Copper Availability in Seven Israeli Soils Incubated with and without Biosolids
I. W. Olivera,*,
A. Hassb,
G. Merringtonc,
P. Fineb and
M. J. McLaughlina,d
a Soil & Land Systems, University of Adelaide, PMB 1 Glen Osmond, South Australia, Australia 5064
b Institute of Soil, Water and Environmental Sciences, Volcani Centre, POB 6 Bet Dagan, 50250 Israel
c Environment Agency, Chemicals Team, Howbery Park, Wallingford, Oxfordshire, OX10 8BD, United Kingdom
d Division of Land & Water, CSIRO, PMB 2 Glen Osmond, South Australia, Australia 5064

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Fig. 1. Calibration curve constructed to determine cupric ion activity (pCu2+) from mV readings. The slope deviates slightly from the ideal Nernstian response of 29.58 mV.
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Fig. 2. Organic carbon content (g kg1) before and after 7 yr of incubation for (a) soils and (b) soilbiosolid mixtures (amended soils). Error bars indicate 2x standard errors (n = 2). NO, Nahal-Oz; G4, Golan 4; G37, Golan 37; MM, Mitzpe Masuah; TR, Terra Rossa; NET, Netanya 6; DS, dune sand.
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Fig. 3. pH before and after 7 yr of incubation for (a) soils and (b) soilbiosolid mixtures (amended soils). Error bars indicate 2x standard errors (n = 2). NO, Nahal-Oz; G4, Golan 4; G37, Golan 37; MM, Mitzpe Masuah; TR, Terra Rossa; NET, Netanya 6; DS, dune sand.
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Fig. 4. Isotopically exchangeable copper (CuE, mg kg1) before and after 7 yr of incubation for (a) soils and (b) soilbiosolid mixtures (amended soils). Error bars indicate 2x standard errors (n = 3). NO, Nahal-Oz; G4, Golan 4; G37, Golan 37; MM, Mitzpe Masuah; TR, Terra Rossa; NET, Netanya 6; DS, dune sand.
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Fig. 5. Cupric ion activity (pCu2+) in CaCl2 extracts before and after 7 yr of incubation for (a) soils and (b) soilbiosolid mixtures (amended soils). Error bars indicate 2x standard errors (n = 2). NO, Nahal-Oz; G4, Golan 4; G37, Golan 37; MM, Mitzpe Masuah; TR, Terra Rossa; NET, Netanya 6; DS, dune sand.
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Copyright © 2005 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.