Table 2. The content of soil organic carbon (OC%).

Sowing density (seeds m −2 ) [B]	OPS			CPS
	Spring wheat species [A]
	T. sphaerococcum	T. persicum	mean	T. sphaerococcum	T. persicum	mean
	OC (%)
400 500 600	0.703 ± 0.002 0.566 ± 0.006 0.536 ± 0.021	0.696 ± 0.004 0.735 ± 0.005 0.583 ± 0.005	0.699 ± 0.004 0.650 ± 0.084 0.560 ± 0.024	0.726 ± 0.003 0.873 ± 0.002 0.757 ± 0.002	0.705 ± 0.004 0.825 ± 0.004 0.884 ± 0.003	0.716 ± 0.011 0.849 ± 0.024 0.821 ± 0.064
mean	0.602 ± 0.073	0.671 ± 0.064	0.636 ± 0.035	0.785 ± 0.063	0.805 ± 0.074	0.795 ± 0.010
	LSD0.05 A – 0.004; B – 0.011; A/B − 0.011; B/A − 0.016			LSD0.05 A – ns*; B – 0.012; A/B – 0.021; B/A – 0.017

Notes.

^*ns - not significant.