Biofortification of Spring Barley Grain with Microelements through Sulfur Fertilization

Table 5

Quantitative ratio Fe : Mn in barley grain.

Year	Control	Type of fertilizer						Mean
		(NH4)2SO4		K2SO4		Wigor S
		Dose of sulphur (kg·ha^−1)
		20	40	20	40	20	40
2010	7.87	7.68	8.03	7.54	6.85	8.58	7.68	7.73
2011	6.11	5.76	7.02	6.57	7.53	5.57	5.87	6.39
2012	5.34	5.40	5.29	4.44	4.75	4.57	5.16	4.94
Mean	6.38	6.28	6.78	6.18	6.38	6.24	6.24	6.35