Table 2.5-2. Relative effectiveness of “burndown” treatments for no-till small grains
- Table compares the relative effectiveness of herbicides on individual weeds. Ratings are based on labeled application rates and weed size (young weeds) or growth stage. Treatments are rated only for control of vegetation existing at the time of application.
Weed Control Rating
- 10 = 95–100%
- 9 = 85–95%
- 8 = 75–85%
- 7 = 65–75%
- 6 = 55–65%
- N = less than 55% or no control
| Weed | Herbicide | ||||
|---|---|---|---|---|---|
| Clarity / Banvel | Gramoxone | Harmony Extra (fall-applied) |
Roundup / glyphosate (fall-applied) |
Roundup / glyphosate (spring-applied) |
|
| Alfalfa sod | 8 | N | N | 8+ | 7 |
| Smartweed | 9 | 7 | 9 | 7 | 7 |
| Bromegrass or quackgrass sod | N | 6 | N | 9 | 7 |
| Thistle, Canada | 8 | 6 | 7 | 9 | 7 |
| Chickweed, common | 7 | 8+ | 9 | 9 | 9 |
| Ragweed, common | 9 | 8 | 6 | 9 | 9 |
| Dandelion | 7 | N | 6 | 8+ | 6 |
| Foxtail spp. | N | 9 | N | 9 | 9 |
| Hairy vetch | 9 | 7 | 7 | 8 | 6 |
| Hemp dogbane, dewberry, milkweed, etc. | 6 | 6 | N | 8+ | 6 |
| Lambsquarters, common | 9 | 8 | 9 | 9 | 9 |
| Marestail | 8 | 7 | 7 | 9 | 9 |
| Mustard spp. | 9 | 8 | 9 | 9 | 9 |
| Orchardgrass or fescue sod | N | N | N | 9 | 7 |
| Red clover | 9 | 8 | 6 | 8+ | 7 |
| Rye cover, volunteer small grains | N | 9 | N | 10 | 10 |
| Timothy or bluegrass | N | 7 | N | 10 | 10 |