نتایج جستجو برای: irrigation water demand

تعداد نتایج: 713029  

Journal: :International journal of environmental health research 2015
Kenan Okurut Robinah Nakawunde Kulabako Jonathan Chenoweth Katrina Charles

Sanitation improvement is crucial in saving lives that are lost due to water contamination. Progress towards achieving full sanitation coverage is still slow in low-income informal settlements in most developing countries. Furthermore, resources are being wasted on installing facilities that are later misused or never used because they do not meet the local demand. Understanding demand for impr...

2008
Ge Sun Steven G. McNulty Jennifer A. Moore Erika C. Cohen

Assessment of long-term impacts of projected changes in climate, population, and land use and land cover on regional water resource is critical to the sustainable development of the southeastern United States. The objective of this study was to fully budget annual water availability for water supply (precipitation ) evapotranspiration + groundwater supply + return flow) and demand from commerci...

2017
Xuemin Li Zailin Huo Bing Xu

At present, the shortage of water resources has become a serious constraint to the further development of social economy. The optimal allocation of multi-water resources is valuable for agricultural water management in arid and semi-arid regions. However, traditional deterministic programming does not solve the complex water resources allocation in irrigation systems. Furthermore, previous allo...

2013
Hridkamol Biswas Faisal Hossain Nasima Tanveer Chowdhury Richard G. Taylor Kazi M. Ahmed Anwar Zahid

The main purpose of this study is to give support irrigation in dry season and reduce the gap between electric power demand and generation by using renewable energy source solar pump. Every year water level is going down 2m/year. As a result scarcity of ground water is increasing, which has a harmful effect on economy. On the other side, electric power demand is growing up for commercial, indus...

Journal: :Journal of environmental management 2009
Ina Gruber Julia Kloos Marion Schopp

This paper describes and analyzes agricultural water demands for Benin, West Africa. Official statistical data regarding water quantities as well as knowledge on factors influencing the demand for water are extremely rare and often reveal national trends without considering regional or local differences. Thus policy makers usually work with this estimated and aggregated data, which make it very...

2017
Shibiao Fang Renfu Jia Wenrong Tu Zhilin Sun

Changes in irrigation water-use efficiency are related closely to agricultural development. Clarifying the driving factors of irrigation water-use efficiency change at different agricultural development stages is beneficial for buffering the contradiction between the protection of water resources and massive agricultural water consumption. It also has theoretical and application value when it c...

2011
Dimitra A. Loka Derrick M. Oosterhuis Glen L. Ritchie

Water deficit is the major abiotic factor limiting plant growth and crop productivity around the world (Kramer, 1983). Approximately one third of the cultivated area of the world suffers from chronically inadequate supplies of water (Massacci et al., 2008). In all agricultural regions, yields of rain-fed crops are periodically reduced by drought (Kramer, 1983), and the severity of the problem m...

2016
Kerstin Damerau Anthony G. Patt Oscar P.R. van Vliet

The sufficient supply of food and energy requires large amounts of fresh water. Mainly required for irrigation, but also processing and cooling purposes, water is one of the essential resources in both sectors. Rising global population numbers and economic development could likely cause an increase in natural resource demand over the coming decades, while at the same time climate change might l...

2006

ncutron probe use in the Lowveld is repor-ted. This assessAs part of a watcr management project initiated by the Zimbabwe Sugar Association Experiment Station (ZSAES), three large sugar estates and the ZSAES have imported a commercially available irrigation scheduling package which is based on neutron probe measurements of soil water. Analysis of selected data collected using the package highli...

2010
Mohamed A. M. Ibrahim T. K. Emara

Surface irrigation is the dominant method of on-farm irrigation in Egypt as well as world wide. Furrow watering is considered as one of the main types of surface irrigation. Most of the cultivated crops are grown under such type of watering. The principal advantage of furrow irrigation is the less irrigated area comparing with that under basin irrigation which equaled total cultivated acreage. ...

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