Predictor Importance Values for pecan (Carya illinoinensis)

Predictor Name Importance Score Rank
Annual precipitation (mm)20.391
Mean May-September precipitation (mm)8.5939
Mean annual temperature (°C)15.976
Mean May-September temperature (°C)11.7224
Mean temperature of coldest month (°C)13.8412
Mean temperature of warmest month (°C)11.1127
Annual aridity index12.5418
Minimum elevation12.1120
Maximum elevation15.717
Average elevation12.7915
Median elevation13.4214
Range of elevation17.043
Elevation coefficient ofvariation16.864
Elevation standard deviation12.6816
Annual daylength coefficient of variation15.198
Total available water capacity (cm, to 150 cm)14.3711
Total available water supply (cm, to 150 cm)12.2619
Depth to water table (cm)9.9833
Soil permeability rate (cm/hr)9.6335
Soil calcium carbonate (% by weight)14.6210
Soil cation-exchange capacity11.7523
Soil pH16.745
Soil bulk density (g/cm3)17.692
Organic matter content (% by weight)9.4137
Potential soil productivity12.5617
Soil erodibility factor, rock fragment free9.5236
Soil erosion by wind (tons/acre/year)10.6229
Percent soil passing sieve No. 10 (coarse)11.5326
Percent soil passing sieve No. 200 (fine)5.7443
Percent clay (< 0.002 mm size)10.2930
Percent sand (< 0.002 mm size)11.822
Percent silt (< 0.002 mm size)10.2231
Percent of texture clayey9.0538
Percent of texture loamy9.6434
Percent of texture sandy11.0428
Percent of texture other14.989
Alfisol (%)13.6313
Aridisol (%)3.0545
Entisol (%)8.1340
Histosol (%)7.5642
Inceptisol (%)10.1932
Mollisol (%)11.6225
Spodosol (%)5.2944
Ultisol (%)7.9141
Vertisol (%)11.9521