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Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES   2003 , Volume 17 , Number 1; Page(s) 97 To 105.
 
Paper: 

WATER USE EFFICIENRY OF WHEAT, BARLEY, COTTON AND SUNFLOWER WITH RESPECT TO WATER QUALITY

 
 
Author(s):  FEIZI M.*
 
* Member of scientific Board at Isfahan Agric. Res. Center. p.o.
 
Abstract: 
Iran is located in an arid and semi-arid region of the world and its annual average rainfall is one-third of the world rainfall. Too little rainfall and long lasting drought during recent years have intensified the problems caused by water shortage and salinity of water resources. In such situations, saline and moderately saline waters can be used by considering proper management strategies to obtain optimum yields. In this paper, a series of studies on methods of using saline water such as substitution of crops, using proper leaching, alternate use of saline and fresh water and use of saline water after seed germination and plant establishment will be presented. The crops under study were wheat, barley, cotton and sunflower. The water use efficiencies with respect to water qualities and specific management practices were measured. The results showed that maximum water use efficiency with respect to the amount of fresh water used in the treatments was obtained by using 28 percent of total water used as fresh water in barley, 14 germination and establishment stage. In this case, the remaining water requirements of the crops were met with saline and slightly saline waters. Intermittent use of fresh and saline or slightly saline waters also produced high water use efficiencies, and in the meantime saved about 50 percent of the fresh water, which can be used to increase the cultivation of salt sensitive crops with high economic returns.
 
Keyword(s): WATER USE EFFICIENCY, WHEAT, BARLEY, COTTON, SUNFLOWER, SALINE WATER
 
References: 
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