Determination of wheat water productivity in sprinkler and surface irrigation systems (Case Study in Behbahan)

Document Type : Research Paper

Authors

1 Agricultural Engineering Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center

2 Javad Baghani, Scientific Broad Member, Agricultural Engineering Research Institute (AERI), Agricultural Research Education, and Extension Organization (AREEO), Karaj, Iran

3 Fariborz Abbasi, Scientific Broad Member, Agricultural Engineering Research Institute (AERI), Agricultural Research Education, and Extension Organization (AREEO), Karaj, Iran

Abstract

This research was conducted with the aim of field studies to measure direct and farm water consumption of wheat under farm management in a cropping season (2016-2017) in 21 farms in Behbahan. The measured values of the net water requirement were calculated using the Penman-Monteith method (updated national water document) and also compared with the values of the national water document. The application efficiency in all fields varied from 22.7 to 99.7 percent. The average water productivity of wheat water in fields with sprinkler and surface irrigation systems in Behbahan was 0.92 kg/m3.The highest water consumption in the fields under the springs was calculated to be 4626 m3/ha. The results of the comparison of the mean water requirement in the t-test showed that mean of the national document and the updated document had a significant difference of 483.4 and 455.0 mm, respectively. The Pearson correlation coefficients showed that the changes in the volume of water consumed had significant changes at 1% level and not related to the trend of changes in application efficiency and water use productivity. Also, increase of consumed water in studied fields resulted in decreasing water productivity.

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Main Subjects

References

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Iranian Journal of Soil and Water Research
Volume 49, Issue 4
July and August 2018
Pages 821-830

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