Establishing Land Suitability Criteria for Cashew (Anacardium occidentale L.) in Indonesia
Table 3
Data summary of cashew production, used for validity test.
Site code
Age-adjusted Production (kg·tree−1)
Land suitability class
Validation test result**
According to age-adjusted production
Soil Depth
Surface Rock
Slope
Elevation
Dry month
Wet month
Rainfall
pH
Organic-C
Total-N
Available-P
Exchangeable-K
Base sat.
Clay content
Sand content
CEC
According to land characteristics*
A1
25.94
S3
S1
S1
S1
S1
S1
S2
S2
S3
S1
S1
S2
S2
S2
S1
S2
S1
S3
1
Al2
22.68
S3
S1
S1
S1
S1
S1
S2
S1
S3
S1
S1
S2
S2
S2
S1
S2
S1
S3
1
B1
19.21
N
S2
S1
S1
S1
S1
S2
S2
S3
S1
S1
S2
S1
S1
N
S3
S2
N
1
F.15
122.43
S3
S1
S1
S1
S1
S1
S3
S1
S1
S1
S1
S3
S1
S1
S1
S1
S1
S3
1
F.28
30.12
S3
S1
S1
S1
S1
S3
S1
S1
S1
S1
S1
S1
S1
S1
S1
S3
S1
S3
1
F.29
26.29
S3
S1
S1
S1
S3
S3
S3
S1
S1
S1
S1
S2
S1
S1
S1
S2
S1
S3
1
F.31
21.72
S3
S1
S1
S1
S1
S3
S1
S1
S1
S1
S1
S3
S1
S1
S1
S1
S1
S3
1
ML1
34.72
S3
S1
S1
S1
S2
S1
S3
S1
S3
S1
S1
S3
S1
S1
S1
S1
S1
S3
1
ML3
52.11
S3
S1
S1
S2
S1
S1
S3
S1
S2
S1
S1
S3
S1
S1
S1
S1
S1
S3
1
O1
21.98
S3
S1
S1
S2
S1
S1
S2
S2
S2
S1
S1
S2
S1
S1
S2
S3
S1
S3
1
PK3
52.95
S3
S1
S1
S3
S2
S2
S3
S3
S3
S1
S1
S2
S1
S1
S2
S3
S3
S3
1
PK4
55.58
S2
S1
S1
S2
S2
S2
S2
S3
S3
S1
S1
S2
S2
S2
S3
S3
S3
S3
0
SA1
29.49
S3
S1
S1
S1
S1
S2
S2
S1
S3
S2
S2
S2
S1
S1
S2
S3
S3
S3
1
Y12
5.88
N
S1
S1
S3
S1
S1
S2
S1
S1
S1
S1
S2
S1
S1
N
S3
S1
N
1
Y14
9.70
N
S1
S1
S2
S1
S1
S1
S1
S2
S2
S1
S2
S1
S1
S1
S1
S1
S2
0
Y16
11.78
N
S1
S1
S1
S1
S1
S1
S1
S1
S2
S1
S3
S1
S1
N
S3
S1
N
1
Y18
19.66
N
S1
S1
S1
S2
S1
S1
S1
0
S2
S3
S2
S1
S1
S1
S2
S1
S3
0
Y19
60.04
N
S1
S1
S1
S2
S1
S1
S1
0
S2
S1
S2
S1
S1
N
S3
S1
N
1
Y27
98.00
S1
S1
S2
S1
S2
S1
S1
S1
S2
S1
S1
S1
S1
S1
S1
S1
S1
S2
0
Y6
11.28
N
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S3
S2
S2
N
S3
S1
N
1
Note: *using the principle of maximum limitation method.
**1 means valid, where result of land suitability class according to production give the same result with the land suitability class according to land characteristics. 0 means invalid, where result of land suitability class according to production gives the different result with the land suitability class according to land characteristics.