نتایج جستجو برای: agricultural water

تعداد نتایج: 635409  

2010
Kenneth Strzepek Brent Boehlert

Although the global agricultural system will need to provide more food for a growing and wealthier population in decades to come, increasing demands for water and potential impacts of climate change pose threats to food systems. We review the primary threats to agricultural water availability, and model the potential effects of increases in municipal and industrial (M&I) water demands, environm...

Journal: :Journal of Contemporary Water Research & Education 2018

Journal: :international journal of agricultural management and development 2013
gholamreza zamanian mehdi jafari shahram saeedian

the scarcity of water resources and supply resources limitation, have caused an increasing gap between water supply and demand specially in recent decades in almost all regions of the globe. one of the best known solutions proposed by the economists is using the different water pricing approaches thereby obtaining the optimal allocation and social justice. to this purpose, this paper uses the p...

2011
Ke Zhao

Climate change has profound consequences for the agriculture of south-eastern Australia and its climate-induced water shortage in the Murray-Darling Basin. Post Keynesian Economics (PKE) macro-dynamics, along with Kaleckian investment and growth theory, are used to develop an ecological-economic system dynamics model of this complex nonlinear river basin system. The MurrayDarling Basin Simulati...

Journal: :The Science of the total environment 2016
Raymond M Flynn Jenny Deakin Marie Archbold Hugh Cushnan Kate Kilroy Vincent O'Flaherty Bruce D Misstear

Diverse land use activities can elevate risk of microbiological contamination entering stream headwaters. Spatially distributed water quality monitoring carried out across a 17 km(2) agricultural catchment aimed to characterize microbiological contamination reaching surface water and investigate whether winter agricultural land use restrictions proved effective in addressing water quality degra...

2007
L. Ma L. R. Ahuja R. W. Malone

Quantitative system approaches, provided by process‐based models of agricultural systems, are essential for optimizing the use of increasingly limited water and soil resources, guiding tactical management, and addressing the environmental concerns and global issues of the 21st century. Agricultural engineers have made significant contributions in the past to model development and applications i...

2014
Desalegn Tadele

Allelopathic potential of aqueous extracts of lantana (Lantana camara L.) leaf on germination and growth of three agricultural crops: Maize, Finger millet and Tef, commonly cultivated in Ethiopia were studied under laboratory condition. The aqueous extracts were assayed at 5, 10, 25, 50 and 75% and their allelopathic effects were compared with distilled water (control). All the aqueous extracts...

Journal: :مدیریت شهری 0
roohalah bayat elham sadeghian

on one hand, iran due to the low annual rainfall and lack of appropriate spatial and temporal distribution in precipitation is considered as an arid and semi-arid country experiencing stress and water scarcity; on the other hand, 90% of annual water consumption has been allocated to agriculture sector in iran and efficiency and productivity of water consumption do not enjoy favorable status in ...

2016
Daeha Kim Jagath J. Kaluarachchi Mark R. McLellan

Agricultural Water Management in the Sevier River Basin, Utah: A Multidisciplinary Approach

2009
Jeroen H. J. Ensink Christopher A. Scott Simon Brooker Sandy Cairncross

The disposal of untreated urban sewage in to open water bodies is common in most developing countries. This poses potential negative consequences to public health and agricultural sustainability. Hyderabad, one of India’s largest cities, disposes large amounts of its wastewater untreated into the Musi River, from where it is used, with the aid of irrigation weirs, for agricultural production. T...

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