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Field Survey Summary Tables – Cardston County
101
Table 104. 2009 irrigated fields in Cardston County (24 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
42.0
22.7
54.1
2.6
6.2
18.0
82.0
2
Kochia
19.0
6.9
36.3
2.3
12.0
44.0
44.6
3
Canada thistle
29.4
7.2
24.3
0.6
1.9
4.6
29.1
4
Downy brome
13.0
5.2
39.8
0.9
7.2
18.0
23.9
5
Field bindweed
21.2
5.7
26.9
0.6
2.6
6.0
23.5
6
Foxtail barley
22.1
2.5
11.3
0.6
2.9
15.2
19.7
7
Annual sow-thistle
21.2
3.4
16.1
0.3
1.3
4.2
16.6
8
Stinkweed
19.9
2.8
14.2
0.2
1.2
3.8
14.7
9
Wild oats
14.3
1.0
6.7
0.1
0.7
1.6
8.2
10
Quack grass
8.2
0.4
5.0
0.1
1.1
2.0
4.8
11
Wild buckwheat
4.8
1.2
25.0
0.1
2.0
2.0
4.8
12
Japanese brome
4.8
1.0
20.0
0.1
1.2
1.2
4.0
13
Shepherd's-purse
8.2
0.4
5.0
< 0.1
0.2
0.2
4.0
14
Wild mustard
4.8
1.0
20.0
< 0.1
0.8
0.8
3.8
15
Silky lupin
3.5
0.7
20.0
< 0.1
1.0
1.0
2.8
16
Narrow-leaved hawk's-beard
4.8
0.5
10.0
< 0.1
0.4
0.4
2.8
17
Lamb's-quarters
4.8
0.2
5.0
< 0.1
0.2
0.2
2.3
18
Wormseed mustard
4.8
0.2
5.0
< 0.1
0.2
0.2
2.3
19
Canola (Argentine)
4.8
0.2
5.0
< 0.1
0.2
0.2
2.3
20
Tartary buckwheat
3.5
0.2
5.0
0.1
1.6
1.6
2.2
21
Ball mustard
3.5
0.2
5.0
< 0.1
0.4
0.4
1.8
Table 105. 2009 irrigated annual crops in Cardston County (15 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Kochia
29.9
10.9
36.3
3.6
12.0
44.0
87.6
2
Field bindweed
27.9
8.7
31.2
0.8
2.8
6.0
42.2
3
Canada thistle
25.9
6.4
24.6
0.6
2.2
4.6
33.2
4
Dandelion
23.8
3.6
15.0
0.3
1.1
2.2
21.7
5
Foxtail barley
5.4
2.2
40.0
0.8
15.2
15.2
18.8
6
Stinkweed
15.0
3.4
22.5
0.3
2.0
3.8
18.1
7
Annual sow-thistle
18.4
2.0
10.9
0.3
1.4
4.2
16.0
8
Wild oats
22.4
1.5
6.7
0.2
0.7
1.6
15.3
9
Wild buckwheat
7.5
1.9
25.0
0.1
2.0
2.0
9.5
10
Wild mustard
7.5
1.5
20.0
0.1
0.8
0.8
7.4
11
Shepherd's-purse
12.9
0.6
5.0
< 0.1
0.2
0.2
7.4
12
Silky lupin
5.4
1.1
20.0
0.1
1.0
1.0
5.5
13
Quack grass
7.5
0.4
5.0
< 0.1
0.4
0.4
4.5
14
Lamb's-quarters
7.5
0.4
5.0
< 0.1
0.2
0.2
4.3
15
Wormseed mustard
7.5
0.4
5.0
< 0.1
0.2
0.2
4.3
16
Canola (Argentine)
7.5
0.4
5.0
< 0.1
0.2
0.2
4.3