Table 5.

Assessment of the PLS models for nutrient predictions.

Element	Mg	P	S	K	Ca
MODELING
Number of factors	8	9	6	7	8
RMSEP	0.0246	0.0226	0.0189	0.2877	0.2555
VALIDATION
RMSEP	0.0269	0.0249	0.0224	0.3282	0.3257
BIAS	0.0051	0.0040	0.0026	0.0044	0.0187
SEPC	0.0264	0.0246	0.0223	0.3282	0.3251
CV	14.9437	26.1488	25.5306	29.4423	41.2515
d	0.7352	0.6910	0.7597	0.8327	0.6865