Can We Predict How Earthworm Effects on Plant Growth Vary with Soil Properties?

Table 1

References included in the survey of C and N contents in soil and the soil texture used in earthworm effects on plant growth.

References	Soil classification	Soil texture	N total	Clay	Sand	C Total
Aira and Plearce 2009	John Innes potting compost no. 2	Loamy compost	?	?	20%	?
Blouin et al. 2005	Ultisol	Sandy soil	0.05%	6%	78%	0.91%
Blouin et al. 2006	Ultisol	Sandy soil	0.05%	6%	78%	0.91%
Blouin et al. 2007	Ultisol	Sandy soil	0.05%	6%	78%	0.91%
Bonkowski et al. 2001	?	Loam soil + sand	0.1%	?	>50%	1.52%
Clapperton et al. 2001	Chernozem	Loamy soil	?	?	?	?
Derouard et al. 1997	?	Sandy soil	0.11%	5%	87%	0.91%
Devliegher and Verstraete 1997	Ardoyne	Sandy soil	?	?	?	0.9%
Daube et al. 1997	Xerosol, Palexeralf, wiesenboden	Sandy soil, loamy soil and clayey soil	?	?	?	?
Eisenhauer et al. 2009	Eutric Fluvisol	Loam soil	0.3%	?	?	4.6%
Eisenhauer et al. 2008	Gleyic cambisol	Silty soil	?	22%	9%	1.1%
Eisenhauer and Scheu 2008a	Eutric Fluvisol	Loam soil	0.3%	?	?	4.6%
Eisenhauer and Scheu 2008b	Eutric Fluvisol	Loam soil	0.3%	?	?	4.6%
Eriksen-Hamel and Whalen 2007	Typic endoquent	Sandy loam soil	?	12%	58%	2.45%
Eriksen-Hamel and Whalen 2008	Typic endoquent	Loam soil	?	?	?	5.6%–13.3%
Fraser et al. 2003	Udic dystrochrept	Silt loam soil	0.2%	?	?	2.6%
Gilot 1997	Ferralsol	Sandy soil	0.44%–0.59%	6%–10%	>75%	>1%
Gilot-Villenave et al. 1996	Ferralsol	Sandy soil	0.4%–1.2%	2.4%–4.5%	>80%	0.28%–1.18%
Hale et al. 2008	Eutroboralf	Silty clay loam soil	?	?	?	?
Hale et al. 2006	Eutroboralf	?	?	?	?	?
Hopp and Slatter 1948	?	Clayey soil	?	70%	16%	?
Kreuzer et al. 2004	?	?	<0.1%	?	?	1.8%
Taossi et al. 2009a	Cambisol	Sandy soil	0.12%	6.9%	74%	1.47%
Taossi et al. 2009b	Cambisol and leptosol	Sandy soil and clayey soil	0.12%; 0.46%	6.9%; 34.4%	74%; 27%	1.47%; 5.67%
Milcu et al. 2006	Eutric Fluvisol	Loam soil	0.3%	?	?	4.6%
Milleret et al. 2009	Anthrosol	Sandy soil + compost	?	26.7%	45.3%	?
Newington et al. 2004	?	Sandy loam + aquatic compost + leaf mulch	<0.01%	?	?	?
Ortiz-Ceballos et al. 2007a	Fluvisol	Silty clay loam soil	0.25%	26.8%	41.5%	?
Ortiz-Ceballos et al. 2007b	Fluvisol	Silty clay loam soil	0.25%	26.8%	41.5%	?
Partsch et al. 2006	Eutric Fluvisol	Loam soil	0.3%	?	15%	4.6%
Pashanasi et al. 1996	Paleudult	Sandy loam soil	?	23%	55%	?
Patron et al. 1999	Inceptisol	Sandy soil	0.08%	11%	82%	0.85%
Poveda et al. 2005a	?	?	?	?	?	?
Poveda et al. 2005b	?	?	?	?	?	?
Schmidt and Curry 1999	Podzol	Loam to clay loam soil	0.18%	19%	47%	1.88%
Stephens and Davoren 1995	Calcic Natrixeralf	Calcic soil	?	?	?	1.5%
Stephens and Davoren 1997	Calcic Natrixeralf	Calcic soil	?	?	?	?
Thompson et al. 1993	?	Loam soil	?	?	?	?
Welke and Parkinson 2003	Dystric brunisols, grey-brown luvisols	Sandy loam soil	0.1%–1.07%	?	?	21.63%–43.73%
Wurst et al. 2008	?	Loamy sandy mineral soil	0.13%	?	?	2.1%
Wurst et al. 2005	Cambisol	Loam soil	0.087%	?	?	1.58%
Wurst et al. 2003	?	Loam soil	0.087%	?	?	1.58%
Zaller and Arnone 1999	Rendzina	Calcareous soil	?	?	?	?