Parameters Soil type Clay amendment Clay amendment Clay amendment Clay amendment Clay amendment
0 2% 4% 8% 16%
Water content, (g g-1)
Athena silt loam
1.16a1
0.88a
1.05a
1.57a
1.19a
Walla Walla silt loam 1.66a 1.74a 2.92b 1.49a 0.87a
Warden sandy loam 0.67a 0.67a 0.60a 1.69a 0.79a
Farrell sandy loam 0.45a 1.48a 2.14b 0.65a 0.66a
Soil wilting point water content (g g-1)
Athena silt loam
0.107
0.107
0.107
0.107
0.107
Walla Walla silt loam 0.104 0.104 0.104 0.104 0.104
Warden sandy loam 0.066 0.066 0.066 0.066 0.066
Farrell sandy loam 0.035 0.035 0.035 0.035 0.035
Crust crushing energy,(J kg-1)
Athena silt loam
0.700a
2.288b
3.874b
8.484c
21.622d
Walla Walla silt loam 0.731a 3.348b 4.724bc 9.502cd 12.938d
Warden sandy loam 0.326a 1.326b 4.209c 8.817cd 10.638d
Farrell sandy loam 0.029a 2.214b 5.409c 5.622c 6.704c
Random Roughness, mm
Athena silt loam
3.80a
4.92a
4.72a
5.74a
5.05a
Walla Walla silt loam 5.55a 4.35a 5.06a 5.42a 4.11b
Warden sandy loam 3.55a 4.09a 3.74a 6.50b 4.67a
Farrell sandy loam 5.54a 4.30a 4.52a 3.86b 4.56a
GMD of aggregate Size, mm
Athena silt loam
2.03a
5.40b
7.05b
9.30b
11.62b
Walla Walla silt loam 3.05a 6.29a 5.23a 9.44b 10.72b
Warden sandy loam 1.73a 5.98b 11.35c 12.65c 10.33c
Farrell sandy loam 0.794a 3.84b 4.90b 6.82c 7.69c
Aggregate fraction less than 0.1mm (SF10) (%) Athena silt loam 2.36 0.15 0.15 1.34 0.90
Walla Walla silt loam 1.04 0.18 1.87 0.34 0.33
Warden sandy loam 1.76 0.14 0.08 0.42 0.49
Farrell sandy loam 0.11 0.05 0.08 0.11 0.69
Aggregate fraction less than 0.84 mm(SF84) (%) Athena silt loam 50.33 17.80 16.04 22.83 19.31
Walla Walla silt loam 40.48 13.71 15.69 13.18 20.49
Warden sandy loam 64.53 19.50 12.59 20.41 18.65
Farrell sandy loam 94.81 29.89 19.81 21.17 42.08
Aggregate fraction less than 2.0 mm(SF200) (%) Athena silt loam 67.84 33.00 26.36 30.51 25.56
Walla Walla silt loam 52.71 26.32 31.85 20.25 22.21
Warden sandy loam 72.28 21.90 13.62 21.85 25.35
Farrell sandy loam 99.89 33.86 22.96 23.66 46.26
Wind direction, degrees
All types
0
0
0
0
0
Wind speed, m s-1 All types Fig.2 Fig.2 Fig.2 Fig.2 Fig.2