Evaluation of the Nutrient Composition of Maize in Different NPK Fertilizer Levels Based on Multivariate Method Analysis

Table 3

Correlation analysis between nutrients.

		N	P	K	Mg	Ca	S	Zn	Fe	Cu	Mn	Mo
Stalk	P	0.852
	K	0.563	0.600
	Mg	0.721	0.782	0.498
	Ca	0.784	0.826	0.220	0.659
	S	0.942	0.871	0.566	0.739	0.808
	Zn	0.719	0.878	0.333	0.786	0.842	0.752
	Fe	0.835	0.802	0.269	0.684	0.870	0.821	0.793
	Cu	0.608	0.439	0.082	0.293	0.681	0.617	0.418	0.639
	Mn	0.859	0.820	0.519	0.747	0.723	0.883	0.742	0.720	0.526
	Mo	0.628	0.426	0.345	0.462	0.352	0.593	0.331	0.449	0.362	0.598
	Ni	0.664	0.473	0.371	0.451	0.401	0.642	0.325	0.492	0.387	0.567	0.852
Leaves	P	0.794
	K	0.787	0.713
	Mg	0.485	0.516	0.266
	Ca	0.192	0.361	0.005	0.748
	S	0.808	0.834	0.808	0.343	0.180
	Zn	0.670	0.878	0.563	0.687	0.573	0.639
	Fe	0.806	0.829	0.639	0.629	0.453	0.729	0.803
	Cu	−0.196	−0.243	−0.283	0.119	0.413	−0.136	−0.170	−0.133
	Mn	0.636	0.554	0.600	0.196	−0.038	0.584	0.390	0.554	−0.112
	Mo	0.120	0.081	0.150	−0.109	−0.184	0.055	0.049	0.108	−0.200	0.202
	Ni	0.171	0.095	0.184	−0.027	−0.183	0.113	0.094	0.160	−0.214	0.127	0.609
Cob	P	0.093
	K	0.076	0.230
	Mg	0.180	0.759	0.002
	Ca	−0.025	0.617	0.476	0.603
	S	0.368	0.771	0.431	0.668	0.587
	Zn	−0.334	0.366	0.248	0.273	0.533	0.012
	Fe	0.027	0.361	−0.005	0.276	0.173	0.427	0.025
	Cu	0.323	0.476	−0.009	0.362	0.256	0.711	−0.370	0.308
	Mn	−0.102	−0.022	0.061	0.076	0.087	0.162	−0.185	0.420	0.045
	Mo	0.006	0.606	0.075	0.439	0.273	0.571	0.093	0.605	0.420	0.118
	Ni	−0.031	0.322	−0.030	0.189	0.120	0.341	0.053	0.989	0.253	0.394	0.616
Grain	P	0.130
	K	−0.006	0.908
	Mg	0.139	0.974	0.834
	Ca	−0.045	0.007	−0.030	−0.015
	S	0.015	0.370	0.191	0.428	0.066
	Zn	−0.154	0.570	0.677	0.525	0.055	0.265
	Fe	0.225	0.509	0.379	0.556	−0.017	0.448	−0.058
	Cu	−0.289	−0.007	0.149	−0.010	0.111	−0.174	0.055	0.313
	Mn	0.069	0.318	0.337	0.314	−0.161	0.232	0.103	0.220	−0.108
	Mo	−0.193	−0.294	−0.354	−0.326	0.298	0.014	−0.298	−0.020	0.143	−0.185
	Ni	−0.157	0.100	0.122	0.054	−0.255	−0.247	0.245	−0.073	0.112	0.106	0.070

Nitrogen (N), potassium (K), phosphorus (P), magnesium (Mg), calcium (Ca), sulphur (S), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), nickel (Ni), molybdenum (Mo). , significant on 0.01 and 0.05.