Determination of Land Suitability Criteria for Maize Hybrid in Boalemo Regency Based on Optimum Yield and Selected Land Quality

Table 3

Outer loading (loading factor) and the average variance extracted from study variables.

Indicators (land characteristics)		Latent variables (land quality)	Loading factors	t stat	Status	AVE
X1.1 (temperature)	⟶	X1 (temperature)	1.000	11.192	Valid	1.000
X2.1 (rainfall)	⟶	X2 (water availability)	0.838	0.085	Valid	0.906
X2.2 (wet month)	⟶		0.989	0.999	Valid
X2.3 (dry month)	⟶		0.850	0.428	Valid
X2.4 (LGP)	⟶		0.993	1.431	Valid
X3.1 (drainage)	⟶	X3 (oxygen availability)	1.000	0.000	Valid	1.000
X4.1 (texture)	⟶	X4 (rooting condition)	0.013	0.066	Invalid	0.573
X4.2 (coarse material)	⟶		0.921	1.086	Valid
X4.3 (effective depth)	⟶		−0.899	1.047	Valid
X5.1 (pH, H2O)	⟶	X5 (nutrient retention)	0.647	0.857	Valid	0.360 (invalid)
X5.2 (pH, KCl)	⟶		0.570	1.973	Valid
X5.3 (organic C)	⟶		0.831	3.135	Valid
X5.4 (CEC)	⟶		0.436	1.381	Invalid
X5.5 (base saturation)	⟶		0.365	0.845	Invalid
X6.1 (total N)	⟶	X6 (nutrient availability)	0.760	3.226	Valid	0.585
X6.2 (P availability)	⟶		0.587	1.385	Valid
X6.3 (K exchangeable)	⟶		0.897	6.907	Valid
X7.1 (ESP)	⟶	X7 (sodicity)	1.000	0.000	Valid	1.000
X8.1 (slopes)	⟶	X8 (erosion hazard)	0.954	21.438	Valid	0.932
X8.2 (soil erosion)	⟶		0.941	18.308	Valid
X9.1 (inundation height)	⟶	X9 (flooding hazard)	0.984	4.213	Valid	0.984
X9.2 (inundation period)	⟶		0.985	3.918	Valid
X10.1 (rock outcrops)	⟶	X10 (land preparation)	0.998	189.133	Valid	0.995
X10.2 (surface rock)	⟶		0.998	320.273	Valid

AVE, average variance extracted; LGP, long growth period; CEC, cation exchange capacity; ESP, exchangeable sodium percentage.