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Paper Information

Journal:   IRANIAN OF IRRIGATION & WATER ENGINEERING   FALL 2014 , Volume 5 , Number 17; Page(s) 1 To 13.
 
Paper: 

THE EFFECTS OF RAINFALL ON DRYLAND WHEAT YIELD AND WATER REQUIREMENT SATISFACTION INDEX AT DIFFERENT TIME SCALES

 
 
Author(s):  HASHEMINASAB FARIDEH SADAT*, MOUSAVI BAYGI MOHAMMAD, BAKHTIARI BAHRAM, BANNAYAN MOHAMMAD
 
* DEPARTMENT OF WATER ENGINEERING, FACULTY OF AGRICULTURE, FERDOWSI UNIVERSITY OF MASHHAD, MASHHAD, IRAN
 
Abstract: 

Wheat is the world's most important strategic products that are of particular importance in the diet. Wheat in rain fed agriculture is of main pillars so that these parameters can be fed as the only source of water. This study on 6 synoptic Station the provinces of North, Razavi and South Khorasan. In this study are used of 25 years of 6 synoptic stations meteorological data of Khorasan and wheat yield the years 1362 to 1387. First, Evaluation of rainfall data during wheat the growth period and water requirement satisfaction index (WRSI) in the area of precipitation and Evaluation evapotranspiration product. The results of the long-term average of Birjand station 44.72 percentage, that the lowest among the studied stations on the appropriate region of wheat planting is not dryland has been accompanied by high risk. The stations studied the long-term average of Mashhad and Ghochan 92.87 and 92.27% of the highest value of this index are based on these regions are highly suitable for dryland wheat and low risk are important for dryland cultivation of wheat.

 
Keyword(s): PERFORMANCE, FARMING, WATER REQUIREMENT SATISFACTION INDEX, RISK, RAINFALL, KHORASAN
 
References: 
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