نتایج جستجو برای: irrigation water demand

تعداد نتایج: 713029  

2009
Tarek Rabbani Simon Munier David Dorchies Pierre-Olivier Malaterre Alexandre Bayen Xavier Litrico

With a population of more than six billion people, food production from agriculture must be raised to meet increasing demand. While irrigated agriculture provides 40% of the total food production, it represents 80% of the freshwater consumption worldwide. In summer and drought conditions, efficient management of scarce water resources becomes crucial. The majority of irrigation canals are manag...

Journal: :Proceedings of the International Association of Hydrological Sciences 2015

2011
Yushiou Tsai Sara Cohen Richard M Vogel

We assessed impacts on water use achieved by implementation of controlled experiments relating to four water conservation strategies in four towns within the Ipswich watershed in Massachusetts. The strategies included (1) installation of weather-sensitive irrigation controller switches (WSICS) in residences and municipal athletic fields; (2) installation of rainwater harvesting systems in resid...

2013
Fatemeh Panahi

One well cited ascertain in the literature is that, irrigation water is important for the productivity of a society and the livelihood of its members. The primary objective in coming years will be to balance water supply and demand among users to ensure adequate water for agriculture and sustainable irrigation system management while satisfying other needs. The methodology used in this study in...

ژورنال: علوم آب و خاک 2015
قیصری, مهدی, لندی, اسماعیل, مجیدی, محمد مهدی, مصطفی‌زاده فرد, بهروز, مولائی, بهناز,

Because of limiting water resources and increasing demand for food, it is necessary to investigate the effect of irrigation systems on water productivity. This research was conducted to evaluate yield and yield characteristics of two potato varieties under sprinkler and trickle irrigation systems. The treatments were two irrigation systems (sprinkler and trickle irrigation) and two potato varie...

2004
F Olivier A Singels

Effective irrigation scheduling is a prerequisite to optimising the use of expensive irrigation water for sugarcane production in South Africa. Accurate irrigation scheduling is not widely practised in the sugar industry despite the many scheduling tools available to sugarcane growers. This leads to very low water use efficiencies (WUE) of approximately 50% of what could be achieved theoretical...

Journal: :Journal of Agricultural and Applied Economics 1973

2003
WALID A. ABDERRAHMAN W. A. Abderrahman

Most of Saudi Arabia is arid and water resources are limited; it has experienced extensive and rapid developments in industrial, agricultural, domestic and construction sectors during the last two decades. Saudi Arabia follows the sacred principles of the Islamic law ‘Shari’a’, whereby water is considered the common entitlement of all people, and the main component of the sustainability of the ...

Journal: :پژوهش آب در کشاورزی 0
فاطمه کاراندیش استادیار گروه مهندسی آب دانشگاه زابل. ام البنی توراج زاده دانش آموخته ی کارشناسی ارشد آبیاری و زهکشی گروه مهندسی آب دانشگاه زابل.

population growth as well as global fresh water shortage problem have necessitated the use of unconventional water resources in agricultural sector, as the largest consumer of fresh water, especially in arid and semi-arid regions. in this study, the effect of four irrigation methods on yield, uptake of water and important nutrients, and the salt accumulation in soil was investigated using a com...

2005
Magayane Machibya Makarius Mdemu

Water management and competition between users in water scarce river basins is a major challenge facing the human race. The inter dependence of users in such basins, necessitates a clear understanding of each user in relation to the location, the water demand, and the duration of water need. The understanding of these factors, together, is very important for the management of water resources in...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید