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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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20171
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Subject: Plant Breeding × Author: Koch, Bijit × End date: 2017 × Start date: 2017 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    PERFORMANCE EVALUATION OF BIO PRIMING FOR UPLAND DIRECT SEEDED RICE IN ORGANIC CONDITION
    (AAU, Jorhat, 2017-07) Koch, Bijit; Deka, Sharmila Dutta
    Rice is the world’s most important crop and is a staple food for more than half of the world’s population. Worldwide, rice is grown on 161 million hectares, with an annual production of about 744.4 million tons of paddy (FAO, 2014). Rice production and consumption in India have increased during the last quarter of century. In the last two decades, seed priming an effective seed invigoration method has become a common seed treatment to increase the rate and uniformity of emergence and crop establishment in most crops. Bio-priming is a process of biological seed treatment that refers to the combination of seed priming and inoculation of seed with beneficial organism to protect seed and improve the quality. Experimental findings revealed that field emergence percentage significantly varied in response to seed treatment with different bio agents and highest field emergence was observed in T7 (hydration) and least was observed in (T8) control. Effect of seed treatment was non-significant for seedling/m2, but it shows significant variation in growth parameters like seedling height and seedling biomass. Among the vigour indicators root length and shoot length varied significantly in response to different treatments. Plant growth response was found to be non-significant for different seed treatment except total biomass production which varied significantly among the treatments. The total biomass production was found to be higher in treatment with consortium (T6) and Bacillus cereus (T4) .Total biomass production was found to be significantly higher in treatments with 10% reduced seed rate. All the recorded yield and yield attributes were found to be non-responsive to seed priming with bio agents except harvest index. Highest harvest index was observed in treatment (T2) T. harzianum followed by (T8) control and (T7) hydration. The treatment effects of reduced seed rate (10 %) were found to be at par with normal seed rate, it may be because of less competition for inputs in the early vegetative stage. Weed density is found to be affected by the treatment variation at early stage. The highest weed density was observed in treatment T8 (control) and least was observed in treatment T4 (Bacillus cereus) .The laboratory test indicates high positive correlation between field emergence and few vigour indicators viz seed vigour index I, seed vigour index II and seedling dry weight. The present study of seed treatment has significant positive effect on field emergence, hence can be successfully employed for better field emergence in organic condition.