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Bihar Agricultural University, Sabour

Bihar Agricultural University, Sabour established on 5th August, 2010 is a basic and strategic institution supporting more than 500 researchers and educationist towards imparting education at graduate and post graduate level, conducting basic, strategic, applied and adaptive research activities, ensuring effective transfer of technologies and capacity building of farmers and extension personnel. The university has 6 colleges (5 Agriculture and 1 Horticulture) and 12 research stations spread in 3 agro-ecological zones of Bihar. The University also has 21 KVKS established in 20 of the 25 districts falling under the jurisdiction of the University. The degree programmes of the university and its colleges have been accredited by ICAR in 2015-16. The university is also an ISO 9000:2008 certified organisation with International standard operating protocols for maintaining highest standards in teaching, research, extension and training.VisionThe Bihar Agricultural University was established with the objective of improving quality of life of people of state especially famers constituting more than two third of the population. Having set ultimate goal of benefitting society at large, the university intends to achieve it by imparting word-class need based agricultural education, research, extension and public service.

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20203
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Subject: Soil Science and Agriculture Chemistry × End date: 2024 × Start date: 2020 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Soil Resources Mapping of Sabour Block of Bhagalpur District, Bihar
    (Department of Soil Science (Agril. Chemistry), BAU, Sabour, 2020) Bagoria, Neeraj; Vimal, B. K.
    The present study entitled “Soil Resources Mapping of Sabour block of Bhagalpur district, Bihar” represented the soil fertility status and Land Capability Classification. Soil profiles viz. P1, P2, P3 and P4 predominantly were taxonomically observed in three orders namely, Entisols, Inceptisols and Vertisols under investigation and varied from sandy loam in Diara land to clay in Tal land. However, textural class as clay loam was found in agricultural land followed by silt loam under horticultural land. In context of soil fertility, the soil pH of the study area ranged from 6.5 to 8.53 (mean value of 7.52) and 90 per cent of the soil samples categorized under neutral range. The electrical conductivity (EC) varied from 0.10 to 0.160 dSm-1 which comes under almost non saline in nature. The calcium carbonate content in soil ranged from non- calcareous (0.5-1.0 %) to calcareous (>10 %). The range of organic carbon was observed medium (2.05), available nitrogen was low (1.09), available phosphorus was medium (2.11) and available potassium was high (2.70). However, The DTPA Iron content of the study area was very high and sufficient in Copper and Manganese content. But, Zinc deficiency was observed in all Panchayats. In this context, the availability of Copper, Iron, Manganese and Zinc were seen to be decreased with growing pH values. In context of land capability class, the study was placed under class IIIw in Tal and Diara lands which are assessed under flood and water logging during monsoon. However, agricultural land and horticultural lands put under class III followed by class IV. The present investigation helped how to trace out the actual agricultural land out of the total geographical area under RS-GIS domain that dealt the actual mapping for soil fertility status up to block and panchayat level which may be helpful for the management of agricultural land under cereals, pulses, oilseeds and vegetables crops. In view of analyzed facts, maps over soil fertility status may be also helpful towards refinement of the supply chain of the nitrogenous fertilizers.
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    ThesisItemOpen Access
    Fractionation of inorganic Arsenic and determination of its safe limit in irrigation water in rice
    (Department of Soil Science and Agricultural Chemistry, BAU, Sabour, 2020) : Kumari, Preety Bala; Singh, Y. K.
    A pot experiment was conducted with two soil types (alluvial and red) using ten levels (of contaminated irrigation water (0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.50, 1.75, 2.0, 2.25 mg L-1), irrigated for 5 times using rice (Variety: Sushak Samrat) as a test crop to determine the safe limit for irrigation water contaminated with As. The increase in the level of contamination in the irrigation water significantly affected the yield attributing characters and yield in both the soils. The results reveal that the different fractions of arsenic, water soluble arsenic (F1), Aluminium bound arsenic (F2), amorphous iron bound arsenic (F3), crystalline iron bound arsenic (F4) and Calcium bound arsenic (F5)in terms of its profusion followed the order F4 > F2 > F5 > F3 > F1 and F4 > F3 > F2 > F5 > F1across all the doses of As for alluvial soil and red soil respectively. The safe limit of irrigation water in terms of risk assessment expressed as Hazard Quotient (HQ) was 0.75 mg L-1 and the solubility FIAM can effectively predict the As content in rice grain in both the soils. The Tobit Regression Model, which is a censored model served as an effective tool in predicting the safe limit of irrigation water based on the inherent soil As content. In alluvial soil the safe limit for As in irrigation water is from 1.20 to 0.10 mg L-1 and for red soil, the range is from 0.10 to 0.40 mg L-1 based on the available soil As and provided that the As content in rice grain is < 0.4 mg Kg-1. This can be used as an effective protocol for estimation of safe limits for irrigation water which will vary for diverse soils having varied physio-chemical properties acting as a sink and plays the role for water-soil-food transfer of the contaminant.
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    ThesisItemOpen Access
    Adsorption-Desorption behaviour of sulphur under conservation agriculture
    (Department of Soil Science and Agricultural Chemistry, BAU, Sabour, 2020) Kumari, Kirti; Shambhavi, Shweta
    Sulphur is the essential secondary macronutrient element required for optimum growth, metabolism and development of all plants and is rightly called as fourth major plant nutrient. It is essential for synthesis of amino acid like methionine, cystine and cysteine and resembles Nitrogen for many functions in plant and synergistic to N fixation and nodule development in legume. In soil S mostly remains in organic combination, constituting more than 95 % of total sulfur. Sulphate sulfur is the form plant prefers to uptake and its availability depends upon the mineralization of organic sulfur in soil. Soil tillage is the basic and key to reducing soil-related constraints in crop production. It has a long-term effect on soil properties and crop growth. CA systems are currently being practiced on a wide range of soil types, environments and numerous crops and cropping systems. Because of the possibilities to increase productivity and improve soil health, CA becomes a crucial part of the national polices for an agricultural production system. Adsorption desorption characteristics are useful for describing, studying and managing the sulfur status of soils.The concentration of sulphate in soil solution, as predicted by sulphate sorption-desorption curve provides a valuable information on sulfur availability to crop plants. The experimental soil was sandy loam in texture, neutral in reaction, low in N, medium in organic carbon and K and high in available P. As per taxonomic classification the soil falls under the order “Inceptisols”. The soil samples from the depth of 0-20 cm was collected from the field experiment on conservation agriculture with six maize based cropping systems and three tillage practices laid out in split plot design with tillage practices being main plot and cropping system in sub-plots replicated thrice. The samples were collected before Maize in Kharif 2019 and analysed for various soil physico-chemical properties, available N, P and K, total N, free Fe and Al oxides as well as different forms of sulphur and adsorption and desorption behaviour of sulphur in soil. Continuous practice of reduced tillage and different cropping systems led to improvement in soil physico-chemical properties such as soil pH, OC, available N, P, K, S, total N, and free iron and aluminum oxide. Among the different forms of sulphur studied it was found that all the forms were higher under zero tillage and soybean-maize cropping system except adsorbed sulphur which was higher under conventional and maize-maize cropping system. Available Sulphur, Water soluble sulphur (WSS), Heat Soluble Sulphur (HSS), Adsorbed Sulphur (AdS) and Organic sulphur (OS) was on an average 3.99, 3.57, 11.38, 3.67 and 64.06 %, respectively of Total Sulphur. Amongst all the forms studied, Organic Sulphur was the most dominant form of Sulphur. Maize yield and uptake was found to have positive and significant correlation with all the forms of S except adsorbed as it’s not a bioavailable form. The adsorption data was best fitted in Langmuir equation as per the R2 values are concerned. The adsorption maxima followed the order CT>PRB>ZT under tillage system and for cropping system the highest adsorption was in maize-wheat system. The adsorption data also fitted well in Freundlich isotherm having higher R2 values. The extent of adsorption followed similar order as observed as that in case of adsorption maximum under Langmuir isotherm. In terms of adsorption maxima (Langmuir) and the extent of adsorption (Freundlich) the tillage practices followed the order CT>PRB>ZT while cropping systems were in the order of C2>C5>C3>C4>C1> C6.While, desorption of S was observed to be minimum under CT followed by PRB followed by ZT. While in terms of cropping system, the minimum was in maize-maize while maximum under soybean-maize across all tillage systems. It can be concluded that zero tillage and soybean-maize cropping system performed better in increasing the sulphur status of soil and the linear plot of the adsorption data were good fitted in both Langmuir and Freundlich equation with best fit in Langmuir equation.