Basic HTML Version
Field Survey Summary Tables – Ecodistrict 828
91
Table 89. 2009 irrigated fields in the Foremost Plain Ecodistrict (828) in the Mixed Grassland Ecoregion
(111 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
16.9
6.8
40.1
2.3
13.5
73.8
55.3
2
Kochia
51.6
8.0
15.5
0.8
1.6
14.6
48.4
3
Wild oats
35.9
6.8
18.8
0.8
2.3
14.4
40.4
4
Wild buckwheat
33.1
6.3
19.1
0.5
1.6
28.0
33.8
5
Lamb's-quarters
23.0
3.1
13.6
0.3
1.1
12.2
19.1
6
Canada thistle
19.8
2.5
12.9
0.3
1.3
7.0
16.7
7
Round-leaved mallow
17.5
2.9
16.5
0.2
1.0
2.4
15.3
8
Spiny annual sow-thistle
0.7
0.7 100.0
0.4
57.6
57.6
7.3
9
Canola (Argentine)
8.6
1.2
14.0
0.1
1.0
2.6
7.0
10
Green foxtail
3.3
1.0
29.2
0.2
6.5
13.0
6.5
11
Redroot pigweed
8.5
1.0
11.7
0.1
0.6
1.6
6.1
12
Foxtail barley
3.5
0.6
18.5
0.2
4.6
12.8
5.1
13
Field bindweed
4.5
0.6
14.2
0.1
2.1
6.2
4.5
14
Alfalfa
2.3
0.5
21.2
0.2
7.0
19.2
4.4
15
Stinkweed
6.6
0.5
7.9
< 0.1
0.3
0.8
3.9
16
Wheat
2.3
0.5
21.4
0.1
3.8
8.0
3.3
17
Perennial sow-thistle
3.0
0.4
14.9
0.1
2.2
4.6
3.0
18
Wild tomato
4.5
0.3
7.1
< 0.1
0.8
1.4
2.9
19
Sunflower species
2.5
0.3
13.3
< 0.1
1.1
1.6
2.1
20
Flixweed
3.8
0.2
6.3
< 0.1
0.3
0.4
2.1
21
Quack grass
2.0
0.2
10.8
< 0.1
0.9
1.2
1.5
22
Cow cockle
0.9
0.3
35.0
< 0.1
1.8
1.8
1.3
23
Downy brome
1.8
0.2
10.3
< 0.1
0.9
1.2
1.3
24
White clover
1.7
0.2
10.0
< 0.1
0.5
0.6
1.1
25
Russian thistle
1.9
0.1
7.5
< 0.1
0.3
0.4
1.1
26
Goat's-beard
2.0
0.1
5.0
< 0.1
0.2
0.2
1.0
27
Yellow sweet-clover
0.8
0.2
20.0
< 0.1
1.4
1.4
0.9
28
Prostrate pigweed
0.9
0.1
15.0
< 0.1
0.6
0.6
0.7
29
Pale smartweed
0.7
0.1
20.0
< 0.1
2.0
2.0
0.7
30
Barley
0.8
0.1
15.0
< 0.1
0.6
0.6
0.7
31
Broad-leaved plantain
1.2
0.1
5.0
< 0.1
0.4
0.4
0.6
32
Prickly lettuce
1.2
0.1
5.0
< 0.1
0.2
0.2
0.6
33
Showy milkweed
0.8
0.1
10.0
< 0.1
0.8
0.8
0.6
34
Annual sow-thistle
0.9
< 0.1
5.0
< 0.1
0.2
0.2
0.5
35
Corn
0.7
0.1
10.0
< 0.1
0.4
0.4
0.4