irrigation study Articles
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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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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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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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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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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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Turf Farm Irrigation Scheme - Case Study
Description: Irrigation of 100 hectares of turf for commercial sale. Location: Sunshine Coast SE QLD Scope:Turf Farm Irrigation Design supply installation and commissioning of pumping, pipeline and irrigation system including chemical injection for pH adjustment. Dual 30 kw electric pump sets with electrical control ,150mm PVC pipeline, Trailco 50 metre boom irrigator, ...
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Solution for Submerged Flow Monitoring in Raymond Irrigation District - Case Study
Raymond Irrigation District (RID) measures the flow rate of water delivered to over 46,000 acres of irrigated land and 300 municipal and agricultural water users in Southern Alberta, Canada. Concrete Water Culverts Before Canal is in Operation Most of the RID’s flow monitoring applications are in open channels or partially filled culverts. For help with this submerged culvert ...
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Wastewater retreatment and reuse system for agricultural irrigation in rural villages
Climate changes and continuous population growth increase water demands that will not be met by traditional water resources, like surface and ground water. To handle increased water demand, treated municipal wastewater is offered to farmers for agricultural irrigation. This study aimed to enhance the effluent quality from worn-out sewage treatment facilities in rural villages, retreat effluent ...
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Yield and water use response of cuphea to irrigation in the Northern Corn belt
Cuphea (Cuphea viscosissima Jacq. x C. lanceolata W.T. Aiton) may be prone to drought stress, yet little is known about the yield response of this new oilseed crop to irrigation. A field study was conducted in western Minnesota on a Barnes loam soil (fine-loamy, mixed, superactive, frigid Calcic Hapludolls) in 2002 and 2003 to compare yield and water use of irrigated and nonirrigated cuphea. ...
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Delta Drainage and Irrigation System - Case Study
Background Delta, British Columbia is located in the Fraser River delta on the shores of the Pacific Ocean, just south of the City of Vancouver. Delta comprises mostly agricultural land, with typical ground elevations near sea level. Levees protect the area from potential floods from the Fraser River and tidal surges from the Pacific Ocean. Of the 13,500 hectares (ha) watershed, 6,300 ha is ...
By Innovyze
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Cotton subsurface drip and overhead irrigation efficiency, maturity, yield, and quality
Subsurface drip (SSD) is used as a water-efficient alternative to overhead irrigation in many crops. This study compared soil water, water use, crop maturity, lint yield, and fiber quality of cotton (Gossypium hirsutum L.) grown with SSD to cotton grown with overhead irrigation. Three experiments were conducted at two Georgia locations in 2004 and 2005. Treatments consisted of overhead irrigated, ...
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New Caledonia Irrigation System Stage 1 - Case Study
Project Details Construction Date September 2014 Location New Caledonia Categories: Pump System, Pipeline, Irrigation System Project Description Supply and install RM Irrigation low pressure irrigation system used for the irrigation of various vegetable crops. IRRIGATION PRODUCTS RM Irrigation hard hose travelling irrigator RM Irrigation Falcon low pressure boom. ...
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New Caledonia Irrigation System Stage 2 - Case Study
Project Details Construction Date May 2015 Location New Caledonia Categories: Pump System, Pipeline, Irrigation System Project Description Supply and install two Reinke Centre Pivot irrigation systems used for the irrigation of various vegetable crops. IRRIGATION PRODUCTS High performance mobile diesel pump set capable of supplying water to both pivots simultaneously ...
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Effects of wastewater irrigation on soil properties and turfgrass growth
Reuse of treated wastewater for turf irrigation is often viewed as one way to maximize existing urban water resources. The aim of this study is to evaluate the applicability of treated wastewater for turfgrass and assess the effects of continuous use of treated water on the soil and crop. Two turfgrass plots irrigated with drinking water and treated wastewater were monitored over a two-year ...
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A farm irrigation pond contaminated with diesel case study
Due to a broken supply line a Yorkshire farm had a diesel oil spillage of approximately 1300 litres which contaminated the adjacent soil and the farm irrigation lagoon. Scientific Environmental Technologies (SET) were commissioned by the loss adjusters to bioremediate the contaminated site. SET chose Amnite P100 hydrocarbon degrading bacteria as the biological agent to break down the diesel ...
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Soil Water Sensors for Agriculture – Theory and Issues
Soil water sensors have been used for irrigation and water management in agriculture for many years, but with limited success in many cases. Nonetheless, the use of soil water sensors in increasing as water scarcity increases and, conversely, problems associated with over irrigation also increase. Common problems with soil water sensing included sensor failure, problems with wiring, lack of or ...
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Characterization of bacterial pathogens in rural and urban irrigation water
The study aimed to compare the bacteriological quality of an urban and rural irrigation water source. Bacterial counts, characterization, identification and diversity of aerobic bacteria were determined. Escherichia coli isolated from both sites was subjected to antibiotic susceptibility testing, virulence gene (Stx1/Stx2 and eae) determination and (GTG)5 Rep-PCR fingerprinting. Low mean ...
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Institutional analysis of irrigation management in Haiti: a case study of three farmer managed schemes
In the late 1990s, like many other developing countries, Haiti started a process of devolving responsibilities over irrigation scheme management to water users’ associations. In this paper, a three-step methodology for institutional analysis is applied to investigate the functioning of this new setting in Haiti, using three irrigation schemes managed by farmers as case studies. First, the ...
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