Basic HTML Version
Field Survey Summary Tables – Ecodistrict 828
93
Table 91. 2009 irrigated cereal crops in the Foremost Plain Ecodistrict (828) in the Mixed Grassland
Ecoregion (55 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild oats
62.1
12.1
19.5
1.6
2.6
14.4
62.9
2
Kochia
63.3
12.2
19.3
1.4
2.2
14.6
60.5
3
Wild buckwheat
40.5
7.9
19.4
0.8
1.9
28.0
36.8
4
Lamb's-quarters
33.5
5.1
15.3
0.5
1.4
12.2
25.4
5
Canada thistle
27.3
3.0
10.9
0.2
0.8
2.2
16.4
6
Spiny annual sow-thistle
1.3
1.3 100.0
0.8
57.6
57.6
14.0
7
Green foxtail
6.6
1.9
29.2
0.4
6.5
13.0
11.7
8
Round-leaved mallow
18.0
2.5
13.8
0.1
0.8
2.2
11.6
9
Canola (Argentine)
15.3
2.1
13.9
0.2
1.0
2.6
10.4
10
Redroot pigweed
17.1
2.0
11.7
0.1
0.6
1.6
10.0
11
Alfalfa
4.7
1.0
21.2
0.3
7.0
19.2
8.0
12
Dandelion
10.8
1.3
12.2
0.1
0.7
1.8
6.5
13
Stinkweed
11.4
1.0
8.3
< 0.1
0.4
0.8
5.6
14
Flixweed
7.6
0.5
6.3
< 0.1
0.3
0.4
3.3
15
Field bindweed
5.1
0.3
6.7
< 0.1
0.3
0.4
2.3
16
Cow cockle
1.9
0.7
35.0
< 0.1
1.8
1.8
2.2
17
Wild tomato
3.8
0.3
7.5
< 0.1
0.8
1.2
2.0
18
Perennial sow-thistle
3.6
0.2
5.0
< 0.1
0.6
0.6
1.7
19
Pale smartweed
1.3
0.3
20.0
< 0.1
2.0
2.0
1.2
20
Downy brome
1.9
0.3
15.0
< 0.1
0.6
0.6
1.2
21
Barley
1.7
0.3
15.0
< 0.1
0.6
0.6
1.1
22
Russian thistle
1.9
0.2
10.0
< 0.1
0.4
0.4
1.0
23
Sunflower species
1.7
0.2
10.0
< 0.1
0.8
0.8
1.0
24
Goat's-beard
2.3
0.1
5.0
< 0.1
0.2
0.2
0.9
25
Wheat
1.7
0.1
5.0
< 0.1
0.6
0.6
0.8
26
Annual sow-thistle
1.9
0.1
5.0
< 0.1
0.2
0.2
0.8
27
Quack grass
1.7
0.1
5.0
< 0.1
0.4
0.4
0.7