TY - JOUR
T1 - Soil surface water repellency induced by treated wastewater irrigation
T2 - Physico-chemical characterization and quantification
AU - Nadav, Itamar
AU - Tarchitzky, Jorge
AU - Lowengart-Aycicegi, Anat
AU - Chen, Yona
PY - 2013/1
Y1 - 2013/1
N2 - Irrigation with treated wastewater (TWW) is commonly practiced in Israel to relieve freshwater (FW) shortages. We hypothesized that the organic matter (OM) originating from TWW irrigation alters the physico-chemical properties of the soil, induces water repellency in the soil's top layer, and consequently alters water distribution in the soil profile. In measurements taken in an avocado orchard on a clayey soil, water repellency was found in TWW-irrigated plots. In addition, smaller wetted surface areas were recorded around the drippers in comparison with FW drippers. Drier zone below soil surface was observed in TWW-emitting drippers. OM extraction from the different plots exhibited differences in quantity and quality of organic substances between TWW- and FW-irrigated soils, with a higher quantity of hydrophobic substances in the TWW-irrigated soil extract.
AB - Irrigation with treated wastewater (TWW) is commonly practiced in Israel to relieve freshwater (FW) shortages. We hypothesized that the organic matter (OM) originating from TWW irrigation alters the physico-chemical properties of the soil, induces water repellency in the soil's top layer, and consequently alters water distribution in the soil profile. In measurements taken in an avocado orchard on a clayey soil, water repellency was found in TWW-irrigated plots. In addition, smaller wetted surface areas were recorded around the drippers in comparison with FW drippers. Drier zone below soil surface was observed in TWW-emitting drippers. OM extraction from the different plots exhibited differences in quantity and quality of organic substances between TWW- and FW-irrigated soils, with a higher quantity of hydrophobic substances in the TWW-irrigated soil extract.
UR - http://www.scopus.com/inward/record.url?scp=84871938681&partnerID=8YFLogxK
U2 - 10.1007/s00271-011-0291-3
DO - 10.1007/s00271-011-0291-3
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AN - SCOPUS:84871938681
SN - 0342-7188
VL - 31
SP - 49
EP - 58
JO - Irrigation Science
JF - Irrigation Science
IS - 1
ER -
