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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Effect of crop and machine parameters on threshing effectiveness and seed quality of basmati rice
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-07) Chauhan, Shiv Sankar; Gupta, O.P.
    Basmati rice is becoming popular all over world. Indian Basmati rice fetches three times higher price than other countries. Recently it was reported that threshing reduces the quality of Basmati rice. Experiment was conducted to study the threshing effectiveness on Basmati paddy. The experiment was conducted on an axial flow multicrop thresher with three varieties of Basmati and one coarse varieties of paddy, with four levels of cylinder speed, three level of moisture content and three level of feed rate. The threshing efficiency was found 100%. Result showed that grain damage and cleaning efficiency increased with the increase in cylinder speed. Maximum grain damage was 0.9% in Pusa Basmati-1 and Basmati-1121 respectively at cylinder speed of 18.21 m/s, moisture content 25.1 per cent and feed rate 960 kg/h. Grain damage of Taraori Basmati, Pusa Basmati-1 and Basmati-1121 is higher than Pant Dhan-12 by 7.3, 19.5 and 24.4 per cent respectively. The cleaning efficiency varied from 91.7 to 99.1% for all the varieties at all cylinder speed, feed rate and moisture content. The maximum cleaning efficiency was observed to be 99.1 percent for Basmati-1121 and minimum 91.7% in case of Pant Dhan-12. Germination percentage was above 80% in all the variety except Pusa Basmati-1. The effect of cylinder speed, moisture content and feed rate were analysed statistically on grain damage, cleaning efficiency and germination percentage. Result showed that effect of these parameters have significant effect. Overall working of thresher was found satisfactory for the selected variety and parameters under study.
  • ThesisItemOpen Access
    Hyetograph-hydrograph transformation model for small ungauged watersheds
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-06) Sachan, Shatendra; Akhilesh Kumar
    The well established techniques used for determination of runoff hydrograph require historical runoff data and other complex information for evaluating various parameters, which are generally not available in case of ungauged watersheds. Therefore, an attempt has been made to develop a model which is capable of transforming available rainfall hyetograph in to direct runoff hydrograph by using information about land use pattern and topographical features of the area. In the development of models, the storm runoff has been estimated by using SCS curve number method. The model formulation was attempted considering uniform and nonuniform rainfall distribution patterns. In case of uniform rainfall distribution, the model was formulated on the basis of one step rainfall input and accordingly named as One Step Rainfall Input Model (OSRIM). While in case of nonuniform rainfall distribution, the entire storm duration was divided into smaller time increments in a way that the rainfall intensity within an increment is almost constant and the model was formulated considering multiple step rainfall input and called as Multiple Step Rainfall Input Model (MSRIM). The developed models were applied for their verification using the observed data of a small hilly watershed known as “Jandoo-Nala watershed” comprising an area of 17.71 ha in Dehradun district of Uttaranchal State. In case of small ungauged watersheds, the developed methodology will be very useful in designing, planning and operation of various soil and water conservation structures, flood control works, water storage & conveyance structures and also in watershed management & planning. It was found that the value of initial abstraction ratio λ = 0.15 provided a better prediction of direct runoff volume using SCS curve number method for the study area. In case of One Step Rainfall Input Model (OSRIM), the coefficient of correlation between model predicted and observed values of the peak rate of runoff was found to be 73.0%. The values of peak rate of runoff predicted by using Multiple Step Rainfall Input Model (MSRIM) were found to be yielding a good correlation with the corresponding observed values as the coefficient of correlation was found to be 83.0%. A non-linear model of exponential form between peak runoff rate (qp, m3/s), rainfall depth (P, mm), maximum potential retention (S, mm) and curve number (CN) was developed having coefficient of determination (R2) as 96.61%. In case of OSRI model, the time to peak coincided with the time of concentration while in the NLR model because of its inherent weakness did not predict time to peak value. It was observed that there was a very good correlation (97.0%) and coefficient of efficiency (97.19%) between the observed and MSRI model predicted time to peak values. The qualitative analysis revealed that, in general, the predicted ordinates of hydrographs of the selected storm events were in reasonably close agreement with the corresponding ordinates of observed hydrographs.
  • ThesisItemOpen Access
    Studies on performance evaluation of wheat straw (Bhusa) combine and ammonia (Urea) treatment of retrieve straw for livestock feeding
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-08) Verma, Shishir Kumar; Thakur, T.C.
    Cereal straw, forming a major part of crop residue is considered as an important feed resource in India and other developing countries. Efforts are underway for enhanced utilization of straw by improving its nutritional value. A limited number of mechanized systems like field balers and straw combines are now available in India for the collection of long straw and bruised straw from combine harvested fields. Ammonia (urea) treatment of wheat straw (bhusa) may be considered as an important option for quality improvement in nutritional value of wheat straw/ bhusa as livestock feed. Three sets of problems namely, performance evaluation of straw (bhusa) combine, ammonia (urea) treatment of wheat straw (bhusa) and nutritional analysis of treated bhusa were identified in this study. A mathematical model was developed to establish the relationships between liquid inflow rate, wetting time, liquid retained, liquid runoff and moisture content of wheat straw (bhusa) for treatment using urea as a source of ammonia. The straw and grain recoveries for wheat variety PBW 2145 by straw combine (delux model „SAGGU‟) before baling were 2001kgDM/ha & 79 kg/ha, 1956 kgDM/ha & 104 kg/ha and 1778 kgDM/ha & 82.3 kg/ha for forward speeds of 1.95, 2.42 and 3.52 km/h, respectively. Straw recovery after baling was found as 1280, 1350 and 1200 kgDM/ha at forward speeds of 2.04, 2.78 and 3.60 km/h, respectively. The split straw percentage by straw combine before baling was found as 91.20, 88.00 and 86.50% for forward speeds of 1.95, 2.42 and 3.52 km/h, respectively. The straw combine produced maximum amount of bruised straw (70-75%) with fine particle size varying between 4 and 8 mm under both the conditions of „before‟ and „after baling‟ which is acceptable as a good quality animal feed. The average field capacity, field efficiency and fuel consumption of straw combine after baling were found as 0.43 ha/h, 75.48 % and 3.90 l/h for the best speed of about 2.78 km/h. The on-farm cost of operation of straw (bhusa) combine was estimated as Rs 1780 per ha (Rs 904 /t) and Rs 1723 per ha (Rs 1286 /t) for „before‟ and „after baling‟ conditions, respectively whereas the off-farm cost which also includes transportation cost of straw bhusa to a distance of 2.5 km was found to be 1915 and 1833 Rs./ha for „before‟ and „after baling‟ conditions, respectively. The break-even point analysis of the straw combine showed that total cost per hectare of straw combine in both cases (before and after baling) gradually reduced with the increase in area of coverage. The cost analysis of straw recovery also indicated that when an area of about 45 ha/year before baling and 75 ha/year after baling is covered by the straw combine then the cost of bhusa recovery per hectare approximately equals to value of wheat straw (bhusa) collected and sold at rates varying as 1000, 1500 and 2000 Rs./t. The minimum area of coverage per year by the straw combine should be more than 75 ha after baling to make recovery of bhusa profitable. The payback period of the straw combine is dependent on the annual area covered as well as the value of wheat straw (bhusa). For an a70 years for respective straw costs for „after baling‟ condition. The depth of layers up to ten layers of 150 mm each had no significant variations in moisture content of ammonia (urea) treated wheat straw (bhusa) and therefore, a column of 1.5 m height comprising of 10 layers of 150 mm each and 1m diameter for a single sprayer nozzle of 1250 g/min discharge rate could be recommended for ammonia (urea) treatment using the developed „Spraying Method‟. The evaluation of urea treated wheat straw (bhusa) of three columns in terms of in-situ nylon bag dry matter digestibility (NBDMD), crude protein (CP) content and ammonical nitrogen (AN) content indicated significant increase in these values over untreated straw (control). On an average NBDMD increased from 43.47 % (untreated) to 59.14 % (treated). The CP content of treated straw was found as 11.89 %, which were 8.33 percentage units greater than untreated straw (3.56 %). Similarly, the AN content was found as 0.838 % which was 0.793 percentage units greater than untreated straw (0.045 %).
  • ThesisItemOpen Access
    Mechanical and thermal characterization of ceramic thermoset composite
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Mohd. Sajid; Sah, P.L.
    In the present thesis work experimental investigation has been carried out to study the effect of mortar particles on mechanical and electrical properties. In this mortar particles at different wt% (0, 24, and 100) have been filled in epoxy resin and the effects of mortar particles on mechanical and thermal properties has been studied. Tests have been conducted on 100 kN servo-hydraulic universal testing machine under displacement mode of control and impact testing machine were used for mechanical testing and electrical conductivity have been studied by using Four Point Probe Conductivity Measuring system. Mechanical test results indicate that the mechanical property of the composite, compression strength with the variation in mortar particle first increases and then decreases. Nevertheless, the tensile strength and impact strength of the composite are decreased as the wt% of mortar particles increased. Electrical conductivity results indicate that it first get increases and then gets decrease as the wt% of mortar particles increased. On the basis of overall study the epoxy filling of 24 wt% of mortar particles is found to be better than other combinations.
  • ThesisItemOpen Access
    Simulation & comparison of various control strategies for BLDC motor and experimental analysis of BLDC motor using FPGA controller
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Singh, Pawan; Srivastava, Ajay
    Brushless DC (BLDC) motor belongs to the class of special electrical machines. Brushless DC motors offer many attractive features like low maintenance, good fault tolerant properties, fast response, noiseless operation, high efficiency, high power density, good reliability and compact construction. As a result, the brushless DC motors are increasingly being used in military, industrial and commercial applications. Its market is rapidly expanding. Since the development of motor, problems were encountered for variable speed but in last decade the continuing technological development in power electronics, microprocessors, adjustable speed drivers, semiconductor chips, have combined to provide reliable and efficient operation at varying loads and varying speeds. In BLDC motors the speed of motor drops with load so the prime objective of closed loop control is to maintain the motor speed constant irrespective of load changes. So closed loop is necessary in applications that demands better control and constant speed. The speed of the motor is fed back and compared with the reference speed continuously. Performance of BLDC motor depends on two factors. The performance of BLDC motor depends on two factors one is design of BLDC motor and second is the control strategies. Various types of control strategies have been proposed in the past for studying the behaviour of the BLDC motor during normal and transient periods. This thesis comprises of two parts. First part deals with simulation and comparison of various control strategies with reference to speed, torque and current response under different loading conditions at different speeds. Simulations were performed in MATLAB/Simulink software. Simulation results concluded that at rated speed, fastest speed control was achieved with PWM control strategy. Second part deals with experimental analysis of BLDC motor using FPGA controller in order to gain better understanding of motor performance and drive system. FPGA controller provided gate pulse for inverter switches based on PWM technique. For experimental analysis 1 HP Out-runner type BLDC motor was run at different speeds under different load and corresponding stator voltages, currents, power factor were measured with the help of FLUKE power logger and efficiency was calculated. Highest efficiency of 88.75 % was achieved at rated speed of 1800 RPM.
  • ThesisItemOpen Access
    Performance investigation of three phase induction motor drive by vector control strategy using Matlab/Simulink
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Sharma, Rahul; Swami, A.K.
    Vector Control or field orientation control (FOC) and Direct Torque Control are becoming the industrial standards for induction motor control. The FOC technique decouples the two components of stator current: one providing the control of flux and the other providing the control of torque. The flux as well as the torque level of the machine is controlled with perpendicular components of the stator current vector in the synchronously rotating reference frame (SRRF). Thus a current control loop is usually realized which controls the stator current and calculates the necessary inverter switching states. In Direct torque control to achieve the decoupling of flux and torque components, the flux and the torque errors are processed in hysteresis controller. The inverter switching states necessary to achieve the flux and torque levels are then directly obtained from a switching table with the stator flux angle as additional input. The motor torque and flux become direct controlled variables and hence, the name — Direct Torque Control. This thesis work gives a contribution for a detailed analysis of between the two control techniques, emphasizing upon the advantages and disadvantages respectively. The performance of the two control schemes is evaluated based on various criteria including the complexity of control and the dynamic performance. The dynamic response of FOC and direct torque control under various operating conditions such as no load, step load, fan load is simulated and examined in MATLAB 2016 environment.
  • ThesisItemOpen Access
    Design, development and performance evaluation of a family size biogas plant using alternate construction material
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Dey, Deeksha; Singh, R.P.
    Anaerobic digesters are assets for economic and clean biogas energy along with management of biodegradable waste like local biomass, agricultural waste etc. Biogas production in agriculture sector is a very fast growing market in developing countries and finds increased interest in many parts of the world. In India, net biogas production per year is about 2.07 billion m3. Different designs of biogas plants are available to provide biogas and fertilizer as residue. Beside, in hilly regions, inadequate production of biogas is experienced at a high cost of construction and installation. Thus, for optimum performance of biogas plant; design, operation efficiency and economic feasibility are vital factors to increase adaptation of small size domestic biogas plant in rural areas. Therefore, a family size biogas plant of capacity 0.5 m3 was designed at low cost of construction and ease of installation and operation. Also, its comparative analysis with conventional biogas plant like Pant RCC, Pant Tarai and prefabricated HDPE biogas plant was performed. All above biogas plants (fixed dome, floating drum and flexible type) were evaluated in three levels of temperature i.e. low, moderate and high. The study shows that daily biogas production per meter cube digester volume was higher in designed seamless HDPE sheet biogas plant as compared to Pant Tarai throughout the experiment. Also, daily biogas production per kg total solids for the designed seamless HDPE sheet biogas plant was comparable in mesophilic temperature range to other biogas plants. However, daily biogas production per kg volatile solids was higher for prefabricated HDPE biogas plant in mesophilic range with respect to other biogas plants. Methane content in biogas was highest of 68.86% in Pant RCC during mesophilic temperature. Further, cost analysis showed that lowest construction and installation cost of biogas plant as compared to Pant RCC, Pant Tarai, Deenbandhu, KVIC, prefabricated HDPE biogas plant was for the designed seamless HDPE biogas plant, both in planes as well as for hilly regions. Thus, flexible designs could be suggested for rural areas.
  • ThesisItemOpen Access
    Comparative evaluation of calibrated temperature-, and radiation-based ET0 equations developed for semi-arid climatic conditions based on standardized FAO56-PM model
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Bind, Shyam Murari; Tomar, A.S.
    The present study was undertaken to calibrate, validate and evaluate different temperature-, and radiation-based ET0 equations on daily, weekly, monthly, and seasonal (crop and weather) basis for semi-arid climatic conditions of Parbhani and Udaipur in comparison to standard FAO56-PM model with two specific objectives as, (i) to calibrate, validate and evaluate performance of various temperature-, and radiation-based ET0 equations in comparison to FAO56-PM model, and (ii) to calibrate and evaluate performance of all considered ET0 equations by using MicrosoftTM Excel Solver in comparison to FAO56-PM model. In this study, individual year was converted into 52 Standard Meteorological Weeks (SMWs), 12 months, three crop seasons (rabi, zaid and kharif) and three weather seasons (winter, summer and monsoon) in tune with CWS-1 format suggested by Indian Meteorological Department, Pune. The MicrosoftTM Excel was used as computing tool for conducting analysis and draw fruitful inferences from them. Prior to analysis, quality control of daily weather was also ensured by detecting missing data and outliers. The results showed that at all timescales, almost all calibrated ET0 equations performed well and extended better results in comparison to their original versions. Further, it was found that, calibrated Hargreaves-Samani M3 equation was found best at both places on daily, weekly, monthly, and weather season basis, while Hargreaves-Samani M1 performed best at both places on crop season basis. Among temperature-based ET0 equations, Romanenko equation was found worst at all timescales for both the places. Among radiation-based ET0 equations, Valiantzas (2) equation performed best while Irmak-Rn ET0 equation performed worst at all timescales for both places. Determination of calibration coefficient of different temperature- and radiation-based ET0 equations by using MicrosoftTM Excel Solver was found at-par in comparison of tedious and time-consuming MicrosoftTM Excel utility.
  • ThesisItemOpen Access
    Forecasting of daily reference evapotranspiration using artificial neural network, adaptive neuro-fuzzy inference system and multiple linear regression
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-07) Sah, Namrata; Kashyap, P.S.