Page 37 - Weed Survey Report for Irrigated FieldsA

Field Survey Summary Tables – Alberta
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Table 6. 2009 irrigated crops in Alberta (571 fields) (continued)
Frequency Field Uniformity Field Density (#/m2) Relative
Rank Species (%) All Occurrence All Occurrence High Abundance
53 Ball mustard 0.3 < 0.1 5.0 < 0.1 0.3 0.4 0.1
54 Prickly rose 0.2 < 0.1 20.0 < 0.1 2.2 2.2 0.1
55 Prostrate pigweed 0.2 < 0.1 15.0 < 0.1 0.6 0.6 0.1
56 Purslane 0.2 < 0.1 15.0 < 0.1 1.4 1.4 0.1
57 Bluebur 0.2 < 0.1 15.0 < 0.1 1.2 1.2 0.1
58 Oats 0.2 < 0.1 5.0 < 0.1 0.4 0.4 0.1
59 Black medick 0.2 < 0.1 5.0 < 0.1 0.2 0.2 0.1
60 Common groundsel 0.2 < 0.1 15.0 < 0.1 0.8 0.8 0.1
61 Common burdock 0.2 < 0.1 10.0 < 0.1 1.4 1.4 0.1
62 White cockle 0.2 < 0.1 5.0 < 0.1 0.2 0.2 0.1
63 Timothy 0.2 < 0.1 10.0 < 0.1 0.6 0.6 0.1
64 Silky lupin 0.1 < 0.1 20.0 < 0.1 1.0 1.0 0.1
65 Silver sagebrush 0.2 < 0.1 10.0 < 0.1 0.4 0.4 0.1
66 Rough cinquefoil 0.2 < 0.1 5.0 < 0.1 0.2 0.2 0.1
67 Wormseed mustard 0.2 < 0.1 5.0 < 0.1 0.2 0.2 0.1
68 Corn 0.1 < 0.1 10.0 < 0.1 0.4 0.4 0.1
69 Field dock 0.1 < 0.1 5.0 < 0.1 0.2 0.2 < 0.1
70 Millet 0.1 < 0.1 5.0 < 0.1 0.2 0.2 < 0.1