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Field Survey Summary Tables – Ecodistrict 823
90
Table 86. 2009 irrigated canola in the Vauxhall Plain Ecodistrict (823) in the Mixed Grassland Ecoregion
(11 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Smooth brome
20.2
15.2
75.0
7.1
34.9
61.6
132.2
2
Wild oats
10.1
6.1
60.0
2.4
24.2
24.2
50.9
3
Perennial sow-thistle
20.2
3.0
15.0
0.2
0.8
0.8
27.5
4
Dandelion
10.1
4.0
40.0
0.3
2.8
2.8
23.4
5
Spiny annual sow-thistle
10.1
2.0
20.0
0.1
1.2
1.2
15.7
6
Wild buckwheat
10.1
0.5
5.0
< 0.1
0.2
0.2
10.1
7
Kochia
10.1
0.5
5.0
< 0.1
0.2
0.2
10.1
8
Ball mustard
10.1
0.5
5.0
< 0.1
0.2
0.2
10.1
9
Canada thistle
10.1
0.5
5.0
< 0.1
0.2
0.2
10.1
10
Wheat
10.1
0.5
5.0
< 0.1
0.2
0.2
10.1
Table 87. 2009 irrigated perennial crops in the Vauxhall Plain Ecodistrict (823) in the Mixed Grassland
Ecoregion (13 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
54.8
17.9
32.6
1.4
2.5
5.8
79.3
2
Canada thistle
23.2
9.2
39.7
0.9
3.7
9.0
41.7
3
Quack grass
29.3
3.7
12.5
0.8
2.6
4.2
33.4
4
Foxtail barley
30.5
4.6
15.2
0.3
1.1
1.8
27.1
5
Redroot pigweed
7.3
5.9
80.0
0.7
9.0
9.0
25.5
6
Green foxtail
8.5
4.7
55.0
0.4
4.4
4.4
18.6
7
Lamb's-quarters
7.3
5.1
70.0
0.3
4.4
4.4
17.8
8
Perennial sow-thistle
15.8
3.3
20.7
0.2
1.0
1.4
15.4
9
Tartary buckwheat
8.5
3.0
35.0
0.2
2.2
2.2
12.2
10
Kochia
15.8
1.2
7.7
< 0.1
0.3
0.4
9.8
11
Wild oats
7.3
0.7
10.0
0.1
1.4
1.4
6.3
12
Rough cinquefoil
8.5
0.4
5.0
< 0.1
0.2
0.2
4.7
13
Flixweed
7.3
0.4
5.0
< 0.1
0.2
0.2
4.1
14
Canola (Argentine)
7.3
0.4
5.0
< 0.1
0.2
0.2
4.1
Table 88. 2009 irrigated alfalfa in the Vauxhall Plain Ecodistrict (823) in the Mixed Grassland Ecoregion
(10 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
50.8
22.3
43.9
1.7
3.4
5.8
78.9
2
Quack grass
39.4
4.9
12.5
1.0
2.6
4.2
39.1
3
Canada thistle
19.7
8.4
42.5
0.9
4.7
9.0
34.3
4
Redroot pigweed
9.8
7.9
80.0
0.9
9.0
9.0
28.9
5
Foxtail barley
29.5
3.9
13.3
0.3
0.9
1.8
21.7
6
Green foxtail
11.4
6.3
55.0
0.5
4.4
4.4
21.3
7
Lamb's-quarters
9.8
6.9
70.0
0.4
4.4
4.4
20.5
8
Perennial sow-thistle
21.3
4.4
20.7
0.2
1.0
1.4
18.4
9
Tartary buckwheat
11.4
4.0
35.0
0.3
2.2
2.2
14.2
10
Wild oats
9.8
1.0
10.0
0.1
1.4
1.4
7.6
11
Flixweed
9.8
0.5
5.0
< 0.1
0.2
0.2
5.1
12
Kochia
9.8
0.5
5.0
< 0.1
0.2
0.2
5.1
13
Canola (Argentine)
9.8
0.5
5.0
< 0.1
0.2
0.2
5.1