irrigation scaling Articles
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Different Asias, same problems: negotiating the state-user interface in surface irrigation in China and India
This paper explores the dynamic interface of state-water users' relationships in large-scale surface irrigation in India and China, to inquire to what extent the issues encountered in large-scale irrigation management and governance are independent of regime characteristics. Though operating in very different overall political regimes, China and India exhibit strong similarities in the way a ...
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Morocco: Irrigation water pricing policy of large scale irrigation projects
In Morocco, the consequence of increased industrialization and a rapidly growing population accentuated by a progressive shift from rural to urban living. This resulted in the growth of requirements for the quality and quantity of water resources, their more intensive and comprehensive use. The government policy in the agricultural sector has always favored investments in the irrigation ...
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Impacts of climate change on irrigation water requirements for rice–wheat cultivation in Bagmati River Basin, Nepal
This study highlights the spatial and temporal impacts of climate change on rice–wheat cropping systems, focusing on irrigation water requirement (IWR) in the Bagmati River Basin of Nepal. The outputs from a general circulation model (HadCM3) for two selected scenarios (A2 and B2) of IPCC and for three time periods (2020s, 2050s, and 2080s) have been downscaled and compared to a baseline ...
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The effect of rigid scheduling on productivity and water-use of potatoes (Solanum tuberosum L.) grown under small-scale irrigation
This paper evaluates the results of a study highlighting the effect of rigid scheduling on crop water use and soil water extraction patterns, crop coefficients, crop response functions and water-use efficiency (WUE). The cumulative Penman potential evapotranspiration (Etp) at the end of the season reached around 400 mm and the total depth of water applied between planting and harvest through ...
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AquaCrop model simulation under different irrigation water and nitrogen strategies
On a global scale, irrigated agriculture consumes about 72% of available freshwater resources. Deficit irrigation can be applied in the field to save irrigation water and still lead to acceptable crop production. The AquaCrop model is a simulation model for management of irrigation and nitrogen fertilizer. This model is a new model that is accurate, robust and requires fewer data inputs ...
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Hope for Senegal’s blacklisted Ramsar site
June is the end of the hot and dry season in Senegal. More auspiciously, it is peak mango season. As I drove north from the capital of Dakar with a team from the Wetlands International Africa office, mango sellers blanketed the roadside selling the best mangoes I’d ever tasted. On my journey to Senegal’s Ndiaël Avifauna Special Reserve, a former floodplain with wetlands of ...
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Sustainable Management of Large Scale Irrigation Systems: A Decision Support Model for Gediz Basin, Turkey
While water on a global scale is plentiful, 97% of it is saline and 2.25% is trapped in glaciers and ice, leaving only 0.75% available in freshwater aquifers, rivers and lakes. About 70% of this fresh water is used for agricultural production, 22% for industrial purposes and 8% for domestic purposes. Increasing competition for water for domestic and industrial purposes is likely to reduce the ...
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Crops flourish with Scalewatcher
Water is an essential component of horticulture and agriculture whether it is used for irrigating field-scale vegetables, nursery stock, flowers or fruit. Where water contains high degrees of calcium, magnesium and sodium, it can cause nutrient deficiency in plants and crops resulting in stunted growth and poor yields. Calcium also blocks irrigation systems and boilers in heated greenhouses, ...
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Irrigated Corn: A Game-Changer for Small-Scale Farmers
Irrigated corn has been a game-changer for small-scale farmers worldwide, and it’s no surprise why. The ability to consistently grow healthy, high-yield crops has become increasingly important as global food demand continues to rise. With irrigation techniques allowing farmers to provide their crops with consistent and carefully measured amounts of water and nutrients, it’s no wonder ...
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Quantification of soil surface evaporation under micro-scale advection in drip-irrigated fields
The objective of this study is to quantify soil surface evaporation under micro-scale advection in drip-irrigated fields. A numerical model for estimating soil surface evaporation under micro-scale advection, assuming drip-irrigated fields, is introduced. Results indicate that the soil surface evaporation changes spatially. Soil surface evaporation at the upwind edge of wet soil portions adjacent ...
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Large-scale irrigation - Understanding energy-water-food connections
Original story at MIT News An MIT team is providing new understanding of the growing interconnections among three critical resources: energy, water and food. The work focuses on Pakistan's Indus Basin, where irrigation water is increasingly pumped from underground, a practice that is intensifying a preexisting shortage of energy. Using new and existing data plus statistical models, the ...
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Understanding irrigation water use efficiency at different scales for better policy reform: a case study of the Murray-Darling Basin, Australia
This paper examines water use efficiency and economic efficiency with a particular focus on the Murray-Darling Basin of Australia and the stated policy goal of increasing environmental flows of water in the Basin. The different measures of efficiency are explained, and their implications for water reform and the efficacy of market based approaches to addressing the water scarcity issues and ...
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Why Drip Irrigation Design is Crucial to Your Success
Drip irrigation is one of the most cost-effective and efficient watering methods in agriculture. It has become incredibly popular in the past 50-years and has been widely adopted by agriculturalists in dozens of countries throughout the world. In simple term, drip irrigation works by sending water through plastic pipes into drip emitters. These emitters are specifically designed to release water ...
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Site-Specific WaterBit MicroBlock Valve™ Irrigation for Orchards and Vineyards Opens Up Exciting Opportunities
Sebastian Braum, Ph.D., is WaterBit’s director of soil science and agronomy. He is writing a series of posts for our blog that delve into irrigation-related topics. In the piece below, he discusses deficit irrigation in wine grapes. Dr. Braum holds a doctorate in soil chemistry from the University of Wisconsin-Madison and he studied soil science, plant nutrition, agronomy and viticulture at ...
By Farm(x)
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Subsurface drip irrigation; the future of Irrigation is Underground
Placing water beneath the soil surface via buried lines is slowly becoming the "preferred choice" of many vineyard irrigators. The reasons are many, including the absence of surface evaporation, as well as reduced weed growth, herbicide washout, maintenance, injury, and vandalism found with using conventional water application systems. The advantages of subsurface drip add to reduced cost for ...
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