Table 1.

Physico-chemical properties of the observed seedbeds for the three locations, 2 years and two sowing dates considered in the study.

Seedbed/sowing characteristics	En Crambade				Mondonville				Rivières
	2013		2014		2013		2014		2013		2014
	ES (clay soil)*	CS (clay soil)*	ES (silty loam)*	CS (silty clay)*	ES (silty loam)*	CS (silty loam)*	ES (silty loam)*	CS (silty loam)*	ES (silty clay loam)*	CS (clay loam)*	ES (silty clay loam)*	CS (silty clay loam)*
Soil granulometry
Clay (g·g−1)	0.6	0.6	0.25	0.41	0.15	0.15	NT	0.15	0.34	0.30	0.36	0.36
Silt (g·g−1)	0.37	0.37	0.51	0.47	0.64	0.68	NT	0.68	0.45	0.48	0.43	0.43
Sand (g·g−1)	0.03	0.03	0.24	0.12	0.17	0.15	NT	0.15	0.18	0.21	0.18	0.18
Soil chemical characteristics
Total organic Carbon (g·g−1)	0.0131	0.0131	0.0085	0.0112	0.0062	0.0063	NT	0.0063	0.0088	0.0085	0.008	0.008
Total nitrogen (g·g−1)	0.0018	0.0018	0.0011	0.0014	0.0009	0.0008	NT	0.0008	0.001	0.001	0.0011	0.0011
C/N ratio	7.28	7.28	7.73	8.00	6.89	7.88	NT	7.88	8.80	8.50	7.27	7.27
pH	6.6	6.6	8.6	8.4	6.5	6.8	NT	6.8	6.8	6.7	7.2	7.2
Organic matter (g·g−1)	0.022	0.022	0.022	0.022	0.011	0.011	NT	0.011	0.015	0.015	0.014	0.014

ES, early sowing; CS, conventional sowing; NT, not tested.

*Soil classification as defined by FAO (2006).