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| Pre-applicationa % cover, 6 April 2001 | Post-application % cover, 17 April 2001 | |||||
| Treatment | Italian Ryegrass | Hairy Vetch | Crimson clover | Italian ryegrass | Hairy vetch | Crimson clover | |
| Italian ryegrass |
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| Untreated | 93.9a | NPb | NP | 97.5a | NP | NP | |
| Treated | 97.5a | NP | NP | 99.5a | NP | NP | |
| Hairy vetch |
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| Untreated | 8.0dd | 82.0a | NP | 8.8dd | 82.8a | NP | |
| Treated | NP | 87.5a | NP | 3.0dd | 6.3c | NP | |
| Crimson clover |
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| Untreated | 0.5dd | NP | 30.7a | NP | NP | 39.8a | |
| Treated | 0.6dd | NP | 19.5b | 1.0d | NP | 15.3b | |
| Italian ryegrass/hairy vetch mix |
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| Untreated | 33.8c | 60.8b | NP | 43.5c | 54.5b | NP | |
| Treated | 40.8c | 56.0b | NP | 65.0b | 15.9c | NP | |
| Ryegrass/clover mix |
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| Untreated | 60.8b | NP | 11.5bc | 73.0b | NP | 11.0bc | |
| Treated | 42.3c | NP | 7.9c | 69.3b | NP | 2.0c | |
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| F(9,27) | 96.0 | 120.6 | 13.8 | 104.6 | 64.8 | 9.0 | |
| PF | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 | |
| LSD (0.05) | 11.0 | 10.0 | 8.4 | 11.4 | 10.5 | 12.4 | |
| Interaction PF | 0.017 | 0.7 | 0.26 | 0.014 | <0.0001 | 0.031 | |