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Field Survey Summary Tables – Moist Mixed Grassland Ecoregion
50
Table 36. 2009 irrigated grass hay in the Moist Mixed Grassland Ecoregion (13 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
49.5
33.5
67.6
7.4
15.0
47.0
136.1
2
Canada thistle
58.9
11.9
20.3
2.2
3.7
26.8
60.9
3
Redroot pigweed
18.4
5.1
27.9
0.9
5.1
11.0
23.5
4
Kochia
25.2
2.3
9.1
0.8
3.0
10.2
20.0
5
Lamb's-quarters
18.4
3.9
21.3
0.2
1.0
1.6
15.0
6
Quack grass
15.3
1.8
11.5
0.1
0.9
1.0
10.1
7
Alfalfa
13.7
0.7
5.0
< 0.1
0.2
0.2
6.7
8
Black medick
10.0
0.5
5.0
< 0.1
0.2
0.2
4.9
9
Stinkweed
10.0
0.5
5.0
< 0.1
0.2
0.2
4.9
10
Wild buckwheat
8.4
0.4
5.0
< 0.1
0.2
0.2
4.1
11
Russian thistle
8.4
0.4
5.0
< 0.1
0.2
0.2
4.1
12
Shepherd's-purse
6.8
0.3
5.0
0.1
0.8
0.8
3.7
13
Barnyard grass
5.3
0.5
10.0
< 0.1
0.6
0.6
3.2
14
Field dock
5.3
0.3
5.0
< 0.1
0.2
0.2
2.6