IMPACT ASSESSMENT OF COMMUNITY BASED MICRO IRRIGATION SYSTEM

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dc.contributor.advisorMukhrjee, A.P.
dc.contributor.advisorRejani, R.
dc.contributor.advisorTripathi, M.P.
dc.contributor.advisorRathore, A.L.
dc.contributor.advisorDave, A.K.
dc.contributor.authorSuryadevara, Deepika
dc.date.accessioned2016-12-19T11:20:49Z
dc.date.available2016-12-19T11:20:49Z
dc.date.issued2016
dc.description.abstractGlobal warming is having severe effect on rainfed agriculture and is leading towards over exploitation of ground water. Huge investments are being incurred by the farmers for digging bore wells to meet the irrigation requirements and failure of these wells, leaves most of the farmers in debt. Reducing the over exploitation of ground water and its optimal utilization for irrigation is the need of the hour especially in low rainfall areas. In order to address this problem, Andhra Pradesh Government has started a project on Andhra Pradesh Draught Adaptation Initiative (APDAI) in the year 2012 in which water needs to be shared by Borewell owners (BWO) and Non borewell owners (NBWO) by pooling the bore wells and irrigating through micro irrigation systems. Primary objective of the project was to protect the rainfed crop during prolonged dry spells. The present study was undertaken for ground water sharing groups each from the three mandals viz. Yerraguntla group from Garladinne mandal, Eedulavanka group of Nallamada mandal and T-kothapally of Goothy mandal of Ananthapur district in Andhra Pradesh. The main objectives of the present study were to assess the Community Based Micro Irrigation System (CBMIS) designs for its effectiveness, assessment of operational schedules, preparation of optimal operational plan in terms of equity and evaluation of overall impact of the CBMIS. The study was based on the field data collected from the Department of Agriculture, concerned Non Government Organizations (NGOs) and farmers of the above selected CBMIS groups. The CBMIS groups were successfully operated and maintained by both beneficiaries and NGOs since 2012. In order to make judicious use of water and to improve the efficiency of CBMIS, the designs and operating schedules were assessed. The results indicated that before CBMIS NBWO have completely lost the crop due to prolonged dry spells even during kharif season. After adoption of CBMIS, even under severe drought conditions, the farmers of the two groups were receiving some minimum benefits so that they were not in complete loss. On the other hand in Yerraguntla group 55.7% of NBWO have experienced negligible yields. The reason behind this may be attributed mainly to improper operating schedules followed in Yerraguntla group. The operating schedules are redesigned based on the crop water requirement and water availability. It was found that groundnut can be irrigated with an irrigation frequency of 11 days using sprinkler irrigation system. The study recorded an improvement in water use efficiency (WUE) under critical irrigation (CI) from 0.35 kg (ha-mm)-1 to 2.0 kg (ha-mm)-1 in Yerraguntla, 0.32 kg (ha-mm)-1 to 2.46 kg (ha-mm)-1 in Eedulavanka and 0.26 kg (ha-mm)-1 to 2.02 kg (ha-mm)-1 in T-kothapally. It was also observed that there were remarkable changes in the livelihood, cultivated area and crop production under rainfed conditions with critical irrigation. Further the study recommended that the revised operating schedules can bring more area under irrigation with qualitative and quantitative improvement of the produce during kharif and rabi seasons. The beneficiaries of CBMIS are now ready as a group to encounter any sort of drought situation. (Key Words: Community irrigation, sprinkler irrigation design, evapotranspiration, crop water requirement, operating schedules, social and economic assessment)en_US
dc.identifier.citation105 p.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/90943
dc.language.isoenen_US
dc.subSoil and Water Engineeringen_US
dc.these.typeM.Sc
dc.titleIMPACT ASSESSMENT OF COMMUNITY BASED MICRO IRRIGATION SYSTEMen_US
dc.typeThesisen_US
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