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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
    PERFORMANCE OF AEROBIC RICE (Oryza sativa L) UNDER DIFFERENT MICRO-CLIMATIC REGIMES
    (AAU, Jorhat, 2018-07) Borah, Bidisha; Pathak, Kalyan
    A field experiment entitled “Performance of aerobic rice (Oryza sativa L.) under different micro-climatic regimes” was carried out at Instructional-cum- Research (ICR) farm, Assam Agricultural University, Jorhat during autumn season of 2017. The experiment was laid out in split-plot design with three replications. The treatments of the experiment consisted of four micro-climatic regimes in main plot viz., sowing of seed on 15th February (M1), 1st March (M2), 16th March (M3) and 1st April (M4) along with four different rice varieties viz., CR-Dhan 205 (V1), CR-Dhan 203 (V2), CR-Dhan 204 (V3) and Inglongkiri (V4) in sub plot. The soil of the experimental plot was sandy loam, acidic in reaction (pH 5.2), medium in organic carbon content (0.62 %), medium in available N (311.5 kg/ha), low in available P2O5 (15.8 kg/ha) and medium in available K2O (194.0 kg /ha). The total rainfall received during the experimental period was 1552.6 mm. The results of the experiment revealed that the four different micro-climatic regimes brought significant effect on morphological and physiological characters in terms of plant population, dry matter accumulation, number of leaves/plant, leaf area index, yield attributing characters, grain and straw yield and NPK-uptake of aerobic rice. The micro-climatic regime associated with sowing of seed on April 1st recorded higher values for all those characters. The highest grain (3004 kg/ha) and straw (4854 kg/ha) yields were obtained in April 1st sown crop which was at par with 16th March sowing. The uptake of nitrogen, phosphorous and potassium in grain, straw and total uptake were significantly higher in April 1st sown crop. The favorable micro-climatic parameters viz., canopy temperature, light intensity, soil temperature and soil moisture in all stages of crop growth were observed in micro-climatic regime associated with 1st April sown crop. Different rice varieties could bring about significant differences in growth parameters, yield attributing characters, grain and straw yield and NPK-uptake. Among all the rice varieties, CR-Dhan 203 recorded the highest value in terms of plant population, dry matter accumulation, number of leaves/plant, leaf area index, yield attributing characters and ultimately in grain yield followed by Inglongkiri, CRDhan 204 and CR-Dhan 205. The highest grain yield of 2860 kg/ha recorded in rice variety CR-Dhan 203 was significantly superior to that of other varieties except Inglongkiri. The rice variety CR-Dhan 203 also recorded the highest NPK- uptake. In terms of economics, the treatment combination of aerobic rice variety CRDhan 203 sown on 1st April resulted the highest benefit-cost ratio (2.66) and was found to be the best treatment combination followed by the variety Inglongkiri sown on 1st April (2.56).