אסיף מאגר המחקר החקלאי

Polymers' effects on infiltration and soil erosion during consecutive simulated sprinkler irrigations

Year:

1992

Source of publication :

Authors :

Volume :

56

Co-Authors:

Levy, G.J., Inst. of Soils & Water, Agricultural Res. Org., The Volcani Center, PO Box 6, Bet Dagan, Israel
Levin, J., Inst. of Soils & Water, Agricultural Res. Org., The Volcani Center, PO Box 6, Bet Dagan, Israel
Gal, M., Inst. of Soils & Water, Agricultural Res. Org., The Volcani Center, PO Box 6, Bet Dagan, Israel
Ben-Hur, M., Inst. of Soils & Water, Agricultural Res. Org., The Volcani Center, PO Box 6, Bet Dagan, Israel
Shainberg, I., Inst. of Soils & Water, Agricultural Res. Org., The Volcani Center, PO Box 6, Bet Dagan, Israel

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Abstract:

The effects of low concentrations of two polymers, an anionic polyacrylamide (PAM) and a cationic polysaccharide (PSD), on soil permeability and erosion from a grumusol and a loess, were studied during five consecutive irrigations of 60 mm each. During the first three irrigations of water and polymers, the final infiltration rates (FIR) of the soils were significantly higher than those of the untreated samples (control). In the subsequent two irrigations with water only, the FIR values of the treated samples decreased to values similar to those of the control. Soil losses in all the PAM treatments were significantly lower than those in the PSD treatments. Both polymers stabilized soil aggregates, but PAM also cemented aggregates together and increased their resistance to erosion. -from Authors

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