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Field Survey Summary Tables – Forty Mile County
105
Table 112. 2009 irrigated cereal crops in Forty Mile County (26 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild oats
73.1
12.3
16.8
0.7
1.0
3.4
57.4
2
Lamb's-quarters
61.5
9.6
15.6
0.8
1.4
12.2
53.7
3
Kochia
69.2
10.4
15.0
0.6
0.9
3.4
51.0
4
Wild buckwheat
50.0
7.3
14.6
0.4
0.8
3.0
35.0
5
Redroot pigweed
34.6
4.0
11.7
0.2
0.6
1.6
20.8
6
Canada thistle
30.8
3.5
11.3
0.2
0.7
1.2
18.7
7
Round-leaved mallow
19.2
3.7
19.0
0.2
1.0
2.2
15.9
8
Stinkweed
23.1
1.9
8.3
0.1
0.4
0.8
11.0
9
Flixweed
15.4
1.0
6.3
< 0.1
0.3
0.4
6.3
10
Dandelion
7.7
1.3
17.5
0.1
1.0
1.8
6.2
11
Cow cockle
3.8
1.3
35.0
0.1
1.8
1.8
5.1
12
Wild tomato
7.7
0.6
7.5
0.1
0.8
1.2
4.5
13
Canola (Argentine)
7.7
0.6
7.5
< 0.1
0.3
0.4
3.4
14
Green foxtail
3.8
0.6
15.0
< 0.1
1.2
1.2
3.1
15
Downy brome
3.8
0.6
15.0
< 0.1
0.6
0.6
2.5
16
Russian thistle
3.8
0.4
10.0
< 0.1
0.4
0.4
2.0
17
Perennial sow-thistle
3.8
0.2
5.0
< 0.1
0.6
0.6
1.9
18
Annual sow-thistle
3.8
0.2
5.0
< 0.1
0.2
0.2
1.4
Table 113. 2009 irrigated spring wheat in Forty Mile County (21 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Kochia
71.4
11.0
15.3
0.7
1.0
3.4
55.5
2
Wild oats
76.2
11.2
14.7
0.6
0.8
1.6
54.0
3
Lamb's-quarters
61.9
7.9
12.7
0.4
0.7
1.6
40.2
4
Wild buckwheat
57.1
7.6
13.3
0.4
0.7
3.0
38.5
5
Canada thistle
38.1
4.3
11.3
0.3
0.7
1.2
23.6
6
Redroot pigweed
33.3
3.3
10.0
0.2
0.5
0.8
18.0
7
Round-leaved mallow
19.0
3.1
16.3
0.2
1.0
2.2
15.0
8
Stinkweed
28.6
2.4
8.3
0.1
0.4
0.8
13.6
9
Flixweed
19.0
1.2
6.3
< 0.1
0.3
0.4
7.7
10
Cow cockle
4.8
1.7
35.0
0.1
1.8
1.8
6.5
11
Dandelion
4.8
1.4
30.0
0.1
1.8
1.8
6.1
12
Wild tomato
9.5
0.7
7.5
0.1
0.8
1.2
5.7
13
Green foxtail
4.8
0.7
15.0
0.1
1.2
1.2
4.0
14
Downy brome
4.8
0.7
15.0
< 0.1
0.6
0.6
3.1
15
Russian thistle
4.8
0.5
10.0
< 0.1
0.4
0.4
2.5
16
Perennial sow-thistle
4.8
0.2
5.0
< 0.1
0.6
0.6
2.3
17
Annual sow-thistle
4.8
0.2
5.0
< 0.1
0.2
0.2
1.8
18
Canola (Argentine)
4.8
0.2
5.0
< 0.1
0.2
0.2
1.8