Fig. 5From: Testing deep placement of an 15N tracer as a method for in situ deep root phenotyping of wheat, barley and ryegrassThe correlations of deep root intensity and 15N enrichment in barley grain. The correlations were conducted on seven genotypes of barley at 0.87–1.30 m (a) and 1.30–1.74 m (b) soil depths in Exp. 3Back to article page