Influence of Corn (Zea mays L.) Cultivar Development on Grain Nutrient Concentration

Table 6

Correlation between nutrients (macro and micro) concentration and yield for ten corn cultivars representing five different technological levels, harvesting in 2006 and 2007, at Rolandia County, Paraná State, Brazil.

2005/06	Yield	C	N	P	K	Ca	Mg	Cu	Fe	Mn
C	−0.18
N	−0.28	0.10
P	−0.14	0.07	0.18
K	−0.26	0.05	0.02	0.76**
Ca	0.12	0.11	0.28	0.13	−0.03
Mg	0.08	0.04	0.11	0.85**	0.55**	0.21
Cu	0.12	0.23	0.13	−0.05	−0.18	0.27	0.01
Fe	0.11	0.14	0.12	0.21	0.06	0.53**	0.32	0.38
Mn	0.15	0.10	0.28	0.27	0.02	0.37	0.43*	0.54**	0.55**
Zn	0.37	0.04	0.02	0.25	0.09	0.27	0.32	0.66**	0.44*	0.68**
2007	Yield	C	N	P	K	Ca	Mg	Cu	Fe	Mn
C	0.04
N	−0.69**	0.29
P	0.19	0.32	0.08
K	0.09	0.30	0.10	0.87**
Ca	0.05	−0.05	0.19	0.13	0.17
Mg	0.06	0.04	−0.01	0.58**	0.51**	0.28
Cu	0.04	−0.08	−0.09	−0.03	−0.07	−0.11	0.33
Fe	−0.12	0.11	−0.01	0.30	0.21	0.52**	0.35	0.29
Mn	−0.15	0.21	0.15	0.16	0.08	−0.30	0.30	0.09	0.58**
Zn	0.03	0.02	0.24	0.21	0.26	0.51**	0.14	−0.01	−0.39	−0.15

∗ 𝑃<0.05; ∗∗𝑃<0.01.