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Paper Information

Journal:   JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)   JULY-AUGUST 2014 , Volume 28 , Number 3; Page(s) 513 To 522.
 
Paper: 

ANALYSIS OF EVALUATION INDICATORS USING OPPORTUNITY TIME IN FURROW IRRIGATION

 
 
Author(s):  LALEHZARI R.*, ANSARI SAMANI F., BOROOMAND NASAB S.
 
* YOUNG RESEARCHERS CLUB, KHOUZESTAN SCIENCE AND RESEARCH BRANCH, ISLAMIC AZAD UNIVERSITY, AHVAZ, IRAN
 
Abstract: 

Evaluation procedures have been developed for effective design and management of irrigation systems.
Furrow irrigation is one of the main types of applying water in field. In the present study, a new procedure for field evaluation of water distribution in furrow irrigation is proposed. For this purpose, application efficiency (Ea), water requirement efficiency (Er), deep percolation (DP) and tail water ratio (TWR) have been introduced based on the average of the non-dimensional infiltrated depth values. The relationships between coefficient of uniformity (CU) and distribution uniformity (DU) have been described by opportunity time values of each quarter and using the linear equation instead of infiltration function. The proposed method was compared to other procedures by 9 scenarios of field data with different discharges and lengths. The results show that the evaluation indicators of furrow irrigation is calculated with non-dimensional parameters depend on opportunity time and new coefficients of linear infiltration equation. Also, there was no observed any significant difference on the suggested indices values and classical performance indicators.

 
Keyword(s): FURROW IRRIGATION, APPLICATION EFFICIENCY, UNIFORMITY, DISTRIBUTION
 
References: 
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