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Field Survey Summary Tables – Ecodistrict 823
87
Table 82. 2009 irrigated cereal crops in the Vauxhall Plain Ecodistrict (823) in the Mixed Grassland
Ecoregion (39 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild oats
48.5
13.0
26.9
1.9
3.8
33.6
57.4
2
Wild buckwheat
47.0
9.8
20.9
0.9
1.8
12.4
40.0
3
Green foxtail
20.3
6.0
29.7
1.0
4.9
28.8
27.5
4
Kochia
31.2
6.5
20.8
0.5
1.6
5.0
25.5
5
Perennial sow-thistle
11.1
5.7
51.4
0.9
7.9
15.6
22.6
6
Canada thistle
27.8
2.3
8.1
0.1
0.5
1.4
14.1
7
Lamb's-quarters
10.9
2.5
22.7
0.4
3.6
11.8
12.0
8
Stinkweed
11.5
3.3
28.8
0.3
2.3
4.6
11.8
9
Persian darnel
5.8
3.0
52.5
0.4
7.7
15.2
11.7
10
Dandelion
5.6
2.8
49.8
0.4
6.6
11.0
10.3
11
Redroot pigweed
18.4
1.3
7.0
0.1
0.7
1.6
9.5
12
Canola (Argentine)
10.4
2.1
20.4
0.1
1.1
2.2
7.8
13
Wild mustard
2.9
2.2
75.0
0.2
5.6
5.6
6.0
14
White mustard
2.5
1.5
60.0
0.2
9.4
9.4
5.8
15
Foxtail barley
8.3
1.0
11.5
0.1
1.0
1.6
5.1
16
Alfalfa
5.6
1.3
22.9
0.1
1.3
2.6
4.5
17
Prickly lettuce
2.5
1.2
50.0
0.1
3.6
3.6
3.7
18
Quack grass
2.9
0.9
30.0
0.1
3.6
3.6
3.5
19
Spiny annual sow-thistle
2.5
1.0
40.0
0.1
3.6
3.6
3.3
20
Round-leaved mallow
5.0
0.7
15.0
< 0.1
1.0
1.4
3.3
21
Shepherd's-purse
3.1
0.8
25.0
0.1
3.0
3.0
3.2
22
Tartary buckwheat
5.8
0.4
7.5
0.1
1.0
1.4
3.2
23
Stork's-bill
3.1
0.8
25.0
< 0.1
1.6
1.6
2.7
24
Russian thistle
2.9
0.4
15.0
< 0.1
1.2
1.2
2.0
25
Smooth brome
2.9
0.1
5.0
< 0.1
0.4
0.4
1.3
26
Barnyard grass
2.9
0.1
5.0
< 0.1
0.4
0.4
1.3
27
Flixweed
2.5
0.1
5.0
< 0.1
0.2
0.2
1.1