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Field Survey Summary Tables – Mixed Grassland Ecoregion
60
Table 46. 2009 irrigated potatoes in the Mixed Grassland Ecoregion (19 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Lamb's-quarters
30.8
2.8
9.2
0.1
0.4
0.8
43.6
2
Wild buckwheat
25.4
2.9
11.3
0.1
0.5
1.4
40.6
3
Kochia
27.8
1.7
6.0
0.1
0.2
0.4
29.4
4
Canola (Argentine)
10.8
1.9
17.5
0.1
0.8
1.0
23.8
5
Wheat
5.4
1.1
20.0
0.1
2.0
2.0
18.8
6
Round-leaved mallow
10.8
1.1
10.0
0.1
0.7
0.8
18.5
7
Redroot pigweed
16.3
0.8
5.0
< 0.1
0.2
0.2
15.7
8
Purslane
5.4
0.8
15.0
0.1
1.4
1.4
14.3
9
Canada thistle
9.6
1.0
10.6
< 0.1
0.4
0.6
14.2
10
Barnyard grass
5.4
0.8
15.0
0.1
1.2
1.2
13.3
11
Common groundsel
5.4
0.8
15.0
< 0.1
0.8
0.8
11.2
12
Downy brome
5.4
0.3
5.0
0.1
1.2
1.2
10.4
13
Wild oats
5.4
0.8
15.0
< 0.1
0.6
0.6
10.2
14
Alfalfa
5.4
0.8
15.0
< 0.1
0.6
0.6
10.2
15
Corn
4.2
0.4
10.0
< 0.1
0.4
0.4
6.0
16
Dandelion
5.4
0.3
5.0
< 0.1
0.2
0.2
5.2
17
Flixweed
5.4
0.3
5.0
< 0.1
0.2
0.2
5.2
18
Goat's-beard
5.4
0.3
5.0
< 0.1
0.2
0.2
5.2
19
Wild tomato
4.2
0.2
5.0
< 0.1
0.2
0.2
4.1
Table 47. 2009 irrigated sugar beets in the Mixed Grassland Ecoregion (15 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Barnyard grass
13.3
7.3
55.0
0.9
6.4
7.8
55.9
2
Redroot pigweed
20.0
6.7
33.3
0.5
2.5
5.0
45.2
3
Lamb's-quarters
20.0
5.3
26.7
0.4
2.0
3.8
38.5
4
Round-leaved mallow
14.2
5.2
36.8
0.4
2.9
5.0
35.4
5
Alfalfa
13.3
3.7
27.5
0.2
1.6
2.4
24.1
6
Wild buckwheat
20.8
2.9
13.8
0.1
0.6
1.0
23.1
7
Canola (Argentine)
20.0
2.3
11.7
0.1
0.5
0.6
20.0
8
Wheat
5.2
1.3
25.0
0.1
2.4
2.4
10.5
9
Kochia
13.3
0.7
5.0
< 0.1
0.2
0.2
9.8
10
Foxtail barley
7.5
0.8
10.0
< 0.1
0.4
0.4
7.0
11
Pale smartweed
6.7
0.7
10.0
< 0.1
0.4
0.4
6.2
12
Dandelion
6.7
0.3
5.0
< 0.1
0.2
0.2
4.9
13
Green foxtail
6.7
0.3
5.0
< 0.1
0.2
0.2
4.9
14
Quack grass
6.7
0.3
5.0
< 0.1
0.2
0.2
4.9
15
Stinkweed
6.7
0.3
5.0
< 0.1
0.2
0.2
4.9
16
Canada thistle
6.7
0.3
5.0
< 0.1
0.2
0.2
4.9