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Field Survey Summary Tables – Fescue Grassland Ecoregion
40
Table 22. 2009 irrigated crops in the Fescue Grassland Ecoregion (28 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
45.2
22.8
50.5
4.5
10.0
35.8
81.6
2
Wild buckwheat
28.0
5.4
19.4
0.6
2.2
8.0
21.8
3
Stinkweed
13.3
4.1
31.0
1.0
7.6
27.0
18.0
4
Canola (Argentine)
5.4
5.4 100.0
1.1
20.8
20.8
17.9
5
Lamb's-quarters
17.2
4.0
23.5
0.3
1.9
4.4
13.8
6
Downy brome
8.7
3.5
39.8
0.6
7.2
18.0
12.5
7
Wild oats
16.2
2.7
16.7
0.4
2.3
6.4
12.2
8
Canada thistle
15.0
3.2
21.3
0.3
2.3
4.2
12.2
9
Barley
3.2
2.4
75.0
0.9
28.0
28.0
11.3
10
Shepherd's-purse
11.8
1.9
15.8
0.5
4.6
16.6
10.9
11
Annual sow-thistle
20.5
2.1
10.4
0.1
0.5
1.6
10.8
12
Field bindweed
11.0
3.0
27.5
0.3
2.9
6.0
10.4
13
Kochia
14.0
2.3
16.6
0.1
1.0
2.2
9.0
14
Chickweed
5.4
2.4
45.0
0.4
8.2
8.2
8.6
15
Flixweed
3.2
3.0
95.0
0.4
11.6
11.6
8.0
16
Hemp-nettle
5.4
2.4
45.0
0.2
4.6
4.6
7.0
17
Foxtail barley
12.4
0.7
5.9
0.1
0.6
1.6
5.9
18
Cleavers
8.6
1.0
11.9
0.1
1.1
2.0
5.1
19
Narrow-leaved hawk's-beard
6.4
0.6
10.0
0.1
1.7
3.0
3.9
20
Stork's-bill
5.4
0.5
10.0
0.1
1.2
1.2
3.1
21
Round-leaved mallow
5.4
0.3
5.0
< 0.1
0.2
0.2
2.3
22
Russian thistle
5.4
0.3
5.0
< 0.1
0.2
0.2
2.3
23
Japanese brome
3.2
0.6
20.0
< 0.1
1.2
1.2
2.2
24
Wild mustard
3.2
0.6
20.0
< 0.1
0.8
0.8
2.1
25
Bluebur
3.2
0.5
15.0
< 0.1
1.2
1.2
2.0
26
Wormseed mustard
3.2
0.2
5.0
< 0.1
0.2
0.2
1.4
27
Quack grass
2.3
0.1
5.0
< 0.1
2.0
2.0
1.3
28
Tartary buckwheat
2.3
0.1
5.0
< 0.1
1.6
1.6
1.3
29
Ball mustard
2.3
0.1
5.0
< 0.1
0.4
0.4
1.0