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

Table 6

Composite reliability and Cronbach’s alpha test.

Indicators (land characteristics)	Cronbach’s alpha	Composite reliability
X1.1 (temperature)	1.000	1.000
X2.1 (rainfall)	0.975	0.965
X2.2 (wet month)
X2.3 (dry month)
X2.4 (long growth periods)
X3.1 (drainage)	1.000	1.000
X4.1 (texture)	0.002^nor	−1.055^nor
X4.2 (coarse material)
X4.3 (effective depth)
X5.1 (pH, H2O)	0.718	0.628
X5.2 (pH, KCl)
X5.3 (organic C)
X5.4 (cation exchange capacity)
X5.5 (base saturation)
X6.1 (total N)	0.805	0.681
X6.2 ( availability)
X6.3 (K exchangeable)
X7.1 (exchangeable sodium percentage)	1.000	1.000
X8.1 (slopes)	0.965	0.928
X8.2 (soil erosion)
X9.1 (inundation height)	0.992	0.984
X9.2 (inundation period)
X10.1 (rock outcrops)	0.998	0.995
X10.2 (surface rock)

nor, not reliable.