. 2018 Dec 15;332:73–83. doi: 10.1016/j.geoderma.2018.07.002

Table 1.

Summary physical and chemical data of Highfield Ley-Arable experiment soils.

Treatment	Density^a/g cm⁻³	pH^a (H₂O)/-log(g[H⁺]L⁻¹)	Organic carbon^a/mg g⁻¹ soil	Free organic carbon^b/μg g⁻¹ soil	Intra-aggregate organic carbon^b/μg g⁻¹ soil	Nitrogen^a/μg g⁻¹ soil	NaOH-EDTA extractable phosphorus^c/μg g⁻¹ soil
Fallow	1.30–1.45	5.1	0.8	150	380	100	235
Arable	1.30–1.45	5.8	1.3	370	490	150	517
Grassland	0.99	6.0	3.9	4690	3010	390	662