Basic HTML Version
Field Survey Summary Tables – Moist Mixed Grassland Ecoregion
47
Table 30. 2009 irrigated barley in the Moist Mixed Grassland Ecoregion (56 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Redroot pigweed
48.4
18.2
37.6
5.4
11.1
73.4
51.9
2
Wild oats
43.0
12.8
29.8
2.3
5.3
34.6
32.4
3
Chickweed
8.8
3.9
44.4
6.1
69.3
206.0
31.9
4
Wild buckwheat
54.3
12.2
22.5
1.4
2.6
17.2
30.9
5
Kochia
39.0
9.0
23.1
2.0
5.1
44.0
26.4
6
Lamb's-quarters
41.0
10.0
24.5
1.4
3.5
34.8
25.6
7
Canola (Argentine)
19.7
8.1
40.8
1.0
5.0
19.8
16.7
8
Round-leaved mallow
33.3
4.5
13.4
0.4
1.1
5.0
13.8
9
Dandelion
24.8
4.7
19.0
0.4
1.5
7.0
12.0
10
Alfalfa
10.9
2.8
25.8
1.5
13.7
106.2
11.7
11
Shepherd's-purse
9.2
2.9
31.4
0.4
4.0
15.8
6.6
12
Canada thistle
13.4
2.1
15.6
0.2
1.5
5.0
6.1
13
Quack grass
6.4
2.1
32.2
0.4
6.1
13.0
5.2
14
Prostrate knotweed
9.2
1.7
18.4
0.2
2.2
7.6
4.7
15
Annual sow-thistle
8.8
2.0
22.5
0.1
1.6
4.2
4.6
16
Perennial sow-thistle
9.6
1.0
10.4
0.1
0.9
2.2
3.6
17
Prickly lettuce
5.5
1.4
26.4
0.1
2.3
5.4
3.2
18
Stinkweed
8.8
0.8
8.8
< 0.1
0.6
1.6
3.1
19
Stork's-bill
5.6
0.4
7.3
< 0.1
0.3
0.6
1.8
20
Cleavers
3.4
0.8
22.4
0.1
1.5
3.6
1.8
21
Pale smartweed
4.7
0.3
7.2
< 0.1
0.6
1.0
1.6
22
Barnyard grass
1.3
0.3
25.0
0.1
6.2
6.2
1.0
23
Wild tomato
2.1
0.3
15.0
< 0.1
1.4
1.4
0.9
24
Field bindweed
2.1
0.2
10.0
< 0.1
0.4
0.4
0.7
25
Corn spurry
2.1
0.2
10.0
< 0.1
0.4
0.4
0.7
26
Flixweed
2.1
0.1
5.0
< 0.1
0.2
0.2
0.6
27
Silky lupin
1.2
0.2
20.0
< 0.1
1.0
1.0
0.6
Table 31. 2009 irrigated corn in the Moist Mixed Grassland Ecoregion (17 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Redroot pigweed
82.2
27.6
33.5
6.5
7.9
55.8
87.2
2
Round-leaved mallow
60.2
19.3
32.1
1.5
2.5
11.0
40.6
3
Wild buckwheat
59.4
14.1
23.7
1.3
2.2
11.8
33.9
4
Dandelion
51.6
10.1
19.7
1.1
2.2
13.4
27.7
5
Quack grass
17.8
7.6
42.8
2.1
11.9
28.4
25.2
6
Kochia
40.6
7.7
18.9
0.6
1.5
4.8
19.6
7
Lamb's-quarters
35.6
3.6
10.2
0.3
0.8
2.0
12.7
8
Alfalfa
20.3
4.1
20.0
0.3
1.3
3.6
9.8
9
Annual sow-thistle
19.6
2.6
13.3
0.1
0.7
1.4
7.3
10
Wild oats
11.0
3.5
31.6
0.2
1.6
2.8
6.7
11
Field bindweed
14.8
2.6
17.3
0.2
1.1
1.2
6.5
12
Chickweed
13.5
1.4
10.0
0.1
0.4
0.4
4.4
13
Stork's-bill
13.5
1.4
10.0
0.1
0.4
0.6
4.4
14
Green foxtail
12.3
1.0
8.5
0.1
0.4
0.8
3.8
15
Canola (Argentine)
11.0
0.8
6.9
< 0.1
0.3
0.4
3.2
16
Canada thistle
8.0
0.8
10.0
< 0.1
0.4
0.4
2.6
17
Oats
8.0
0.4
5.0
< 0.1
0.4
0.4
2.2
18
Shepherd's-purse
6.8
0.7
10.0
< 0.1
0.4
0.4
2.2