scholarly journals Forecasting Irrigation Water Demand: A Case Study on the Flint River Basin in Georgia

2007 ◽  
Vol 39 (3) ◽  
pp. 641-655 ◽  
Author(s):  
Swagata “Ban” Banerjee ◽  
Irfan Y. Tareen ◽  
Lewell F. Gunter ◽  
Jimmy Bramblett ◽  
Michael E. Wetzstein
Keyword(s):  
Water Supply ◽  
Irrigation Water ◽  
Water Demand ◽  
Econometric Model ◽  
Econometric Models ◽  
Irrigation Water Demand ◽  
Drought Conditions ◽  
The Face ◽  
Flint River

Southeast drought conditions have accentuated the demand for irrigation in the face of restricted water supply. For allocating this supply, Georgia held an auction for withdrawing irrigated acreage. This auction withdrew 33,000 acres from irrigation, resulting in a physical estimate of a 399 acre-feet daily increase in water flow. The actual reduction is driven by crop distributional changes on the basis of economic substitution and expansion effects. In contrast to the physical estimates, an econometric model that considers these effects is developed. The differences between the physical and econometric models result in an increase in the estimate of water savings of around 19% to 24%.

ИСПОЛЬЗОВАНИЕ ВОДНЫХ РЕСУРСОВ БАССЕЙНА Р. КУБАНЬ ДЛЯ ОРОШЕНИЯ СЕЛЬСКОХОЗЯЙСТВЕННЫХ ЗЕМЕЛЬ

2020 ◽  
pp. 6
Author(s):  
E.V. Fedotova
Keyword(s):  
Water Supply ◽  
Water Use ◽  
Irrigation Water ◽  
Water Demand ◽  
Water Sources ◽  
Climatic Conditions ◽  
Agricultural Crops ◽  
Irrigation Water Demand ◽  
Pumping Stations ◽  
The Republic

В данной статье приведен перечень водоисточников каналов и насосных станций, плановые показатели забора воды и водоподачи в Карачаево-Черкесской республике, Республике Адыгее и Краснодарском крае. Рассмотрены значения водопотребности для орошения сельскохозяйственных культур для природно-климатических условий Краснодарского края, Республики Адыгея, Республики Карачаево-Черкессия. Проанализированы показатели плана водопользования и поливов сельскохозяйственных культур на орошаемых землях.This article provides channels water sources and pumping stations list, planned water intake and water supply indicators in the Karachay-Cherkess Republic, the Republic of Adygea and the Krasnodar territory. Considered the values of agricultural crops irrigation water demand for natural and climatic conditions of the Krasnodar territory, the Republic of Adygea, the Republic of Karachay-Cherkess. Analyzed the water use and irrigation plan indicators of the agricultural crops on irrigated lands.

Energy Management for Photovoltaic Irrigation with a Battery Bank

2015 ◽  
Vol 4 (3) ◽  
pp. 18-32 ◽  
Author(s):  
Imene Yahyaoui ◽  
Maher Chaabene ◽  
Fernando Tadeo
Keyword(s):  
Energy Management ◽  
Irrigation Water ◽  
Water Demand ◽  
Irrigation System ◽  
Energy Management System ◽  
Photovoltaic Panels ◽  
Irrigation Water Demand ◽  
Battery Bank ◽  
Ac Converters

A proposal for energy management in an off-grid photovoltaic pumping and irrigation system is presented and evaluated for a specific case study. The system is assumed to be based on off-the-shelf components (photovoltaic panels, battery banks, DC/AC converters, relays, submergible pumps, etc.), with a microcontroller-based energy management system, deciding when to disconnect the load from the photovoltaic panels or the battery, or the battery from the photovoltaic panels. The aim is to reduce the battery bank us, but always fulfilling the irrigation demand. Using a specific case study (for tomatoes irrigation in Tunisia), the proposal is evaluated, showing that it fulfills the irrigation water demand, using the batteries only when really needed.

scholarly journals An Innovative Fog Catcher System Applied in the Andean Communities of Ecuador

2017 ◽  
Vol 60 (6) ◽  
pp. 1917-1923
Author(s):  
David V. Carrera-Villacrés ◽  
Iveth Carolina Robalino ◽  
Fabian F. Rodríguez ◽  
Washington R. Sandoval ◽  
Deysi L. Hidalgo ◽  
...  
Keyword(s):  
Sea Level ◽  
Water Deficit ◽  
Irrigation Water ◽  
Water Demand ◽  
Agricultural Production ◽  
Water Deficits ◽  
Irrigation Water Demand ◽  
The World ◽  
Precipitation Water ◽  
Local Water

Abstract. Fog catchers have been successfully applied in several countries around the world. In Ecuador, the Galte communities in the Andean region suffer from water deficits because they are located at an altitude higher than 3500 m above sea level. Rainfall in the area is relatively low, about 600 mm per year, with high evapotranspiration of approximately 615.74 mm per year. This study aimed to install fog catchers in Galte in 2014 and 2015 to help meet the communities’ water needs. The fog catcher system was designed to satisfy the irrigation water demand for local agricultural production, mainly maize, based on estimates using the Blaney-Criddle method. Every day throughout the year, each fog catcher collected 5 to 20 L of water per m2 of catcher area. The results indicate that the fog catcher system can meet about 5% of the local water demand for agricultural production. Keywords: Ecuador, Evaporation, Evapotranspiration, Precipitation, Water deficit.

scholarly journals Quantifying the Impacts of Compound Extremes on Agriculture and Irrigation Water Demand

2020 ◽  
Author(s):  
Iman Haqiqi ◽  
Danielle S. Grogan ◽  
Thomas W. Hertel ◽  
Wolfram Schlenker
Keyword(s):  
Heat Stress ◽  
Water Stress ◽  
Irrigation Water ◽  
Water Demand ◽  
Crop Production ◽  
Crop Yields ◽  
Fold Increase ◽  
The United States ◽  
Food Prices ◽  
Irrigation Water Demand

Abstract. Agricultural production and food prices are affected by hydroclimatic extremes. There has been a large literature measuring the impacts of individual extreme events (heat stress or water stress) on agricultural and human systems. Yet, we lack a comprehensive understanding of the significance and the magnitude of the impacts of compound extremes. Here, we combine a high-resolution weather product with fine-scale outputs of a hydrological model to construct functional indicators of compound hydroclimatic extremes for agriculture. Then, we measure the impacts of individual and compound extremes on crop yields focusing on the United States during the 1981–2015 period. Supported by statistical evidence, we confirm that wet heat is more damaging than dry heat for crops. We show that the average damage from heat stress has been up to four times more severe when combined with water stress; and the value of water experiences a four-fold increase on hot days. In a robust framework with only a few parameters of compound extremes, this paper also improves our understanding of the conditional marginal value (or damage) of water in crop production. This value is critically important for irrigation water demand and farmer decision-making – particularly in the context of supplemental irrigation and sub-surface drainage.

scholarly journals Potential for sustainable irrigation expansion in a 3 °C warmer climate

2020 ◽  
Vol 117 (47) ◽  
pp. 29526-29534
Author(s):  
Lorenzo Rosa ◽  
Davide Danilo Chiarelli ◽  
Matteo Sangiorgio ◽  
Areidy Aracely Beltran-Peña ◽  
Maria Cristina Rulli ◽  
...  
Keyword(s):  
Climate Change ◽  
Irrigation Water ◽  
Water Demand ◽  
Crop Production ◽  
Cropping Systems ◽  
Water Storage ◽  
Future Research ◽  
Irrigation Water Demand ◽  
Starting Point ◽  
Sustainable Irrigation

Climate change is expected to affect crop production worldwide, particularly in rain-fed agricultural regions. It is still unknown how irrigation water needs will change in a warmer planet and where freshwater will be locally available to expand irrigation without depleting freshwater resources. Here, we identify the rain-fed cropping systems that hold the greatest potential for investment in irrigation expansion because water will likely be available to suffice irrigation water demand. Using projections of renewable water availability and irrigation water demand under warming scenarios, we identify target regions where irrigation expansion may sustain crop production under climate change. Our results also show that global rain-fed croplands hold significant potential for sustainable irrigation expansion and that different irrigation strategies have different irrigation expansion potentials. Under a 3 °C warming, we find that a soft-path irrigation expansion with small monthly water storage and deficit irrigation has the potential to expand irrigated land by 70 million hectares and feed 300 million more people globally. We also find that a hard-path irrigation expansion with large annual water storage can sustainably expand irrigation up to 350 million hectares, while producing food for 1.4 billion more people globally. By identifying where irrigation can be expanded under a warmer climate, this work may serve as a starting point for investigating socioeconomic factors of irrigation expansion and may guide future research and resources toward those agricultural communities and water management institutions that will most need to adapt to climate change.

scholarly journals Estimation of Irrigation Water Demand for Barley in Iran: The panel Data Evidence

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Ahmad Sadeghi ◽  
Mohd Ghazali B Mohayidin ◽  
Md. Ariff Bin Hussein ◽  
Jalal Attari
Keyword(s):  
Panel Data ◽  
Irrigation Water ◽  
Water Demand ◽  
Irrigation Water Demand
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