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Subject: Agricultural Engineering ×

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Now showing 1 - 9 of 27
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    ThesisItemOpen Access
    INVESTIGATION OF THE VARIABILITY OF SPI AND SPEI DROUGHT INDICES USING DISCRETE WAVELET TRANSFORMATION IN CONJUNCTION WITH THE MANN KENDALL TEST
    (COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY GODHRA, 2021) BRAHMBHATT MANTHANKUMAR PRAVINBHAI; Dr. M. K. Tiwari
    Drought is the most perplexing hydro-meteorological hazard, which occurs due to climate change and happens in all climate zones. A common method for the evaluation of drought condition is the historical analysis of drought indices, in which trend detection and analysis assumes a significant job. The presence of trends in drought condition is an indication of potential climate fluctuation and environmental change. The identification of such trends is essential for the planning and design of sustainable water resources. The primary reason of the trend assessment is to discover what time scales are influencing the trends. This study presents an analysis of drought variability in the middle Gujarat region for the time span of 1986-2015. As a measure of drought intensity, standardized precipitation index (SPI) and standardized precipitation evapotranspiration index (SPEI) were investigated seasonally and annually. Mann Kendall (MK) test was applied to recognize the trends and Sen’s slope estimator was used to calculate the magnitude of trend.
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    ThesisItemOpen Access
    IRRIGATION SCHEDULING OF MAIZE (Zea Mays L.) UNDER MULCHED CONDITIONS IN SEMI-ARID REGION
    (COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY, GODHRA, 2019) Bhargav Anurag Mangalbhai; Dr. R. Subbaiah
    A field experiment entitled “IRRIGATION SCHEDULING OF MAIZE (Zea Mays L.) UNDER MULCHED CONDITIONS IN SEMI ARID REGION” was carried out during rabi, 2018-19 on sandy loam soils of farm of College of Agricultural Engineering & Technology, Godhra, Panchmahal, Gujarat. The experiment was laid out in a strip plot design replicated four times. The treatments consisted of three levels of irrigation viz., IW/CPE ratio of 0.6 (I1), IW/CPE ratio of 0.8 (I2) and IW/CPE ratio of 1.0 (I3) assigned to main plots and three mulching and control treatment viz., No Mulch (A0), Reflective Silver Plastic Mulch (A1), Paddy Straw Mulch(A2) and Biodegradable plastic mulch(A3) allotted to sub plots.
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    ThesisItemOpen Access
    DEVELOPMENT OF PUSH TYPE BATTERY POWERED REAPER
    (COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY GODHRA, 2017) NIKHLESH KUMAR VERMA; Dr. Pankaj Gupta
    Harvesting of crop is one of the important agricultural operations which demand considerable amount of labour. The availability and cost of labour during harvesting season are the serious problem. The shortage of labour during harvesting season and vagaries of the weather causes great losses to the farmers.
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    ThesisItemOpen Access
    FARMERS’ AND DEALERS’ SATISFACTION AND BRAND PREFERENCE FOR SEED DRILL IN RAJKOT AND JUNAGADH DISTRICTS OF GUJARAT
    (International Agribusiness Management Institute Anand Agricultural University Anand, 2017) Malaviya Abhishek V.; Dr. Ritambhara Singh
    Mechanization has an important role to play in Indian agriculture. Given the low levels of mechanization in Indian farming, there is high scope to improve level of mechanization. The fast changing economic environment globally as well as locally, has a strong bearing on the perception of customers, dealers and other stakeholders in any industry including farm machinery industry. Scanty literature is available to understand the dynamic change in farm machinery industry with focus on market.
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    ThesisItemOpen Access
    DEVELOPMENT AND PERFORMANCE EVALUATION OF MANUALLY OPERATED CONO-WEEDER FOR PADDY CROP
    (COLLEGE OF AGRICULTURAL ENGINEERING & TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY GODHRA, 2016) HITESHKUMAR BABUBHAI SHAKYA; Dr. R.SWARNKAR
    In middle Gujarat region, weeding operation in wetland paddy is largely done by hand or Khurpi. Another method is the use of mechanical weeders viz., manual or power weeders i.e. engine or tractor operated weeder. Power weeder is not suitable for wetland condition due to increased weight and operational difficulties in puddle field condition. Japanese paddy weeder and TNAU conoweeder are the package equipments and largely adopted by the farmers of the region.
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    ThesisItemOpen Access
    COMPARATIVE PERFORMANCE OF DRIP AND FURROW IRRIGATED TOMATO CROP IN PANCHMAHAL DISTRICT OF GUJARAT
    (COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY, GODHRA, 2016) BHANDERI HEPIN D; Dr. M. L. Gaur
    COMPARATIVE PERFORMANCE OF DRIP AND FURROW IRRIGATED TOMATO CROP IN PANCHMAHAL DISTRICT OF GUJARAT
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    ThesisItemOpen Access
    CANAL BASED IRRIGATION SCHEDULING AND CONJUNCTIVE WATER USE PLANNING FOR OPTIMAL CROPPING PATTERN IN SELECTED PANAM CANAL COMMAND IN PANCHMAHAL DISTRICT, GUJARAT
    (COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY, GODHRA, 2017-06) DEEPAK KUMAR; Dr. M. K. Tiwari
    Agriculture is the centre to all strategies for planned socio-economic development of our country. In India 91.6% of the water is used for irrigation purpose as compared to 84% in overall Asia & 71% in the world . In spite of these significant gains, the agriculture sector faces increasing criticism for a perceived lack of performance, unsustainable practices, and excessive adverse environmental impact. Improvement in the water use efficiency through proper management strategies as well as further increase in irrigation potential is crucial to avoid the envisaged water crisis and to meet the future food demand. The irrigation scheduling needs to be carried out with the objectives of improving the system operation
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    ThesisItemOpen Access
    FOAM MAT DRYING OF CUSTARD APPLE PULP AND STORAGE STABILITY OF CUSTARD APPLE POWDER
    (COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY, GODHRA, 2017) KHODIFAD BHARGAVBHAI C; Dr. Navneet Kumar
    The foaming properties (foam expansion, foam density and foam stability) of custard apple pulp were carried out at concentration of egg albumen (0, 5, 10, 15 and 20%, w/w) with concentration of methyl cellulose (0.0, 0.125, 0.25, 0.375 and 0.50%, w/w) and whipping time (5, 10, 15, 20 and 25 min). The drying experiments of optimized foamed custard apple pulp were carried out at temperature 60, 65, 70 & 75°C and at drying thickness of 2, 4, 6 and 8 mm. Drying characteristics of thin layer custard apple pulp were evaluated. Mathematical models were fitted to fit drying data of foamed custard apple pulp. The different biochemical parameters, powder recovery and sensory evaluation of different drying treatments were observed during the experimental work. The storage stability of optimized custard apple powder was evaluated at 30 days interval of storage period using laminated aluminum foil pouch & polyethylene bag. The compromised optimum condition for maximum expansion, stability and minimum density was obtained at egg albumin concentration, methyl cellulose concentration and whipping time of 15%, 0.37% and 17.32 min respectively. The drying time to reach final moisture content for custard apple pulp were 90 to140, 120 to 210, 150 to 290 and 180 to 370 min at drying thickness of 2, 4, 6 and 8 mm, respectively for selected temperature range (60-75°C). Twelve commonly used models were tested to fit the experimental data of foamed custard apple pulp. The R2 value of Hii’s model was higher (0.9956), and corresponding χ2 (0.0005) and RMSE (0.0175) values were lower than other models, which indicate that the model fitted very well to the experimental data. The average values of effective diffusivities of foamed custard apple pulp were varied from 2.01 × 10-08 to 2.04 × 10-07. The activation energy varied from 29.99 to 50.52 kJ/mol with an average value of 41.45 kJ/mol. The maximum ascorbic acid and total sugar were 11.36 mg/100g and 10.53 g/100g observed at 60 and 65°C with thickness of 2 and 4 mm and maximum sensory evaluation 8.25 was observed at 65°C at thickness of 4 mm. During the storage, the average colour-L* values decreased, whereas coloura* values, colour-b* values and total colour deference (ΔE) value increased with storage period. Colour change was more pronounced in packages without vacuum and glass bottle as compared to laminated aluminium foil pouch and Polyethylene bag with vacuum. The average ascorbic acid, total sugar and overall acceptability were more in case of packaging (laminated aluminium foil pouch and polyethylene bag) under vacuum condition as compared to glass bottle followed by (laminated aluminium foil pouch and polyethylene bag) without vacuum condition. The zero-order model is recommended for the prediction of colour-L*, colour-a* value, moisture content, ascorbic acid and total sugar of custard apple powder during storage period due to higher R2 and lower χ² and RMSE values.
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    ThesisItemOpen Access
    TO STUDY DIFFERENT METHODS OF POST-HARVEST OPERATIONS OF BAJRI CROP WITH SPECIAL REFERENCE TO POWER REQUIREMENT AND COST OF OPERATIONS
    (AAU, Anand, 1962) GUJARATI, JAYANT BABULAL; Patel, S. M.
    Indian Government’s policy of self-sufficient in food production was given due weightage in the First and second five year plans. The same is continued in the Third year plan. Uptill now self-sufficiency in food crops has not been achieved to the desired extent on account of many factors.Various causes are working against this burning problem of the nation. The tendency of the farmers for having more area under cash crops seems to be the root cause. The net income per acre from cash crop is more than hat of food crops.