نتایج جستجو برای: surface irrigation

تعداد نتایج: 674377  

Journal: :international journal of advanced biological and biomedical research 2013
iman saleh masoud masoudi jahanshah saleh khabat khosravi

current study was carried out with aim to evaluate the effect of pressurized irrigation methods and furrow irrigation method with municipal effluent on distribution of salinity and moisture in the soil profile. the experimental study was designed by split plot layout with three irrigation methods including furrow, surface drip (sd) irrigation and subsurface drip irrigation (ssd) and two water q...

Journal: :تحقیقات مهندسی کشاورزی 0
محمدکاظم شعبانی دانشجوی سابق کارشناسی ارشد تورج هنر استادیاربخش مهندسی آب دانشکده کشاورزی دانشگاه شیراز علیرضا سپاسخواه استاد بخش مهندسی آب دانشکده کشاورزی دانشگاه شیراز

in recognition of the value and limitations of available water resources in agriculture and the occurrence of periodic drought in iran, water conservation and optimal usage of available water is essential. the main objective of this study was to optimize field water management and cropping patterns using deficit irrigation. the effect of reducing water consumption on different growth stages usi...

Journal: Desert 2007
M. Dastorani, M. Heshmati M. Sadeghzadeh

This research was designed to evaluate and compare the applicability of two different types of irrigation including traditionally (surface irrigation) and simple sub-surface drip irrigation (using pricked-pipe covered with plastic cloth). Two plots containing 39 pistachio trees with 720 m2 area were selected in Rafsanjan, Iran. Both plots were irrigated using exactly the same quantity and quali...

Journal: :desert 2008
m. dastorani m. heshmati m. a. sadeghzadeh

this research was designed to evaluate and compare the applicability of two different types of irrigation including traditionally (surface irrigation) and simple sub-surface drip irrigation (using pricked-pipe covered with plastic cloth). two plots containing 39 pistachio trees with 720 m2 area were selected in rafsanjan, iran. both plots were irrigated using exactly the same quantity and quali...

2017
Pete W. Jacoby Xiaochi Ma Jeremy R. Thompson

During 2015, vines receiving season-long drip irrigation delivered into the lower root zone via hard plastic tubes yielded 70 % of commercial production while receiving only 15% of the water as the vines receiving full commercial rates of surface drip irrigation. Vines receiving direct root-zone (DRZ) irrigation at rates reduced to 60, 30, and 15% of commercial drip irrigation (DI) produced ind...

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. ...

2002
S R Raine W R Walker

The adoption of improved surface irrigation design and management practices is inhibited both by a low awareness amongst irrigators of the variables affecting irrigation performance and the difficulty of quantifying the benefits associated with alternative practices. Simulation modelling may be used to address both of these issues. This paper reports on the use of the surface irrigation model S...

Journal: :Ground water 2012
George J Kraft Katherine Clancy David J Mechenich Jessica Haucke

Irrigated agriculture has expanded greatly in the water-rich U.S. northern lake states during the past half century. Source water there is usually obtained from glacial aquifers strongly connected to surface waters, so irrigation has a potential to locally decrease base flows in streams and water levels in aquifers, lakes, and wetlands. During the nascent phase of the irrigation expansion, wate...

2014
Andrew Reid Bell M Azeem Ali Shah Patrick S Ward

It is widely argued that farmers are unwilling to pay adequate fees for surface water irrigation to recover the costs associated with maintenance and improvement of delivery systems. In this paper, we use a discrete choice experiment to study farmer preferences for irrigation characteristics along two branch canals in Punjab Province in eastern Pakistan. We find that farmers are generally willi...

2015
Ali BAGHERZADEH Parisa PAYMARD

Bagherzadeh A., Paymard P. (2015): Assessment of land capability for different irrigation systems by parametric and fuzzy approaches in the Mashhad Plain, northeast Iran. Soil & Water Res., 10: 90–98. Water quality and quantity in agricultural systems of arid and semiarid regions of the world are of great importance. In this regard the trend to pressurized irrigation systems compared to surface...

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