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APPENDIX: Table I
Soil data in relation to canopy and orientation. Below canopy are means of 0.375R and 0.75R. Beyond canopy vertical influence are calculated as average between 2.0R and 2.5R.
Below canopy | Beyond canopy | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Total mean | |||||||||||
NE | SW | NE | SW | ||||||||
pH | Mean | 5.674 | 5.798 | 4.978 | 5.014 | 5.325 | Max | 6.630 | |||
SD | 0.420 | 0.483 | 0.312 | 0.269 | 0.499 | Min | 4.490 | ||||
OM (%) | Mean | 1.467 | 1.631 | 0.744 | 0.941 | 1.165 | Max | 2.290 | |||
SD | 0.333 | 0.394 | 0.231 | 0.205 | 0.421 | Min | 0.350 | ||||
N (%) | Mean | 0.072 | 0.078 | 0.036 | 0.048 | 0.056 | Max | 0.130 | |||
SD | 0.025 | 0.040 | 0.012 | 0.018 | 0.029 | Min | 0.010 | ||||
C:N | Mean | 15.173 | 16.038 | 16.986 | 16.932 | 16.508 | Max | 47.270 | |||
SD | 2.463 | 10.416 | 5.748 | 10.216 | 7.635 | Min | 8.310 | ||||
P (ppm) | Mean | 26.792 | 31.100 | 28.025 | 21.275 | 26.917 | Max | 64.800 | |||
SD | 17.040 | 15.595 | 15.293 | 12.601 | 15.056 | Min | 0.000 | ||||
K (ppm) | Mean | 102.478 | 150.588 | 57.003 | 60.700 | 89.600 | Max | 237.780 | |||
SD | 34.784 | 40.323 | 10.205 | 10.707 | 42.300 | Min | 41.450 | ||||
Ca (meq/100 g) | Mean | 2.572 | 3.251 | 0.804 | 1.348 | 1.859 | Max | 5.590 | |||
SD | 1.018 | 1.391 | 0.247 | 0.402 | 1.141 | Min | 0.460 | ||||
Mg (meq/100 g) | Mean | 0.348 | 0.478 | 0.135 | 0.203 | 0.274 | Max | 0.720 | |||
SD | 0.116 | 0.142 | 0.042 | 0.073 | 0.146 | Min | 0.080 | ||||
CEC (meq/100 g) | Mean | 8.685 | 9.663 | 6.703 | 6.849 | 7.678 | Max | 13.910 | |||
SD | 2.323 | 2.937 | 1.893 | 2.630 | 2.616 | Min | 2.340 | ||||
Sand (%) | Mean | 85.020 | 84.412 | 86.192 | 82.496 | 84.386 | Max | 91.833 | |||
SD | 3.841 | 2.878 | 3.329 | 5.491 | 4.181 | Min | 70.085 | ||||
Silt (%) | Mean | 12.564 | 14.619 | 12.667 | 16.063 | 14.340 | Max | 27.493 | |||
SD | 3.641 | 2.910 | 3.182 | 5.054 | 3.928 | Min | 7.214 | ||||
Clay (%) | Mean | 1.224 | 1.362 | 1.141 | 1.440 | 1.274 | Max | 2.422 | |||
SD | 0.267 | 0.256 | 0.195 | 0.449 | 0.323 | Min | 0.785 | ||||
Density (g/cm3) | Mean | 1.396 | 1.378 | 1.664 | 1.559 | 1.501 | Max | 1.883 | |||
SD | 0.138 | 0.154 | 0.157 | 0.137 | 0.173 | Min | 1.082 |