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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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20212
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Subject: Nematology × End date: 2021 × Start date: 2021 × Type: Thesis ×
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    ThesisItemOpen Access
    Biomanagement of disease complex of Meloidogyne incognita and Fusarium oxysporum f.sp ciceri on chickpea (Cicer arientinum., Butler 1918)
    (2021) Roy, Pallabi; Borah, A.
    In the present study on the interaction of Meloidogyne incognita and Fusarium oxysporum f.sp ciceri on chickpea, the result indicated that dual inoculation treatments significantly decreased plant growth parameters over the treatment with M. incognita @1000 J2/kg soil and F. oxysporum @ 2% (w/w). The treatment with M. incognita @1000 J2/kg soil + F. oxysporum @ 2% (w/w) after 15 days of inoculation was statistically superior in decreasing the plant growth parameters of chickpea. However, number of galls, eggmasses, final nematode population was found maximum in single inoculation treatment than dual inoculation treatments. The highest number of galls, eggmasses, final nematode population were observed in the treatment with M. incognita @1000 J2/kg soil. The maximum disease incidence was recorded in the treatment with M. incognita @1000 J2/kg soil and F. oxysporum @ 2% (w/w) after 15 days of inoculation. Studies on the management of disease complex of Meloidogyne incognita and Fusarium oxysporum on chickpea with microbial consortia, vermicompost and Glomus fasiculatum alone or in combination under microplot condition showed that all the treatments differed significantly over untreated control in respect of increaseing plant growth parameters and yield of chickpea. The seed treatment with microbial consortia @ 5ml/l + soil application of vermicompost enriched microbial consortia @ 2t/ha + seed treatment with microbial consortia @ 5ml/l + soil application of Glomus fasciculatum spores/m2 was found to be most effective in increasing plant growth parameters, yield, N,P, and K content in soil. All the treatment significantly decreased the number of galls, eggmasses, nematode population and fungal population in soil and percent disease incidence. In the pilot field trial, conducted at farmers field with the best treatment combination found under microplot trial for the management of disease complex of Meloidogyne incognita and Fusarium oxysporum on chickpea showed that the seed treatment with microbial consortia @ 5ml/l + soil application of vermicompost enriched microbial consortia @ 2t/ha + seed treatment with microbial consortia @ 5ml/l + soil application of Glomus fasciculatum spores/m2 effective in increasing plant growth characters, yield and reducing in number of galls, final nematode population in soil and percent disease incidence over untreated control.
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    ThesisItemOpen Access
    GRAFTING FOR THE MANAGEMENT OF ROOT KNOT NEMATODE, Meloidogyne incognita IN BRINJAL
    (AAU, Jorhat, 2021) Prasanth, Polimera; Bhagawati, B.
    An attempt was made for the management of root knot nematode, Meloidogyne incognitain brinjal through grafting. Thirteen Solanum species were screened against M. incognita. Of these, S. torvum and S. khasianum showed resistant and moderately resistant reactions against M. incognita and remaining species showed highly susceptible reactions against M. incognita. S. torvum and S. khasianum were taken as rootstocks. Liliya and Kokila were taken as scions. Highly susceptible and cultivated hybrids, Liliya and Kokila were grafted on resistant rootstock S. torvum and onmoderately resistant rootstock S. khasianum. Cleft graftingmethod was adopted for grafting. The highest success rate of grafting was recorded on S. torvum× Liliya, followed by S. torvum× Kokila. Liliya and Kokila grafted on S. torvum showed maximum reduction in number of galls, egg masses per root system, final nematode population and rate of reproduction with increased number of fruits per plant, fruit weight, fruit yield per plot and total fruit yield per ha followed by Liliya and Kokila grafted on S. khasianum. Delayed flowering and fruiting was observed in grafted plants as compared to non grafted plants.