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Field Survey Summary Tables – Alberta
30
Table 10. 2009 irrigated barley in Alberta (107 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Redroot pigweed
35.1
12.7
36.1
4.0
11.3
73.4
44.1
2
Wild oats
47.1
13.8
29.3
2.4
5.0
34.6
39.7
3
Wild buckwheat
52.0
11.5
22.2
1.1
2.1
17.2
31.5
4
Kochia
41.5
9.6
23.1
1.6
3.8
44.0
29.5
5
Lamb's-quarters
33.7
9.4
28.0
1.7
5.0
35.8
27.7
6
Chickweed
6.1
2.7
44.6
3.3
54.4
206.0
22.3
7
Dandelion
22.7
4.0
17.8
0.3
1.5
7.4
12.0
8
Canola (Argentine)
12.0
4.7
39.3
0.5
4.6
19.8
11.1
9
Alfalfa
9.5
2.7
28.2
1.0
10.4
106.2
10.6
10
Round-leaved mallow
20.2
2.6
13.0
0.2
1.0
5.0
9.1
11
Canada thistle
17.9
2.4
13.6
0.3
1.7
10.0
8.9
12
Green foxtail
9.8
2.0
20.8
0.3
3.4
28.8
6.5
13
Shepherd's-purse
7.4
2.0
27.4
0.2
3.0
15.8
5.3
14
Stinkweed
9.7
1.7
17.6
0.1
1.4
3.8
5.1
15
Quack grass
6.1
1.5
25.4
0.3
5.1
13.0
4.9
16
Perennial sow-thistle
7.9
1.6
20.0
0.2
2.7
15.6
4.8
17
Annual sow-thistle
8.7
1.2
14.1
0.1
1.0
4.2
4.0
18
Prostrate knotweed
4.8
0.9
18.4
0.1
2.2
7.6
2.7
19
Pale smartweed
5.4
0.5
9.6
0.1
1.1
3.8
2.3
20
Persian darnel
1.0
1.0 100.0
0.2
15.2
15.2
2.2
21
Field bindweed
2.6
0.8
31.7
0.1
3.0
6.0
2.0
22
Prickly lettuce
2.8
0.7
26.4
0.1
2.3
5.4
1.9
23
Wild mustard
1.9
0.9
49.5
0.1
3.4
5.6
1.8
24
Hemp-nettle
1.5
0.7
45.0
0.1
4.6
4.6
1.5
25
White mustard
0.9
0.5
60.0
0.1
9.4
9.4
1.2
26
Stork's-bill
2.9
0.2
7.3
< 0.1
0.3
0.6
1.0
27
Cleavers
1.8
0.4
22.4
< 0.1
1.5
3.6
1.0
28
Barnyard grass
1.7
0.2
13.0
< 0.1
2.7
6.2
0.9
29
Tartary buckwheat
2.0
0.2
7.5
< 0.1
1.0
1.4
0.8
30
Wild tomato
1.1
0.2
15.0
< 0.1
1.4
1.4
0.5
31
Foxtail barley
1.0
0.2
15.0
< 0.1
1.2
1.2
0.5
32
Corn spurry
1.1
0.1
10.0
< 0.1
0.4
0.4
0.4
33
Sunflower species
0.9
0.1
10.0
< 0.1
0.8
0.8
0.4
34
Flixweed
1.1
0.1
5.0
< 0.1
0.2
0.2
0.3
35
Smooth brome
1.0
0.1
5.0
< 0.1
0.4
0.4
0.3
36
Silky lupin
0.6
0.1
20.0
< 0.1
1.0
1.0
0.3
37
Wheat
0.9
< 0.1
5.0
< 0.1
0.4
0.4
0.3
38
Wormseed mustard
0.9
< 0.1
5.0
< 0.1
0.2
0.2
0.3
39
Russian thistle
0.9
< 0.1
5.0
< 0.1
0.2
0.2
0.3