. 2014 Mar 14;380(1):133–151. doi: 10.1007/s11104-014-2079-8

Table 4.

PSD parameters of soil under different cover crop species. Species with similar overall PSD are grouped together

	Species	θ_s cm³ cm⁻³	r_m,Kosugi μm	ς_Kosugi ₋
Group 1 High porosity – high median radius	L. sativus	0.471ab	91.3a	2.19abc
	Mixture 1	0.478a	79.1abc	2.28abc
	M. officinalis ^a	0.442bcd	85.4ab	2.15bc
	Mean	0.463A	85.3A	2.21A
Group 2 High pore radius range	P. tanacetifolia	0.446abc	33.7d	2.46a
	L. usitatissimum	0.469ab	52.8bcd	2.31ab
	R. sativus	0.457abc	52.7bcd	2.40ab
	V. sativa	0.463ab	65.8abcd	2.34ab
	Mean	0.459A	51.3B	2.38B
Group 3 Low pore radius range	S. alba	0.456abc	50.8bcd	1.89c
	Mixture 2	0.465ab	81.7abc	1.90c
	T. alexandrinum ^a	0.436bcd	89.0ab	1.84c
	Mean	0.452A	73.8A	1.88C
Group 4 Low porosity – low median radius	S. cereale	0.431 cd	47.0de	2.25abc
	F. esculentum	0.413d	46.0 cd	1.95bc
	Mean	0.422B	46.5B	2.10 AC

Common lower-case letters at the respective parameters indicate non-significant differences at p ≤ 0.05. Group means are compared by linear contrasts. Significant differences in parameter means at p ≤ 0.05 between groups are indicated by upper-case letters

^aIntermediate species not clearly related to a single groups