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Field Survey Summary Tables – Moist Mixed Grassland Ecoregion
48
Table 32. 2009 irrigated broad-leaved annual crops in the Moist Mixed Grassland Ecoregion (21 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Kochia
47.2
7.7
16.3
0.5
1.0
3.2
35.8
2
Lamb's-quarters
19.3
7.6
39.1
0.6
3.2
7.2
31.2
3
Redroot pigweed
50.3
5.2
10.4
0.3
0.5
1.4
28.0
4
Wild oats
20.8
6.5
31.5
0.5
2.5
4.8
27.7
5
Wheat
9.1
4.6
49.8
0.8
8.8
13.4
27.4
6
Annual sow-thistle
31.0
6.1
19.6
0.4
1.2
4.8
26.2
7
Canada thistle
28.7
4.9
17.0
0.3
1.1
4.6
23.0
8
Wild buckwheat
34.1
3.3
9.8
0.2
0.5
1.6
18.8
9
Dandelion
13.5
3.1
22.9
0.2
1.4
2.6
12.9
10
Cleavers
9.1
2.5
26.9
0.1
1.3
1.8
9.1
11
Round-leaved mallow
22.4
1.1
5.0
< 0.1
0.2
0.2
9.0
12
Shepherd's-purse
16.7
1.1
6.7
0.1
0.7
1.4
8.9
13
Russian thistle
5.6
1.7
30.0
0.2
3.4
3.4
8.4
14
Canola (Argentine)
3.5
1.4
40.0
0.2
4.8
4.8
6.9
15
Quack grass
14.7
0.9
6.2
0.1
0.4
0.6
6.7
16
Stinkweed
11.2
1.2
10.9
0.1
0.6
0.8
6.4
17
Barley
6.7
1.3
20.0
0.1
1.2
1.2
5.7
18
Chickweed
3.5
0.5
15.0
< 0.1
0.6
0.6
2.3
19
Corn spurry
5.6
0.3
5.0
< 0.1
0.2
0.2
2.3
20
Green foxtail
3.5
0.2
5.0
< 0.1
0.6
0.6
1.7
21
Millet
3.5
0.2
5.0
< 0.1
0.2
0.2
1.4
Table 33. 2009 irrigated canola in the Moist Mixed Grassland Ecoregion (18 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Kochia
44.9
8.0
17.8
0.5
1.1
3.2
42.1
2
Wheat
6.3
4.7
75.0
0.8
13.4
13.4
32.4
3
Lamb's-quarters
13.7
6.9
50.2
0.5
3.9
7.2
31.3
4
Redroot pigweed
44.4
5.1
11.4
0.3
0.6
1.4
30.1
5
Canada thistle
32.1
5.5
17.0
0.4
1.1
4.6
29.9
6
Annual sow-thistle
30.8
4.2
13.7
0.2
0.7
1.2
23.1
7
Wild oats
15.3
4.1
27.1
0.3
2.3
3.8
21.6
8
Wild buckwheat
26.3
1.9
7.4
0.1
0.4
0.6
14.6
9
Shepherd's-purse
18.6
1.2
6.7
0.1
0.7
1.4
11.5
10
Russian thistle
6.3
1.9
30.0
0.2
3.4
3.4
11.0
11
Round-leaved mallow
21.2
1.1
5.0
< 0.1
0.2
0.2
9.7
12
Dandelion
11.1
1.7
15.0
0.1
1.0
2.2
9.5
13
Stinkweed
12.5
1.4
10.9
0.1
0.6
0.8
8.3
14
Barley
7.4
1.5
20.0
0.1
1.2
1.2
7.5
15
Cleavers
6.3
1.6
25.0
0.1
1.0
1.0
6.6
16
Quack grass
12.5
0.6
5.0
< 0.1
0.3
0.4
6.0
17
Corn spurry
6.3
0.3
5.0
< 0.1
0.2
0.2
2.9
18
Millet
4.0
0.2
5.0
< 0.1
0.2
0.2
1.8