| Percent corn yield reduction 1 | Percent soybean yield reduction 1 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 6 | 8 | 10 | 1 | 2 | 4 | 6 | 8 | 10 | ||
| Weeds per 100 feet of row | Weeds per 100 feet of row | ||||||||||||
| Cocklebur | 4 | 8 | 16 | 28 | 34 | 40 | 1 | 2 | 4 | 6 | 8 | 10 | |
| Pigweed or lambsquarters | 12 | 25 | 50 | 100 | 125 | 150 | 2 | 4 | 6 | 10 | 15 | 20 | |
| Shattercane (5-8/clump) | 6 | 12 | 25 | 50 | 75 | 100 | 2 | 5 | 8 | 11 | 14 | 17 | |
| Giant foxtail | 15 | 30 | 60 | 85 | 175 | 400 | 15 | 25 | 80 | 300 | 400 | 600 | |
| Velvetleaf | 10 | 15 | 20 | 30 | 40 | 50 | 1 | 3 | 6 | 10 | 13 | 16 | |
| Smartweed | --2 | -- | -- | -- | -- | -- | 2 | 4 | 6 | 10 | 15 | 20 | |
| Yellow nutsedge | 400 | 800 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | |
| Volunteer corn | -- | -- | -- | -- | -- | -- | 1 | 2 | 3 | 4 | 5 | 6 | |
| 1 Interference data are from Stoller et al., 1985, Reviews of Weed Science; E. L. Knake and F. W. Slife, 1962, Weeds 10:26; and E. L. Werner and W. S. Curran, 1995, Proc. NEWSS 49:23. 2 Dash (--) signifies that no data were available. |
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