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Field Survey Summary Tables – Vulcan County
129
Table 148. 2009 irrigated cereal crops in Vulcan County (12 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild oats
41.7
16.7
40.0
5.3
12.8
49.2
37.8
2
Wild buckwheat
83.3
22.9
27.5
2.1
2.5
7.8
34.6
3
Canola (Argentine)
41.7
22.9
55.0
2.7
6.5
15.4
30.6
4
Wheat
25.0
16.3
65.0
3.9
15.7
30.0
29.1
5
Perennial sow-thistle
25.0
15.8
63.3
2.5
10.0
15.6
23.1
6
Stinkweed
41.7
10.0
24.0
0.8
1.9
4.6
15.4
7
Kochia
41.7
9.2
22.0
0.8
1.8
5.0
14.8
8
Persian darnel
16.7
8.8
52.5
1.3
7.7
15.2
12.8
9
Lamb's-quarters
33.3
5.4
16.3
0.5
1.4
4.8
10.2
10
Dandelion
16.7
7.1
42.5
0.8
4.5
8.4
9.7
11
Redroot pigweed
33.3
3.3
10.0
0.4
1.3
3.0
8.9
12
Shepherd's-purse
16.7
6.3
37.5
0.6
3.8
4.2
8.7
13
Canada thistle
33.3
4.2
12.5
0.2
0.7
1.0
8.5
14
Wild mustard
8.3
6.3
75.0
0.5
5.6
5.6
6.8
15
Quack grass
16.7
3.3
20.0
0.4
2.4
3.6
6.1
16
Foxtail barley
25.0
2.1
8.3
0.1
0.5
1.2
5.6
17
Spiny annual sow-thistle
8.3
2.5
30.0
0.5
6.2
6.2
4.8
18
Chickweed
16.7
2.1
12.5
0.3
1.5
2.4
4.8
19
Tartary buckwheat
16.7
1.3
7.5
0.2
1.0
1.4
4.0
20
Annual sow-thistle
16.7
1.3
7.5
0.2
0.9
1.6
3.9
21
Cleavers
8.3
2.5
30.0
0.2
1.8
1.8
3.3
22
Russian thistle
8.3
1.3
15.0
0.1
1.2
1.2
2.4
23
Green foxtail
8.3
1.3
15.0
0.1
0.6
0.6
2.2
24
Alfalfa
8.3
0.8
10.0
0.1
0.6
0.6
2.0
25
Downy brome
8.3
0.4
5.0
< 0.1
0.4
0.4
1.7
26
Smooth brome
8.3
0.4
5.0
< 0.1
0.4
0.4
1.7
27
Barnyard grass
8.3
0.4
5.0
< 0.1
0.4
0.4
1.7
28
Flixweed
8.3
0.4
5.0
< 0.1
0.2
0.2
1.6
29
Round-leaved mallow
8.3
0.4
5.0
< 0.1
0.2
0.2
1.6
30
Pale smartweed
8.3
0.4
5.0
< 0.1
0.2
0.2
1.6