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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10169

Title: Acryhope as a Highly Swelling Gel-Conditioner Under Sprinkler Infiltration in Sandy Soil.
Authors: Y. Z. El-Shafei
A. M. Al-Darby
A. A. Shalaby
Issue Date: 1995
Abstract: A soil column experiment was carried out to investigate the effect of a cross-linked polyacrylate (Acryhope) on water movement under sprinkler (rain) infiltration in order to establish its potential as a soil conditioner. Five concentrations of Acryhope (C) ranging from 0 to 1 % (on dry weight basis) were uniformly mixed as dry grains in the upper 10 cm layer of sandy soil. Three sprinkler intensities (R) of 3.3, 6.3, and 11.5 cm h-1 were applied by a sprinkler (rain) simulator. The Acryhope particles were swollen upon water absorption causing a volumetric soil expansion which was not influenced by R but was proportional to C. The relative expansion, defined as the increase of height of soil surface divided by the wetting front depth (L), exponentially diminished with time (t) and was dependent on both C and R. The resultant bulk density decreased with increasing C but was independent of R. The early rate of wetting front advance (dL/dt) decreased with either increasing C or decreasing R. The water content at the upper treated layer (u) increased with increase of C or R. The water movement and water content in the untreated lower layer were unaffected by C. Acryhope concentration (C) was the dominant factor influencing water and suction redistribution.
URI: http://hdl.handle.net/123456789/10169
Appears in Collections:College of Foods And Agricultural Science

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