Determination of Land Suitability Criteria for Maize Hybrid in Boalemo Regency Based on Optimum Yield and Selected Land Quality
Table 2
Brief statistics of land quality and characteristics.
Latent variables/indicators
Unit
n
Min
Median
Mean
Max
SD
X1 (temperature)
X1.1 (temperature)
°C
67
26.79
27.80
28.01
28.19
0.63
X2 (water availability)
X2.1 (rainfall)
Mm
67
1,246.00
1,533.42
1,478.00
1,849.00
232.69
X2.2 (wet month)
Month
67
0.00
1.03
1.00
3.00
0.85
X2.3 (dry month)
Month
67
2.00
3.39
4.00
5.00
1.06
X2.4 (LGP)
Day
67
211.00
246.00
214.00
304.00
44.54
X3 (oxygen availability)
X3.1 (drainage)
Class
67
0.00
3.76
4.00
6.00
1.82
X4 (rooting conditions)
X4.1 (texture)
Class
67
1.00
2.21
2.00
5.00
0.99
X4.1.1 (sand fraction)
%
67
5.00
41.58
43.00
81.33
18.51
X4.1.2 (silt fraction)
%
67
7.33
27.31
24.50
51.50
11.54
X4.1.3 (clay)
%
67
11.33
31.90
30.00
56.33
12.72
X4.2 (coarse material)
%
67
5.00
17.27
10.00
70.00
16.58
X4.3 (effective depth)
Cm
67
10.00
74.55
74.00
160.00
36.40
X5 (nutrient retention)
X5.1 (pH, H2O)
67
5.00
5.92
5.90
7.15
0.52
X5.2 (pH, KCl)
67
4.35
5.24
5.17
6.60
0.56
X5.3 (organic C)
%
67
0.41
0.85
0.77
2.35
0.39
X5.4 (CEC)
Cmol(+)/kg
67
8.94
24.89
22.43
59.57
11.41
X5.5 (base saturation)
%
67
45.03
56.22
52.85
81.89
9.76
X6 (nutrient availability)
X6.1 (total N)
%
67
0.04
0.09
0.08
0.27
0.04
X6.2 (P availability)
Mg/kg
67
0.73
8.62
3.77
58.67
12.61
X6.3 (K exchangeable)
Cmol(+)/kg
67
0.07
0.39
0.24
1.92
0.42
X7 (sodicity)
X7.1 (ESP)
%
67
0.76
7.06
6.20
24.17
5.62
X8 (erosion hazard)
X8.1 (slopes)
%
67
1.00
9.58
6.00
25.00
7.29
X8.2 (soil erosion)
Tons/ha/year
67
3.66
334.51
110.27
1772.43
439.08
X9 (flooding hazard)
X9.1 (inundation height)
Cm
67
0.00
7.58
0.00
50.00
17.10
X 9.2 (inundation period)
Day
67
0.00
0.64
0.00
5.00
1.52
X10 (land preparation)
X10.1 (rock outcrops)
%
67
0.00
6.64
0.00
45.00
11.56
X10.2 (surface rock)
%
67
0.00
6.58
0.00
45.00
11.59
Y (hybrid maize yield)
Ton/ha
67
2.85
4.95
4.68
8.07
1.15
n, the number of the land unit; min, minimum; max, maximum; SD, standard deviation; LGP, long growth period; CEC, cation exchange capacity; ESP, exchangeable sodium percentage.
