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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
    Fertilizer management and sulphur nutrition of toria in rice fallow under rainfed condition
    (AAU, Jorhat, 2018-07) Basumatary, Anjali; Ojha, N. J.
    A field experiment entitled “Fertilizer management and sulphur nutrition of toria in rice fallow under rainfed condition” was conducted at Instructional-cum-Research (ICR) Farm, Assam Agricultural University, Jorhat during rabi seasons of 2016-17 and 2017-18 with a view to find out the fertilizer dose and sulphur requirement of late sown toria (Jeuti). The experiment was laid out in factorial randomized block design with three replications. The treatment consisted of three levels of NPK viz.,F1: 30.00-26.25-11.25 kg N-P2O5-K2O/ha (75% of RDF), F2: 40.00-35.00-15.00 kg N-P2O5-K2O/ha (100% of RDF) and F3: 50.00-43.75-18.75 kg N-P2O5-K2O/ha (125% of RDF) and five levels of sulphur S1: 0 kg S/ha, S2: 5 kg S/ha, S3: 10 kg S/ha, S4: 15 kg S/ha and S5: 20 kg S/ha. The soils of the experimental site was sandy loam in texture, acidic in reaction (pH- 5.4 and 5.3), medium in organic carbon (0.50% and 0.48%), available N (313.60 kg/ha and 298.24 kg/ha), and available K2O (174.72 kg/ha and 170 kg/ha) and low in available P2O5 (20.51 kg/ha and 19.95 kg/ha) and available S (16.24 kg/ha and 15.00 kg/ha) in the year 2016-17 and 2017-18, respectively. Among all the biometric observations growth, yield attributing characteristics, seed and stover yields were significantly influenced due to application of NPK levels. Application of 50.00-43.75-18.75 kg N-P2O5-K2O/ha (125% of RDF) gave significantly higher values in almost all the characters under study which was statistically at par with 40.00-35.00-15.00 kg N-P2O5-K2O/ha (100% of RDF). The higher seed yield (824.53 and 799.33 kg/ha in both the years, respectively) was recorded by application of 50.00-43.75-18.75 kg N-P2O5-K2O/ha (125% of RDF) which was at par with the seed yield (796.60 and 766.40 kg/ha in both years, respectively) obtained by application of 40.00-35.00-15.00 kg N-P2O5-K2O/ha (100% of RDF). Oil content, oil yield, N, P, K and S content and uptake also increased with increasing levels of NPK. Experimental findings revealed that the growth and yield attributing characters were increased with increasing levels of sulphur. All the parameters were highest at 20 kg S/ha which produced significantly higher seed yield (910.89 and 885.49 kg/ha in both the years, respectively) as compared to other levels. As regard to oil content, oil yield, N, P, K and S content and uptake, the values were significantly higher with 20 kg S/ha. The highest agronomic efficiency and apparent recovery was also recorded at 20 kg S/ha. The highest interaction effect was recorded due to combined application of 50.00-43.75-18.75 kg N-P2O5-K2O/ha (125% of RDF) and 20 kg S/ha in respect of number of seeds/siliqua, seed, stover and oil yield and N uptake which was at par with combined application of 40.00-35.00-15.00 kg N-P2O5-K2O/ha (100% of RDF) and 20 kg S/ha. In terms of economics, the highest net return ( 30739.88 and 29243.72 in both the years, respectively) and benefit:cost ratio (2.38 and 2.32, in both the years, respectively) was obtained by combined application of 40.00-35.00-15.00 kg N-P2O5-K2O/ha (100% RDF) and 20 kg S/ha.