathogen up to an extent of 25.3, 64.0 and 66.2 per cent respectively. Bioengineering Jatropha oil with five microbial antagonists, viz., Pseudomonas fluorescens, Bacillus thuringiensis, Beauveria bassiana, Metarhizium anisopliae and Trichoderma viride revealed a positive interaction. Amongst these, T. viride was found most compatible followed by P. fluorescens, B. thuringiensis, B. bassiana and M. anisopliae. The in vivo studies revealed that P. fluorescens along with Jatropha oil could suppress bacterial wilt of tomato significantly (80%) followed by T. viride + Jatropha oil (60%); B. thuringiensis + Jatropha oil (40 %) and B. bassiana + Jatropha oil (40%). Combination of these bio agents and Jatropha oil also showed better yield of R. solanacearum inoculated tomato plants when compared to application of bio agents alone. Highest yield was recorded in the treatment combination of P. fluorescens + Jatropha oil (315.8 g/plant) followed by T. viride + Jatropha oil (230.1 g/plant), B. thuruingiensis + Jatropha oil (228.58 g/plant) and B. bassiana + Jatropha oil. (171.92 g/plant) Similarly, the yield attributing characters of tomato treated with bio agents and Jatropha oil was found better as compared to application of bio agents alone.