Basic HTML Version
Field Survey Summary Tables – Lethbridge County
108
Table 117. 2009 irrigated cereal crops in Lethbridge County (105 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Redroot pigweed
47.4
18.4
38.8
5.3
11.2
73.4
51.4
2
Wild buckwheat
60.6
17.0
28.0
2.2
3.7
28.0
39.5
3
Wild oats
38.6
11.2
29.1
2.1
5.5
47.0
28.6
4
Kochia
36.9
8.2
22.2
1.5
4.1
89.6
22.9
5
Canola (Argentine)
25.5
9.1
35.8
1.3
5.2
36.4
20.1
6
Round-leaved mallow
36.7
8.2
22.3
0.9
2.4
28.6
20.0
7
Chickweed
9.2
2.6
28.4
3.4
37.6
206.0
19.8
8
Lamb's-quarters
34.3
7.7
22.5
1.1
3.1
34.8
19.8
9
Dandelion
32.9
6.5
19.6
0.6
1.9
13.4
16.3
10
Annual sow-thistle
14.3
4.5
31.4
0.7
4.6
27.2
10.4
11
Alfalfa
10.3
2.3
22.2
0.9
8.4
106.2
8.4
12
Canada thistle
13.2
3.3
25.0
0.4
2.9
13.2
7.8
13
Quack grass
7.9
2.9
36.6
0.8
9.5
28.4
7.8
14
Shepherd's-purse
6.5
1.9
29.5
0.2
3.7
15.8
4.4
15
Perennial sow-thistle
7.3
1.4
18.9
0.2
2.8
19.6
3.9
16
Prostrate knotweed
6.1
1.2
20.0
0.1
2.0
7.6
3.1
17
Spiny annual sow-thistle
0.7
0.7 100.0
0.4
57.6
57.6
2.7
18
Stork's-bill
6.8
0.8
11.2
< 0.1
0.5
1.6
2.5
19
Pale smartweed
5.6
0.7
12.0
< 0.1
0.8
2.0
2.1
20
Cleavers
3.1
0.9
31.0
0.1
1.9
3.6
1.8
21
Prickly lettuce
3.1
0.8
26.4
0.1
2.3
5.4
1.8
22
Field bindweed
3.1
0.6
18.6
< 0.1
1.0
1.6
1.4
23
Stinkweed
3.1
0.2
5.0
< 0.1
0.3
0.6
0.9
24
Green foxtail
1.9
0.2
11.9
< 0.1
0.9
1.0
0.7
25
Barnyard grass
0.7
0.2
25.0
< 0.1
6.2
6.2
0.5
26
Wild tomato
1.2
0.2
15.0
< 0.1
1.4
1.4
0.5
27
Corn spurry
1.2
0.1
10.0
< 0.1
0.4
0.4
0.4
28
Flixweed
1.2
0.1
5.0
< 0.1
0.2
0.2
0.3