אסיף מאגר המחקר החקלאי

Effects of olive mill wastewater on soil microarthropods and soil chemistry in two different cultivation scenarios in Israel and Palestinian territories

Year:

2015

Source of publication :

Authors :

Volume :

5

Co-Authors:

Kurtz, M.P., Group of Environmental and Soil Chemistry, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, Germany
Peikert, B., Group of Environmental and Soil Chemistry, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, Germany
Brühl, C., Group of Ecotoxicology and Environment, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, Germany
Dag, A., Agricultural Research Organization, Gilat Research Center, Gilat, Israel
Zipori, I., Agricultural Research Organization, Gilat Research Center, Gilat, Israel
Shoqeir, J.H., Department of Earth and Environmental Science, Al-Quds University, Abu-Dis, P.O. Box 20002, Jerusalem, Palestine
Schaumann, G.E., Group of Environmental and Soil Chemistry, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, Germany

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Abstract:

Although olive mill wastewater (OMW) is often applied onto soil and is known to be phytotoxic, its impact on soil fauna is still unknown. The objective of this study was to investigate how OMW spreading in olive orchards affects Oribatida and Collembola communities, physicochemical soil properties and their interdependency. For this, we treated plots in two study sites (Gilat, Bait Reema) with OMW. Among others, the sites differed in irrigation practice, soil type and climate. We observed that soil acidity and water repellency developed to a lower extent in Gilat than in Bait Reema. This may be explained by irrigation-induced dilution and leaching of OMW compounds in Gilat. In Bait Reema, OMW application suppressed emergence of Oribatida and induced a community shift, but the abundance of Collembola increased in OMW and water-treated plots. In Gilat, Oribatida abundance increased after OMW application. The effects of OMW application on soil biota result from an interaction between stimulation of biological activity and suppression of sensitive species by toxic compounds. Environmental and management conditions are relevant for the degree and persistence of the effects. Moreover, this study underlines the need for detailed research on the ecotoxicological effects of OMW at different application rates. © 2015 by the authors.

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