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Field Survey Summary Tables – Fescue Grassland Ecoregion
42
Table 25. 2009 irrigated perennial crops in the Fescue Grassland Ecoregion (11 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
80.7
65.3
80.9
13.5
16.7
35.8
132.2
2
Stinkweed
30.8
8.7
28.1
2.7
8.8
27.0
27.0
3
Canada thistle
45.7
9.7
21.3
1.0
2.3
4.2
25.1
4
Downy brome
26.4
10.5
39.8
1.9
7.2
18.0
23.9
5
Flixweed
9.7
9.2
95.0
1.1
11.6
11.6
14.9
6
Foxtail barley
37.8
2.2
5.9
0.2
0.6
1.6
13.4
7
Annual sow-thistle
29.0
4.8
16.7
0.2
0.8
1.6
13.0
8
Shepherd's-purse
9.7
4.4
45.0
1.6
16.6
16.6
13.0
9
Narrow-leaved hawk's-beard 19.3
1.9
10.0
0.3
1.7
3.0
8.4
10
Lamb's-quarters
9.7
1.9
20.0
0.2
2.0
2.0
5.1
11
Japanese brome
9.7
1.9
20.0
0.1
1.2
1.2
4.8
12
Bluebur
9.7
1.5
15.0
0.1
1.2
1.2
4.4
13
Wild buckwheat
9.7
1.0
10.0
0.1
1.4
1.4
4.1
14
Quack grass
7.0
0.4
5.0
0.1
2.0
2.0
2.9
15
Field bindweed
7.0
0.4
5.0
0.1
1.8
1.8
2.8
16
Tartary buckwheat
7.0
0.4
5.0
0.1
1.6
1.6
2.7
17
Ball mustard
7.0
0.4
5.0
< 0.1
0.4
0.4
2.4