Contrast | Sampling time (days after planting) and differences in the number of D. dipsaci/10 g of fresh tissue between treatments | ||||||
15 | 30 | 45 | 60 | 75 | 90 | 105 | |
Biological vs Physical | 2 | 2 | −20*** | −37*** | −55*** | −65*** | −76*** |
Biological vs Chemical | 5** | 9*** | 4 | 1 | −2 | −2 | −1 |
Biological vs Control | −6** | −24*** | −49*** | −61*** | −72*** | −83*** | −104*** |
Physical vs Chemical | 3 | 8*** | 24*** | 38*** | 52*** | 63*** | 75*** |
Physical vs Control | −8*** | −26*** | −29*** | −24*** | −17*** | −18*** | −27*** |
Chemical vs Control | −11*** | −33*** | −52*** | −62*** | −69*** | −81*** | −103*** |