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Field Survey Summary Tables – St. Mary River Irrigation District
159
Table 190. 2009 irrigated dry beans in St. Mary River Irrigation District (11 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild oats
26.5
7.7
29.0
0.5
2.0
4.8
57.7
2
Kochia
45.1
4.7
10.3
0.3
0.6
1.2
49.1
3
Wild buckwheat
36.3
5.0
13.7
0.2
0.6
1.6
43.4
4
Annual sow-thistle
6.8
4.4
65.0
0.3
4.8
4.8
29.6
5
Canola (Argentine)
6.8
2.7
40.0
0.3
4.8
4.8
24.6
6
Canada thistle
15.5
1.1
7.2
0.2
1.6
1.8
21.4
7
Lamb's-quarters
6.8
2.4
35.0
0.3
3.8
3.8
20.9
8
Round-leaved mallow
9.8
2.0
20.0
0.1
1.0
1.0
15.0
9
Cleavers
6.8
2.0
30.0
0.1
1.8
1.8
14.5
10
Prostrate pigweed
9.8
1.5
15.0
0.1
0.6
0.6
12.0
11
Green foxtail
6.8
0.3
5.0
< 0.1
0.6
0.6
6.3
12
Redroot pigweed
6.8
0.3
5.0
< 0.1
0.2
0.2
5.2
Table 191. 2009 irrigated potatoes in St. Mary River Irrigation District (10 fields)
Frequency Field Uniformity
Field Density (#/m
2
)
Relative
Rank Species
(%)
All Occurrence All Occurrence High Abundance
1
Wild buckwheat
49.5
5.6
11.3
0.3
0.5
1.4
82.6
2
Kochia
43.6
2.7
6.2
0.1
0.2
0.4
47.2
3
Round-leaved mallow
21.1
2.1
10.0
0.1
0.7
0.8
38.0
4
Lamb's-quarters
28.4
1.8
6.4
0.1
0.3
0.4
31.4
5
Canada thistle
18.8
2.0
10.6
0.1
0.4
0.6
28.7
6
Downy brome
10.6
0.5
5.0
0.1
1.2
1.2
21.8
7
Corn
8.2
0.8
10.0
< 0.1
0.4
0.4
12.0
8
Dandelion
10.6
0.5
5.0
< 0.1
0.2
0.2
10.1
9
Goat's-beard
10.6
0.5
5.0
< 0.1
0.2
0.2
10.1
10
Redroot pigweed
10.6
0.5
5.0
< 0.1
0.2
0.2
10.1
11
Wild tomato
8.2
0.4
5.0
< 0.1
0.2
0.2
7.9