Basic HTML Version
Field Survey Summary Tables – Alberta
38
Table 19. 2009 irrigated grass hay in Alberta (46 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Dandelion
67.5
37.6
55.7
9.3
13.8
51.6
141.5
2
Canada thistle
42.4
7.9
18.6
1.0
2.5
26.8
33.8
3
Foxtail barley
19.2
2.9
15.3
0.5
2.7
12.8
14.7
4
Stinkweed
8.1
1.9
23.8
0.6
7.2
27.0
9.6
5
Kochia
16.4
1.2
7.6
0.3
1.5
10.2
9.5
6
Lamb's-quarters
12.0
2.1
17.9
0.1
1.1
2.0
8.3
7
Redroot pigweed
7.6
1.6
21.7
0.3
3.9
11.0
7.1
8
Wild buckwheat
8.7
1.8
20.4
0.1
1.5
3.8
6.6
9
Downy brome
3.6
1.7
48.4
0.4
10.7
18.0
6.3
10
Pasture sage
4.1
2.3
55.0
0.2
5.7
6.8
6.2
11
White sweet-clover
4.1
1.9
45.0
0.2
5.0
8.0
5.5
12
Shepherd's-purse
4.1
1.0
25.0
0.4
8.7
16.6
5.4
13
Flixweed
2.1
2.0
95.0
0.2
11.6
11.6
5.1
14
Annual sow-thistle
6.2
1.0
16.7
< 0.1
0.8
1.6
4.0
15
Smooth brome
4.1
0.9
22.5
0.1
1.6
2.0
3.2
16
Quack grass
4.6
0.5
11.5
< 0.1
0.9
1.0
2.7
17
Narrow-leaved hawk's-beard
4.1
0.4
10.0
0.1
1.7
3.0
2.6
18
Yellow sweet-clover
4.1
0.5
12.5
< 0.1
1.2
2.0
2.6
19
Russian thistle
4.6
0.2
5.0
< 0.1
0.2
0.2
2.1
20
Goat's-beard
4.1
0.3
7.5
< 0.1
0.4
0.4
2.1
21
White clover
4.1
0.3
7.5
< 0.1
0.4
0.6
2.1
22
Alfalfa
4.1
0.2
5.0
< 0.1
0.2
0.2
1.9
23
Wild oats
2.3
0.5
20.0
< 0.1
1.0
1.0
1.7
24
Prickly rose
2.1
0.4
20.0
< 0.1
2.2
2.2
1.6
25
Japanese brome
2.1
0.4
20.0
< 0.1
1.2
1.2
1.5
26
Canola (Argentine)
2.3
0.3
15.0
< 0.1
0.8
0.8
1.5
27
Spiny annual sow-thistle
2.1
0.3
15.0
< 0.1
1.4
1.4
1.4
28
Black medick
3.0
0.2
5.0
< 0.1
0.2
0.2
1.4
29
Bluebur
2.1
0.3
15.0
< 0.1
1.2
1.2
1.4
30
Rough cinquefoil
2.4
0.1
5.0
< 0.1
0.2
0.2
1.1
31
Broad-leaved plantain
2.1
0.1
5.0
< 0.1
0.2
0.2
0.9
32
Bull thistle
2.1
0.1
5.0
< 0.1
0.2
0.2
0.9
33
Barnyard grass
1.6
0.2
10.0
< 0.1
0.6
0.6
0.9
34
Field bindweed
1.5
0.1
5.0
< 0.1
1.8
1.8
0.8
35
Tartary buckwheat
1.5
0.1
5.0
< 0.1
1.6
1.6
0.8
36
Field dock
1.6
0.1
5.0
< 0.1
0.2
0.2
0.7
37
Ball mustard
1.5
0.1
5.0
< 0.1
0.4
0.4
0.7