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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: Soil Sciences × Author: Basumatary, Danswrang × Start date: 2010 × Type: Thesis ×
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    ThesisItemOpen Access
    LAND EVALUATION FOR CROP INTENSIFICATION IN BUMNOI-MORNOI WATERSHED OF KOKRAJHAR DISTRICT OF ASSAM USING REMOTE SENSING AND GIS TECHIQUES
    (AAU, Jorhat, 2017-07) Basumatary, Danswrang; Dutta, Marami
    The present study was undertaken in Bumnoi-mornoi watershed of Kokrajhar district of Assam in order to characterize and prepare soil resource maps, to study soil site suitability and to find out the related constraints for crop production. Altogether six profiles and twenty two surface samples were collected from two different physiographic units viz., alluvial plain and flood plain. The samples were analyzed for various morphological and physic-chemical properties. The dominant hue of soil colour was 10YR, except in sub surface C horizon of P1 (AP) where it was 7.5YR. Colour value ranged from 3 to 6 and chroma from 1 to 6. Yellowish red (2.5YR 4/6) to reddish yellow (7.5YR 7/6) mottles were observed in the soils. Wide variations were observed in soil textural class varying from sand to clay loam. The structure of the soil varied from medium, weak to moderate sub angular blocky at the surface to very fine to medium, week to moderate sub angular blocky, massive and single grain structure. Organic matter content in the soil varied from 0.07 to 3.13 g kg-1, the highest being observed in the surface Ap horizon of P3. Soil pH varied from 4.7 to 6.2. Sand, silt and clay contents in these soils varied from 23.3 to 89.2, 9.9 to 60, and 1.8 to 22.1 per cent, respectively. Among the exchangeable cations, Ca2+ was the dominant cation followed by Mg2+, Na+ and K+. CEC of the soils varied from 3.5 to 10.2 cmol (p+) kg-1. Available N varied from 13.44 to 448.0 kg ha-1, available P2O5 varied from 0.92 to 55.70 kg ha-1 and available K2O varied from 137.2 to 451.0 kg ha-1, respectively. The studied soils were classified as Aquic Dystrudepts (P1), Oxyaquic Dystrudepts (P2, P4), Typic Dystrudepts (P3), Aquic Udorthents (P5) and Fluvaquentic Epiaquepts (P6). The productivity of the soils for crop production varied from poor to good in alluvial plain, and poor to average in flood plain. Potential productivity varied from average to good in alluvial plain and flood plain, respectively. The co-efficient of improvement (CI) values indicated that the productivity of the alluvial plain and flood plain soils can be increased to maximum extend of 2.22 to 1.88, respectively. Soil site suitability assessment showed that the soils were moderately suitable (S2) to permanently unsuitable (N2) for Sali rice, Ahu rice, Potato and Maize. Soils were found to be very suitable (S1) to permanently not suitable (N2) for Banana. For pineapple, the soils were found to be very suitable (S1) to moderately suitable (S3). Various thematic and soil site suitability maps along with potential productivity maps of the study area were prepared using remote sensing and GIS techniques.