Effective factor on irrigation management of orchards equiped to micro irrigation systems (A case study in Golestan province)

Drip irrigation is one of the most advanced techniques to increase water productivity. So this method is gradually replacing the other traditional irrigation methods, especially in arid and semi-arid regions of the world. Along with the quantitative development, monitoring and evaluation of drip irr...

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Bibliographic Details
Main Authors Kiani, Alireza, Sadreghaen, Hossein, Tabarsa, Rahim, Safernezhad, Atiyeh
Format Publication
LanguagePersian
Published Karaj (Iran) Agricultural Engineering Research Institute of Iran – AERI 2014
Subjects
CONCEPTION
DESIGN
DISENO
EFFICACITE
EFFICIENCY
EFICACIA
EQUIPO
IRRIGATION
MATERIEL
RIEGO
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Summary:Drip irrigation is one of the most advanced techniques to increase water productivity. So this method is gradually replacing the other traditional irrigation methods, especially in arid and semi-arid regions of the world. Along with the quantitative development, monitoring and evaluation of drip irrigation system with the aim of improving the system is essential. For this study, 21 samples of implemented drip irrigation systems in different cities of Golestan province have been studied in 2011-12. The evaluation has been performed based on the guideline of Soil Conservation Service (SCS) & American Society of Agriculture and Biological Engineers (ASAE). Measurements in any field were included pressure and discharge of emitters, check the status of the central control, applied water, water quality and talk to farmers about the state of the system strategy. The results showed that average amounts of emission uniformity (EU), statistical uniformity coefficient (Us), efficiency reduction factor (ERF) and coefficient of variation were 79, 90, 85 and 15%, respectively showing that the performance of drip irrigation systems is average. Generally, the most important problems of drip irrigation systems in the province are containing: design and improper implementation, lack of cleaning filters, clogging & improper number of emitters, not-adjustment of inlet valve on manifold, inappropriate pressure and its non-uniform distribution, low wetted area, weakness in operation management by the end users, lack of continuous monitoring during and after implementation and some of the problems caused by natural social event.
Bibliography:44628
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