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metadata_soilchem_yamsys.txt
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metadata_soilchem_yamsys.txt
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## This file contains metadata about the laboratory reference dataset
## file: <soilchem_yamsys.csv>; path: <data/soilchem/soilchem_yamsys.csv>
## There is a description of the columns (header name) and details about
## laboratory reference analysis method below
################################################################################
<sample_ID>: Consists of
<country abbreviation>_<site abbreviation>_<field_no>
<country abbreviation>:
"BF": Burkina Faso;
"CI": Côte d'Ivoire
<site abbreviation>:
"lo": Léo (Burkina Faso);
"mo": Midebdo (Burkina Faso)
"tb": Tiénningboué (Côte d'Ivoire);
"sb": Liliyo (Côte d'Ivoire)
(previously named Soubré)
<field_no>:
number from 01 to 20;
separate numbering at each of the YAMSYS sites
<country>: Consists of <country abbreviation>:
"BF": Burkina Faso; "CI": Côte d'Ivoire
<site>: Consists of <location abbreviation>:
"lo": Léo (Burkina Faso);
"mo": Midebdo (Burkina Faso)
"tb": Tiénningboué (Côte d'Ivoire);
"sb": Liliyo (Côte d'Ivoire)
<S>: Total sulfur in mg per kg dry soil; measured by elemental analyzer (vario PYRO cube)
coupled to a mass spectrometer (IsoPrime100, Isoprime Ltd., UK)
<C>: Total carbon in g per kg dry soil; measured by elemental analyzer (vario PYRO cube)
coupled to a mass spectrometer (IsoPrime100, Isoprime Ltd., UK)
<N>: Total nitrogen in g per kg dry soil; measured by elemental analyzer (vario PYRO cube)
coupled to a mass spectrometer (IsoPrime100, Isoprime Ltd., UK)
<ex_Ca> Exchangeable calcium in mg Ca per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<ex_Mg> Exchangeable magnesium in mg Mg per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<ex_K> Exchangeable potassium in mg K per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<ex_Al> Exchangeable aluminium in mg Al per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<ex_Na> Exchangeable sodium in mg Na per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<ex_Fe> Exchangeable iron in mg Fe per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<ex_Mn> Exchangeable manganese in mg Mn per kg dry soil;
measured by 0.1M BaCl2 extraction (Hendershot and Duquette, 1986)
and ICP-OES analysis (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<pH_BaCl2> pH measured in 0.1M BaCl2 extract (Hendershot and Duquette, 1986)
<CEC_eff> Effective Cation Exchange Capacity in cmol(+) per kg dry soil;
calculated from values of exchangeable cations Ca, Mg, K, Na, and Al
<BS_eff> Base saturation in percent;
calculated from ratio of the sum of basic cations
(Ca2+, Mg2+, K+, and Na+) in cmol(+) per kg dry soil tot the <CEC_eff>
multiplied by 100
<pH> pH measured in water using a 1:2 weight-to-volume ratio of
soil:water;
10 g of soil; 20 mL of water
<P_resin> Resin-extractable P in mg P per kg dry soil
(Kouno et al., 1998);
determination of P by malachite green method (Ohno and Zibilske 1991)
<Fe_tot> Total iron in g Fe per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Si_tot> Total silicium in g Si per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Al_tot> Total aluminium in g Al per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<P_tot> Total phosphorus in mg P per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<S_tot> Total sulfur in mg S per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<K_tot> Total potassium in g K per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Ca_tot> Total calcium in g Ca per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Mn_tot> Total manganese in g Mn per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Zn_tot> Total zink in mg Zn per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Cu_tot> Total copper in mg Cu per kg dry soil;
measured by energy dispersive X-ray fluorescence (ED-XRF);
XEPHOS instrument (SPECTRO Analytical Instruments GmbH, Germany)
<Zn_DTPA> DTPA extractable zink in mg Zn per kg dry soil;
determined by DTPA soil test protocol developed
by Lindsay and Norvell (1978).
0.0005M diethylenetriaminepentaacetic acid (DTPA), 0.01M CaCl2, and 0.1 M triethanolamine (TEA).
Element concentrations in the extract were
determined by ICP-OES (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<Cu_DTPA> DTPA extractable copper in mg Cu per kg dry soil;
determined by DTPA soil test protocol developed
by Lindsay and Norvell (1978).
0.0005M diethylenetriaminepentaacetic acid (DTPA), 0.01M CaCl2, and 0.1 M triethanolamine (TEA).
Element concentrations in the extract were
determined by ICP-OES (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<Fe_DTPA> DTPA extractable iron in mg Fe per kg dry soil;
determined by DTPA soil test protocol developed
by Lindsay and Norvell (1978).
0.0005M diethylenetriaminepentaacetic acid (DTPA),
0.01M CaCl2, and 0.1 M triethanolamine (TEA).
Element concentrations in the extract were
determined by ICP-OES (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<Mn_DTPA> DTPA extractable manganese in mg Mn per kg dry soil;
determined by DTPA soil test protocol developed
by Lindsay and Norvell (1978).
0.0005M diethylenetriaminepentaacetic acid (DTPA),
0.01M CaCl2, and 0.1 M triethanolamine (TEA).
Element concentrations in the extract were
determined by ICP-OES (Shimandzu Plasma Atomic Emission Spectrometer ICPE-9820)
<sand> Percent sand determined by particle size analysis using
the hydrometer method described in Bouyoucos (1951).
Soil was stirred with sodium hexametaphosphate and
deionized water.
<silt> Percent silt determined by particle size analysis using
the hydrometer method described in Bouyoucos (1951).
Soil was stirred with sodium hexametaphosphate and
deionized water.
<clay> Percent clay determined by particle size analysis using
the hydrometer method described in Bouyoucos (1951).
Soil was stirred with sodium hexametaphosphate and
deionized water.
################################################################################