Basic HTML Version
Field Survey Summary Tables – Moist Mixed Grassland Ecoregion
46
Table 29. 2009 irrigated spring wheat in the Moist Mixed Grassland Ecoregion (47 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild buckwheat
56.5
22.2
39.2
2.8
5.0
25.6
49.5
2
Canola (Argentine)
39.8
17.4
43.8
2.9
7.4
36.4
41.7
3
Wild oats
48.5
12.5
25.8
2.5
5.2
47.0
37.2
4
Redroot pigweed
22.2
8.8
39.6
2.8
12.6
73.4
28.7
5
Kochia
35.3
7.5
21.1
1.8
5.1
89.6
25.4
6
Annual sow-thistle
23.8
8.2
34.3
1.4
5.9
27.2
21.0
7
Round-leaved mallow
28.1
7.5
26.7
1.1
3.8
28.6
19.7
8
Canada thistle
26.0
7.0
27.0
0.8
2.9
13.2
17.0
9
Dandelion
38.2
5.1
13.3
0.3
0.8
2.0
15.8
10
Lamb's-quarters
15.5
3.8
24.1
0.3
1.8
7.2
8.8
11
Quack grass
10.8
1.4
12.7
0.4
3.8
22.0
6.1
12
Perennial sow-thistle
4.3
1.8
42.9
0.3
8.1
19.6
4.6
13
Chickweed
9.2
1.0
10.8
0.1
1.0
2.4
3.7
14
Cleavers
5.1
1.9
37.7
0.1
2.1
2.4
3.6
15
Field bindweed
6.9
1.2
17.2
0.1
0.9
1.6
3.1
16
Foxtail barley
1.6
0.6
40.0
0.2
15.2
15.2
2.2
17
Pale smartweed
5.0
0.7
15.0
< 0.1
0.8
1.2
2.1
18
Spiny annual sow-thistle
2.5
0.7
30.0
0.2
6.2
6.2
2.1
19
Prostrate knotweed
4.3
0.7
16.9
< 0.1
0.8
1.2
1.9
20
Alfalfa
4.8
0.3
6.7
< 0.1
0.3
0.4
1.6
21
Downy brome
3.1
0.3
10.0
< 0.1
0.4
0.4
1.1
22
Narrow-leaved hawk's-beard
3.6
0.2
5.0
< 0.1
0.2
0.2
1.1
23
Green foxtail
2.6
0.3
10.0
< 0.1
1.0
1.0
1.0
24
Stork's-bill
2.6
0.1
5.0
< 0.1
0.2
0.2
0.8