Table 3.
Concentrations of metalaxyl and its enantiomers as well as the metabolite in the German soil after the respective incubation intervals.
| Fungicide/Day | Mean Concentration (μg/100g of dry soil) | |||
|---|---|---|---|---|
|
| ||||
| Metalaxyl | R-metalaxyl | S-metalaxyl | Acid Metabolite | |
| F-Metalaxyl | ||||
|
| ||||
| 0 | 163 (100%) | 81 (100%) | 81 (100%) | 2.2 (1.3%) |
| 14 | 93 (57%) | 35 (43%) | 58 (71%) | 44 (27%) |
| 30 | 54 (53%) | 12 (15%) | 42 (51%) | 80 (49%) |
| 75 | 4.9 (3.0%) | < 0.05 (<0.05%) | 4.9 (6.1%) | 80 (49%) |
| 90 | 3.7 (2.3%) | < 0.05 (<0.05%) | 3.7 (4.6%) | 71 (44%) |
| 120 | 2.2 (1.4%) | < 0.05 (<0.05%) | 2.2 (2.7%) | 50 (31%) |
|
| ||||
| P-Metalaxyl | ||||
|
| ||||
| 0 | 160 (100%) | 81 (100%) | 81 (100%) | 0.9 (0.55%) |
| 14 | 97 (60%) | 36 (45%) | 61 (75%) | 47 (29%) |
| 30 | 60 (37%) | 15 (18%) | 45 (56%) | 93 (57%) |
| 75 | 5.3 (3.3 %) | < 0.05 (<0.05%) | 5.3 (6.6%) | 86 (53%) |
| 90 | 4.0 (2.4 %) | < 0.05 (<0.05%) | 4.0 (4.9%) | 80 (49%) |
| 120 | 2.0 (1.2%) | < 0.05 (<0.05%) | 2.0 (2.5%) | 51 (32%) |
|
| ||||
| Mefenoxam | ||||
|
| ||||
| 0 | 81 (100) | 2.01 (2.5%) | ||
| 14 | 29 (36) | 31 (38%) | ||
| 30 | 13 (16) | 53 (65%) | ||
| 75 | 1.3 (1.7) | 61 (75%) | ||
| 90 | 1.3 (1.7) | 72 (89%) | ||
| 120 | 0.60 (0.73) | 55 (67) | ||