Volume 14, Issue 52 (sumer 2010)
jwss 2010, 14(52): 1-14 |
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Sarai Tabrizi M, Babazadeh H, Parsinejad M, Modares Sanavi S. Improving Soybean Water Use Efficiency Using Partial Root Drying. jwss 2010; 14 (52) :1-14
URL: http://jstnar.iut.ac.ir/article-1-1219-en.html
URL: http://jstnar.iut.ac.ir/article-1-1219-en.html
, mahdisarai@yahoo.com
Abstract: (46565 Views)
Deficit irrigation is one of the irrigation management methods that is used to increase Water Use Efficiency. Considering the internal plant adaptability characteristic to water shortage, Partial Root Drying method has been introduced in recent years. In this field research improvement of Water Use Efficiency for Soybean was determined. This experiment which was conducted at four furrow irrigation treatments at the Research Field of Tehran University in Karaj in 2008, consists of full irrigation (100% soil moisture deficit compensation), conventional deficit irrigation at 50 and 75 percent soil moisture deficit compensation and Partial Root Drying at 50 percent soil moisture deficit compensation with three replications. The amounts of irrigation used were exactly compensation level (negligible loss). Results indicated that Water Use Efficiency according to Duncan's Multiple Range Test at the five percent level of probability there was a significant difference between partial root drying treatment (PRD50%) and conventional deficit irrigation treatment at fifty percent soil moisture deficit compensation (DI50%),. Water Use Efficiency in PRD50% compared with DI50%, DI75% and full irrigation increased by 48.3%, 61.9% and 70.1% respectively.
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