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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10150

Title: Impact of Gel Conditioners and Water Salinity on Intermittent Evaporation
Authors: A. M. Al-Omran
A. M. Al-Darby
M. A. Mustafa
A. A. Shalaby
Issue Date: 1991
Abstract: The effect of gel-forming conditioners and water quality on aggregation, relative swelling and evaporation for calcareous loamy sand soil were investigated. The treatments consisted of two waters: distilled and salt solution with (EC = 42.5 dS/m and SAR = 5.3), and three conditioners (0.1 % Hydrogel, 0 .4% StaWet and 0.4% Jalma). Twenty two mm of water was applied every seven days for each column during 21 days of the experiment. The columns were placed in a walk-in growth chamber with controlled light of 25.7 W/m and constant temperature of 28 C. The aggregation index was significantly increased by 13, 37, and 27 % due to addition of 0.1% Hydrogel, 0.4% StaWet and 0.4% Jalma, respectively. For distilled water, gel conditioners gave relative swelling values about in the range of 3.23 times that of control. Whereas the salt solution, the relative swelling was much lower for these conditioners. For distilled water, the conditioners significantly (p = 0.05) reduced cumulative evaporation. However, for the salt solution all conditioners gave significantly (p = 0.05) higher evaporation values than that of the control during the first and second cycles and there was no significant difference in evaporation during the third cycle.
URI: http://hdl.handle.net/123456789/10150
Appears in Collections:College of Foods And Agricultural Science

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