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Field Survey Summary Tables – Ecodistrict 818
84
Table 79. 2009 irrigated annual crops in the Bow City Plain Ecodistrict (818) in the Mixed Grassland
Ecoregion (12 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild oats
41.6
16.7
40.2
5.5
13.2
49.2
46.4
2
Wheat
27.2
17.7
65.0
4.3
15.7
30.0
38.4
3
Wild buckwheat
75.3
17.7
23.5
1.6
2.1
7.8
31.6
4
Lamb's-quarters
66.3
12.9
19.4
1.0
1.5
4.8
23.7
5
Dandelion
57.2
13.2
23.0
1.1
1.9
8.4
23.0
6
Redroot pigweed
58.4
9.4
16.1
0.8
1.4
5.0
19.2
7
Kochia
66.3
8.2
12.4
0.4
0.5
1.0
17.3
8
Alfalfa
48.1
7.9
16.5
0.4
0.9
2.4
14.7
9
Canola (Argentine)
18.1
10.0
55.0
0.9
4.9
6.0
14.0
10
Barnyard grass
15.6
8.6
55.0
1.0
6.4
7.8
13.4
11
Shepherd's-purse
18.1
6.8
37.5
0.7
3.8
4.2
10.9
12
Quack grass
32.5
4.4
13.6
0.3
1.0
1.4
9.5
13
Canada thistle
33.8
3.9
11.5
0.2
0.6
1.0
8.7
14
Round-leaved mallow
16.9
4.4
25.8
0.4
2.4
5.0
7.6
15
Green foxtail
15.6
2.7
17.5
0.2
1.1
1.2
5.1
16
Pale smartweed
16.9
1.2
7.3
< 0.1
0.3
0.4
3.6
17
Flixweed
16.9
0.8
5.0
< 0.1
0.2
0.2
3.3
18
Prickly lettuce
7.8
1.2
15.0
0.1
0.8
0.8
2.3
19
Narrow-leaved hawk's-beard
7.8
1.2
15.0
< 0.1
0.6
0.6
2.2
20
Downy brome
9.1
0.5
5.0
< 0.1
0.4
0.4
1.9
21
Foxtail barley
9.1
0.5
5.0
< 0.1
0.2
0.2
1.8
22
Stinkweed
9.1
0.5
5.0
< 0.1
0.2
0.2
1.8