irrigation study Articles
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Precision Irrigation - Case Study
The NIAB EMR WET (Water Efficient Technologies) Centre houses an integrated portfolio of cutting-edge growing techniques and trickle irrigation systems for the soft fruit sector. It provides commercial scale demonstrations, one to one expert technical advice, and training workshops. The Centre’s commercially available Precision Irrigation Package system features our SM150T Soil Moisture ...
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Algae control in irrigation case study
Reduction of aerobic bacteria and algae in irrigation reservoir Analyzed parameters After finalizing the test the following was observed: strong reduction in algae and aerobic bacteria concentration. This lower amount in micro-organism concentration, in the water leads to lower biochemical oxygen demand (BOD). This subsequently leads to the improvement of the quality of the potable water. This ...
By LG Sonic
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Group decision-making in land evaluation for irrigation: a case study from Serbia
Presented in this paper is a methodology for a spatially based multi-criteria evaluation of land suitability for irrigation (IR). A group of experts use the analytic hierarchy process (AHP) and the consensus convergence model (CCM) to define weights of factors relevant in validating areas of land as suitable for IR and to develop IR suitability maps in the geographic information system (GIS) ...
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CSG Irrigation Scheme - Case Study
Description: Treatment of up to 10 megalitres per day of water from the gas extraction process to bring it to irrigation quality. Location: Injune Western QLD Scope: design, supply, installation and commission of the water treatment system including pH adjustment, iron removal, filtration and SAR amendment. Full automation and monitoring of the treatment plant flows and water ...
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How does participatory irrigation management work? A study of selected water users' associations in Anand district of Gujarat, western India
Measuring the performance of water users' associations (WUAs) is a complex task. Literature associates a large number of parameters with their success and failure. This paper presents an in-depth study of two WUAs that are considered to be functioning well by the irrigation department in Anand, India. It discusses some new issues and innovations being tried out in Anand, namely: (1) ...
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Irrigation demand modelling using the UKCP09 weather generator: lessons learned
The determination of irrigation demand is typically based on crop modelling using a long historic record of local daily weather data. However, there are rarely adequate weather station records near to given sites; often any local records cover a limited number of years, are incomplete, costly or are of poor quality. This paper examines whether version 1 of the UKCP09 weather generator can ...
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Irrigation water demand and implications for groundwater pricing in Pakistan
This study employs the positive mathematical programming (PMP) approach to estimate groundwater derived demand for irrigation using a cross-sectional dataset of 200 predominantly groundwater irrigated farms from the Punjab province of Pakistan. First, we find that the PMP optimal solution uses less water than what is available (being extracted) in order to make farmers allocate all the ...
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Changes in water demands under adaptation actions to climate change in an irrigation district
Climate change will affect the water balance of irrigated agriculture. Therefore, farmers and irrigation managers should consider adapting to new scenarios. Changes in water demands in a Mexican irrigation district were studied using an irrigation-scheduling model. The impact on water demands of two potential adaptation actions, adjusting planting season and using longer-season varieties ...
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International chocolate company Giant lysimeters for cocoa irrigation research - Case Study
On of our biggest projects till now has been planning and installing a system of 24 giant lysimeters in a cocoa research farm. Due to climate changes cocoa plantations are struggling to adjust to the new conditions in the tropical areas. This lysimeter system was designed according to our clients needs, determined to find the best irrigation plan for cocoa plantations around the world. ...
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Sustaining participation in irrigation systems of Ethiopia: what have we learned about water user associations?
Community participation, defined as engaging users of schemes in the decision-making processes for the planning and implementation of irrigation projects, is critical for the sustainability of irrigation schemes. This study was carried out in three regional states of Ethiopia to investigate the contribution of water user associations (WUAs) to sustaining participation in irrigation projects. ...
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Effects of changes in climatic variables on maize crop water requirements in Huang–Huai–Hai watersheds, China
The study of crop water requirements (CWR) under climate change is critical for reasonable crop irrigation. In the present study, the effects of changes in climatic variables from 1961 to 2010 on maize CWR in Huang–Huai–Hai (HHH) watersheds in China were investigated. Five daily climatic factors including maximum temperature (Tmax), minimum temperature (Tmin), wind speed (u2), ...
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Multi-temporal variation in water consumption of summer maize as determined by the Water Transformation Dynamical Processes Experimental Device
A better understanding of the multi-temporal variation in evapotranspiration (ET) at different crop growth stages is the key for determining a reasonable irrigation schedule. In this study, a new device known as ‘Water Transformation Dynamical Processes Experimental Device’ (WTDPED) was used to monitor ET for maize under controlled environmental and groundwater conditions, and the ...
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Soil carbon levels in irrigated western corn belt rotations
Proposals promoting the use of massive amounts of crop residues and other lignocellulosic biomass for biofuel production have increased the need for evaluation of the sustainability of cropping practices and their effect on environment quality. Our objective was to evaluate the effects of crop rotation and N fertilizer management and their stover production characteristics on soil organic carbon ...
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Water efficiency of agricultural production in China: regional comparison from 1999 to 2002
We apply stochastic frontier analysis (SFA) techniques to a provincial level data set to measure technical and water efficiency in China's agricultural production from 1999 to 2002. The determinants of the efficiencies are identified together with the physical determinant structure of the irrigation factor, which refers to the water use per irrigated land area. The study yields the following ...
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Transferring irrigation management to farmer's associations: Evidence from the Philippines
Irrigation management transfer (IMT) is an important strategy among donors and governments that aims to strengthen farmer control over water and irrigation infrastructure. In this study, we use data from a survey of 68 irrigator associations (IAs) and 1020 farm households in the Philippines to examine the impact of IMT on irrigation association performance and on rice yields. We find that the ...
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Water allocation reform to meet environmental uses while sustaining irrigation: a case study of the Murray–Darling Basin, Australia
Governments are developing policy to reallocate water to environmental uses in many of the world's major river basins developed for irrigation. These policies can place considerable pressure on the irrigation sector to adjust, and may be perceived to conflict with food security and rural development goals. This paper reviews the literature examining opportunities to reduce irrigation ...
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Smart Irrigation Month Case Study
The City of Carmel, Ind., has partnered with irrigation professionals to promote efficient water use and green best practices. In June 2008, a coalition of irrigation experts — including six contractors, a designer and two distributors — met with water department officials to discuss how best to educate residents about solutions to save water and money. Irrigation Association members ...
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Singer`s algorithm controls farm irrigation - Case Study
Their Challenge On the San Xavier Reservation near Tucson, Arizona, the Tohono O’odom Nation grows organic alfalfa for racing horses plus fruits and vegetables. Thanks to Singer Valve, San Xavier is home to a sophisticated flood irrigation system that consists of one 16” (400 mm) globe style and eight 16” angle style valves and five storage tanks each with its own control ...
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Discerning shifting irrigation practices from passive microwave radiometry over Punjab and Haryana
Overexploitation of groundwater (GW) in the recent past is a well-known fact for the Punjab and Haryana region of India, as reported by several studies using satellite-based gravity anomaly from the Gravity Recovery and Climate Experiment mission and also by using observed data. This decline in GW has enforced the Punjab Preservation of Sub-Soil Water Act 2009, and resulted in change in rice ...
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Colorado Irrigation Canal Channels - Case Study
Project Background “Different materials to protect canal liners had been tried in irrigation canals across the West over the past 15 or 20 years. One typical method uses a low cost earthen material like clay. Over time, however, these systems begin to crack and start to leak. It’s not a very efficient way to convey water,” notes Joe Kaul, Kaul Corporation, Presto ...
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