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Irrigation Modeling Articles & Analysis
50 articles found
Plants in greenhouses require a consistent and precisely balanced supply of nutrients through irrigation. However, old pump models or manual dosing methods are quick to show their limitations. ...
Precision Irrigation: By providing real-time data on soil moisture levels, farmers can precisely tailor irrigation schedules to the specific needs of their crops. ...
Client: Grand River Conservation Authority, 400 Clyde Road, Cambridge Ontario Contact: Stephanie Shifflett, M.Sc., P. Eng.; Water Resources Engineer Key Personnel: E.J. Wexler, S. Malott, D. Kassenaar The Whitemans Creek subwatershed is located in southwestern Ontario immediately south of the Region of Waterloo (left). The subwatershed drains an area of approximately 400 km² and ...
After the testing period, the Fluence small, containerized MABR will be qualified to treat wastewater to reuse quality, providing a source for irrigation and aquifer recharging. The decentralized model could prove useful for desalination, as well. ...
The main goal of this study is to investigate impacts of potential future climate change on citrus irrigation requirements (IRR) in major global citrus producing regions, e.g., Africa, Asia, Australia, Mediterranean, Americas. The Irrigation Management System (IManSys) model was used to calculate optimum IRR for the baseline period (1986–2005) ...
These models incorporated the drainage and irrigation channel improvements, a reversible drainage discharge and irrigation intake pump station with salinity controls, 2 irrigation lift stations, 4 automated water‐level control gates, and several minor semi‐automatic or manual control structures. ...
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In this study, a non-linear optimization model was used to calculate the maximum WP in the Qazvin plain irrigation network. The proposed model was applied to six different water supply scenarios including 100% and 90%, 80%, 70%, 60%, and 50% of full irrigation volume. ...
The motivation of this study is to provide a better understanding of how reducing irrigation subsidies impacts farming sectors and rural households. We apply a Computable General Equilibrium model to simulate the irrigation water and irrigation subsidy in 16 provinces. The results show that reducing irrigation ...
Estimating water requirements of plants cultivated in greenhouse environments is crucial, both for the design of greenhouse irrigation systems and the improvement of irrigation scheduling. Spinach is one of the main vegetables sold as ‘ready-to-eat’ bagged produce; it is very sensitive to water stress and thus requires accurate irrigation. In ...
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 ...
One of the main problems in water management of irrigation systems is the control of the equitable distribution of water among different orifice offtakes. ...
The improved Wageningen Lowland Runoff Simulator (WALRUS) model incorporates an irrigation and drainage scheme, and a new stage–discharge relationship to account for hydrological processes in multi-land-use polder with paddy fields and pumping stations. Here, this model was applied to assess how climate and land use changes affected the runoff of ...
Soil water sensors have been used for irrigation and water management in agriculture for many years, but with limited success in many cases. ...
We measure the Chinese drought of 2000 based on a static computable general equilibrium model of China's macroeconomy, which describes the relationships between drought, agricultural production, and rural households' welfare from an economic perspective. In the model, the irrigation water inputs of the 16 regions of China are estimated and ...
Drip irrigation is far more water-efficient than many other irrigation methods including flood irrigation and spray irrigation. ...
The impact of potential future climate change scenarios on the irrigation water requirements (IRRs) of two major agricultural crops (coffee and seed corn) in Hawai'i was studied using the Irrigation Management System (IManSys) model. In addition to IRRs calculations, IManSys calculates runoff, deep percolation, canopy interception, and ...
Water, one of the most crucial inputs of irrigation, should be utilized judiciously to identify appropriate strategies for planning and management of irrigated farmland. The present study was conducted for the crop maize (Zea mays), grown mainly in the rabi-season (July–October), to evaluate the irrigation water requirements in the temperate region of Kashmir Valley, India during the ...
In planting rice, a significant amount of irrigation water is required to prepare the farmlands and do transplanting and this is directly related to the number of machines and workers available; that is, the more the length of plowing and transplanting process due to the lack of required machinery and labor, the more the water volume consumed. ...
This paper focuses on the role of green roofs (GR), rainwater harvesting (RWH) and greywater reuse and their integration at the building level. A number of models were developed to simulate these systems, and provide design curves able to simultaneously minimise both total runoff volumes and the amount of potable water used in the building (for irrigation and ...
Considerable amounts of water can be saved by automating irrigation canals. The design of most of the practical automatic controllers rely on a simplified model of the irrigation canal. This model can be obtained from measured data (identification) or can be formulated (white box models) assuming ...