Construction of a large-scale semi-field facility to study genotypic differences in deep root growth and resources acquisition

Table 3 Comparison of the harvest samples of spring barley cultivars from the border and midsection of each unit in two seasons

	Grain yield		TKW		Protein		N grain
	Mg ha⁻¹		g		%		kg N ha⁻¹
	Border	Mid	Border	Mid	Border	Mid	Border	Mid
2016	6.03 (0.05)	5.56 (0.05)	52.0 (0.14)	51.0 (0.14)	7.9 (0.06)	8.10 (0.07)	74.9 (2.1)	70.6 (1.72)
Position	P < 0.0001		P < 0.0001		P = 0.044		P = 0.0029
Cultivar	P < 0.0001		P < 0.0001		P < 0.0001		P < 0.0001
Position × cultivar	ns; P = 0.32		ns; P = 0.98		ns, P = 0.40		ns; P = 0.26
2017	7.22 (0.07)	6.98 (0.08)	53.6 (0.33)	52.6 (0.42)	9.30 (0.08)	9.60 (0.09)	107.5 (1.77)	107.3 (2.09)
Position	P = 0.0081		P = 0.0034		P = 0.0044		ns, P = 0.95
Cultivar	P < 0.0001		P < 0.0001		P < 0.0001		P < 0.0001
Position × cultivar	ns; P = 0.43		ns; P = 0.89		ns; P = 0.12		ns; P = 0.50

Estimated means, standard error (in brackets) and P values from the corresponding two-way ANOVA output, (n(2016) = 4 × 59; n(2017) = 8 × 79). Grain yield, thousand kernel weight (TKW), protein content (Protein %) and estimated grain nitrogen removal (N grain)

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